What Is Ram Smart Exhaust Braking on 6.7L Cummins Turbo Diesel Models? When you are towing a 16,000-pound livestock trailer or a heavy fifth-wheel camper down steep, rolling grade shifts in central Kansas, keeping control without overheating your vehicle's service brakes is paramount. Ram Heavy Duty trucks equipped with the legendary 6.7L Cummins Turbo Diesel engine feature an advanced technology designed specifically for this challenge: Ram Smart Exhaust Braking. To get a deep technical breakdown and practical advice on operating this system, we sat down with Mike Hogg, Service Director at Valor CDJR in Junction City, Kansas. With over 20 years of hands-on experience servicing heavy-duty Chrysler, Dodge, Jeep, and Ram powertrain systems, Mike brings invaluable expertise to truck owners navigating highway grades across Riley County and beyond. Interviewer: Mike, to start off with the bottom line: how would you summarize Ram Smart Exhaust Braking for a driver who is new to the 6.7L Cummins Turbo Diesel platform? Mike Hogg: At its core, Ram Smart Exhaust Braking is an intelligent electronic engine braking feature that utilizes the Cummins engine's Variable Geometry Turbocharger (VGT) to restrict exhaust gas flow out of the manifold. By restricting that flow, it creates backpressure in the engine cylinder during exhaust strokes. That backpressure acts like a natural retarding force against the pistons, smoothly slowing down the vehicle without relying heavily on your traditional mechanical service brakes. What makes the 'Smart' setting unique compared to a traditional mechanical Jake brake or older exhaust brakes is that it actively senses pedal position and vehicle momentum to hold a steady downhill speed automatically. Q: How Does Ram Smart Exhaust Braking Work on Flint Hills Grade Downhills? Interviewer: Drivers around Junction City, Manhattan, and along I-70 know how quickly the Flint Hills topography can stress a brake system, especially when pulling heavy equipment. How does this system handle those specific downhill stretches? Mike Hogg: That is where the engineering really shines. When you are pulling a heavy load down a steep incline like the grades along K-18 or I-70 through the Flint Hills, gravity is constantly trying to accelerate your vehicle rig. If you rely solely on friction brakes—your foot pedal pushing pads against rotors—those brakes quickly generate extreme friction heat. That leads to brake fade, where the pads lose their effectiveness, and in severe cases, rotor warping or complete fluid boiling. When you engage Smart Exhaust Braking on your 6.7L Cummins, an electronic actuator swivels internal sliding nozzles inside the variable-geometry turbocharger into a closed restriction position. This creates measurable retarding horsepower inside the engine cylinder block. Mike Hogg (continued): In Smart mode, if you gently apply the foot brake to bring your speed down from 65 mph to 55 mph while descending a 6% grade and then release the brake pedal, the Cummins VGT system locks on to 55 mph. It modulates backpressure smoothly to maintain that precise speed without requiring you to ride the brake pedal. It keeps your service brakes cool, completely fresh, and ready in reserve in case of emergency stops. Q: What Is the Difference Between Full Exhaust Braking and Smart Exhaust Braking? Interviewer: On the Ram instrument cluster, owners can toggle between Full Exhaust Braking, Smart (Auto) Exhaust Braking, and Off. What is the operational distinction between Full and Smart modes? Mike Hogg: It comes down to aggressiveness versus variable cruise-like speed holding. • Full Exhaust Braking (Yellow Icon): The instant you lift completely off the accelerator pedal, the VGT sliding nozzle closes to maximum restriction. It delivers 100% available backpressure deceleration immediately. This is ideal when descending extremely steep mountain passes or carrying maximum payload ratings where you want instant, maximum slowing power the second your foot leaves the gas pedal. • Smart Exhaust Braking (Green Auto Icon): In Smart mode, the engine computer monitors your braking inputs. It measures how fast the vehicle is accelerating or decelerating. Rather than slamming on full exhaust backpressure, it dynamically varies nozzle restriction to hold whatever vehicle speed you set when you let off the brakes. It creates a smooth, continuous downhill descent that significantly reduces driver fatigue during long trips across Kansas highways. Exhaust Brake Feature Full Exhaust Brake Mode Smart / Auto Exhaust Brake Mode Dashboard Indicator Yellow Engine Brake Icon Green 'Auto' Engine Brake Icon Activation Trigger Immediate upon zero accelerator pedal input Initiated when driver presses service brake to set target speed Backpressure Modulation Maximum available retarding power immediately Variable VGT modulation to lock and hold target mph Primary Driving Application Extreme steep grades, maximum payload, heavy descent Highway towing, rolling hills, varying traffic flows Q: How Long Do OEM Mopar Brake Pads Usually Last on Ram Turbo Diesels? Interviewer: Mike, friction brake pad wear is a major cost factor for heavy truck owners. How much difference does consistent exhaust brake usage make on pad longevity? Mike Hogg: The difference is night and day. On heavy-duty Ram 2500 and 3500 trucks where drivers never use their exhaust brake, we frequently see original front friction pads wearing down to 3mm or less in 25,000 to 30,000 miles, especially if they tow heavy trailers. Mike Hogg (continued): Conversely, drivers who keep their Smart Exhaust Brake engaged consistently can easily extract 50,000, 70,000, or even 80,000+ miles out of a set of genuine OEM Mopar brake pads. The engine performs 60% to 80% of the stopping duty during typical highway descents. Mopar Brake Compounds: Genuine Mopar heavy-duty brake pads available at Valor CDJR feature specific semi-metallic and ceramic-blend compounds engineered precisely for high thermal transfer and low rotor wear. Keeping original equipment Mopar components on your Cummins ensures seamless integration with factory anti-lock braking (ABS) and electronic stability control systems. Schedule Heavy-Duty Brake Inspection Q: What Are the Warning Signs That a CDJR Vehicle Needs New Brake Pads? Interviewer: Even with active Smart Exhaust Braking, friction pads eventually wear down. What physical and sensory indicators tell a Ram or CDJR vehicle owner that service is required? Mike Hogg: Heavy-duty truck stopping systems communicate wear through clear physical symptoms. Recognizing these early prevents costly damage to brake rotors and calipers: 1. High-Pitched Acoustic Wear Squeal: Mopar brake pads include mechanical metal wear tabs. When pad friction material wears down to approximately 2mm to 3mm, these tabs contact the rotor, creating a persistent metallic squeal under mild braking. 2. Brake Pedal Vibration or Pulsation: If you feel a rhythmic thumping or vibration through the brake pedal or steering wheel while slowing, it indicates thermal warping or uneven friction material transfer across the rotors. 3. Deep Metallic Grinding Noise: A harsh grinding sound means friction material is completely depleted, and the metal backing plate is cutting directly into the rotor surface. Immediate service is required to prevent caliper damage. 4. Spongy Brake Pedal or Extended Travel: A pedal that feels mushy or sinks close to the floorboard can signal air in hydraulic brake lines, low fluid levels, or extreme pad wear. 5. Dashboard Brake Warning Lights: If your instrument panel illuminates the ABS light, electronic brake control light, or red brake fluid warning light, bring your truck in right away. You can also Call us at (785) 238-5114 to consult directly with our service team at Valor CDJR. Q: How Does Ram Smart Exhaust Braking Compare to Jeep Max Regeneration Mode? Interviewer: We often hear drivers ask about how different CDJR vehicles preserve friction brakes. What is Jeep Max Regeneration mode, and how does mechanical exhaust braking compare to high-voltage electric regeneration on plug-in hybrids like the Wrangler or Grand Cherokee 4xe? Mike Hogg: That is a great comparison because while the underlying engineering technologies are completely different, their primary goal—reducing friction brake wear while maintaining precise speed control—is identical. Mike Hogg (continued): On a Ram 6.7L Cummins Turbo Diesel, braking force is purely mechanical and pneumatic. The VGT turbo nozzle restricts exhaust gas, turning the diesel engine into an air compressor that physically holds back a 20,000+ lb combined weight rig. In contrast, Jeep 4xe Max Regeneration mode uses high-voltage electric generator-motors. When you lift off the accelerator pedal in a Jeep Wrangler 4xe or Grand Cherokee 4xe, the electric traction motor reverses function, turning vehicle kinetic energy into electrical current fed back into the 17.3 kWh lithium-ion battery pack. Both systems vastly extend friction pad lifespan, but Ram uses compressed exhaust backpressure while Jeep uses electromagnetic force. Q: Does Mopar Vehicle Protection Include Brake Wear-and-Tear Coverage? Interviewer: Many buyers ask about warranty coverage. Does Mopar Vehicle Protection cover brake components and turbo exhaust brake hardware? Mike Hogg: It is crucial to distinguish between mechanical powertrain components and consumable wear items. Factory warranties and extended Mopar Vehicle Protection (MVP) plans offer robust protection, but they apply differently. Turbo Actuator & Mechanical Components: The variable geometry turbocharger assembly, electronic VGT actuator, exhaust valve hardware, and control modules are fully covered under Cummins Powertrain warranties and MVP Maximum Care plans. If the VGT actuator fails or sticks, replacement is covered under warranty guidelines. Friction Wear Items & Maintenance: Standard brake pads, rotors, and shoes are categorized as wear-and-tear friction components. Unless covered under specific Mopar Service Contracts or initial delivery adjustments (such as 12-month/12,000-mile basic coverage), routine pad replacements are customer maintenance. You can order original factory replacement parts through our Parts Department. Explore OEM Mopar Parts & Coverage Q: What Diesel Service Prevents VGT Turbo Soot Accumulation and Actuator Failure? Interviewer: Mike, because Ram Smart Exhaust Braking relies directly on the variable geometry turbocharger's moving internal nozzle mechanism, soot and carbon buildup can present a challenge over time. What maintenance routines prevent VGT sticking? Mike Hogg: That is one of the most important operational points for any 6.7L Cummins diesel owner. Soot is an inherent byproduct of diesel combustion. If a truck undergoes excessive short city trips or prolonged idling without reaching full operating temperature, unburned soot deposits on the sliding VGT nozzle ring. Mike Hogg's Top Maintenance Practices for VGT Longevity: 1. Run the Exhaust Brake Regularly: Turn your Smart Exhaust Brake on frequently, even when driving unloaded around Junction City and Manhattan. Cycling the nozzle sliding mechanism prevents soot from caking and binding the mechanical linkages. 2. Avoid Prolonged Excessive Idling: Idling cools down combustion chambers, leading to incomplete combustion and heavy soot loading inside the turbo charger manifold. 3. Strict Fuel & Oil Maintenance: Change your engine oil and fuel filters at recommended Mopar factory intervals. Clean oil prevents thermal coking inside the liquid-cooled VGT center housing bearings. 4. Perform Highway Drive Cycles: Ensure your truck experiences periodic extended highway drives under load to allow active Diesel Particulate Filter (DPF) regeneration and naturally burn off carbon deposits. Q: Are CDJR Brake Service Coupons and Specials Available Near Junction City? Interviewer: What seasonal offers or service specials does Valor CDJR offer local drivers seeking maintenance for their heavy-duty braking systems? Mike Hogg: We regularly update our service incentives to keep premium factory maintenance affordable. Fall is an especially critical season to inspect heavy-duty brake systems before winter frost and towing demands arrive. Our seasonal promotions often include: • Mopar OEM brake pad replacement offers across front and rear axles • Brake rotor resurfacing and precision machining packages • Full multi-point brake system inspections including brake line hydraulic pressure checks • Heavy-duty Cummins diesel maintenance packages (fuel filters, oil service, DPF check) Fast Service Options: For routine maintenance, fluid checks, or initial brake pad wear thickness measurements, drivers can take advantage of our Express Lane service for fast turnarounds without requiring a lengthy appointment. Whether you need a quick pad thickness check or complete heavy-duty rotor replacement, our certified technicians ensure your truck stops safely every time. Q: Where Can I Get CDJR Brake Service in Junction City, Kansas? State-of-the-Art Facility: Valor CDJR operates a modern service center equipped with high-capacity heavy-duty lifts specifically engineered to accommodate Ram 2500, 3500, 4500, and 5500 chassis cabs and commercial vehicles. Cummins Certified Techs: Our factory-trained service team is lead by Service Director Mike Hogg (20 years experience), ensuring expert diagnostic accuracy for VGT exhaust braking systems and Cummins diesels. Location & Directions: Conveniently located at 1825 Goldenbelt Blvd, Junction City, KS 66441. Get Directions to Valor CDJR for expert heavy-duty diesel and brake service. Book Appointment via Service Scheduler Expert Summary: Maximizing Towing Safety and Brake Life with Ram Smart Exhaust Braking Mike Hogg's Final Takeaway: Ram Smart Exhaust Braking is one of the standard-setting innovations for heavy-duty towing safety. By understanding how to activate Smart mode, using it consistently during daily driving to keep the VGT turbo mechanism clear of soot, and replacing worn components with genuine OEM Mopar brake friction parts, you maximize both vehicle safety and long-term ownership value. Whether you are upgrading your truck from our New Vehicle Listings, looking for a pre-owned HD diesel in our Used Vehicle Listings, or evaluating commercial options in our Commercial Vehicle Inventory, our team is dedicated to supporting your towing needs across Kansas. Schedule Your Ram Turbo Diesel Service at Valor CDJR Today Ready to experience peak stopping performance and ensure your 6.7L Cummins Turbo Diesel is operating flawlessly? Trust the experts at Valor CDJR. You can evaluate your vehicle value with our Trade In Evaluation tool, contact the dealership for current financing information, or book your next service directly through our Service Scheduler. Visit us at 1825 Goldenbelt Blvd, Junction City, KS 66441 or Call us at (785) 238-5114 today! Schedule Service Now

What Car Buying Discounts Can Active Duty Service Members Claim? Active duty service members can claim a $500 Military Bonus Cash allowance on select eligible Chrysler, Dodge, Jeep, and Ram vehicles through the Stellantis US Military Program. This incentive applies to active duty personnel, active reserves, retirees, and honorably discharged veterans within 12 months of service. The bonus cash can be combined with national consumer rebates, regional factory cash allowances, lease incentives, and current financing options offered through Chrysler Capital to review current incentives on a new vehicle purchase. Eligible military personnel purchasing or leasing a qualified vehicle can also take advantage of connected-services discounts. Stellantis offers a 12-month package for the price of 10 on select annual assistance and navigation plans, enhancing on-road security during long highway travel or routine relocations. Additionally, nonresident service members stationed in Kansas may qualify for state motor-vehicle property tax exemptions, significantly lowering ownership costs over the lifecycle of the vehicle. Our team works directly with military personnel stationed near Fort Riley to ensure every available discount and incentive is applied before signing. Whether selecting a heavy-duty pickup with high payload strength or a comfortable family SUV equipped with advanced safety tech, active duty buyers receive full support navigating incentive programs. You can confirm current program compatibility or discuss vehicle options by giving our sales staff a quick call at (785) 238-5114 or visiting our Junction City showroom location. Table of Contents How Do You Verify Eligibility and Combine Military Bonus Cash Offers? Can You Buy Remotely Before Arrival and Claim Kansas Tax Exemptions? How Does Trading In a Vehicle Work Alongside Military Discount Programs? What Is the Difference in Output Between Ram 1500 Hurricane Engines? What Is the Crawl Ratio and Transfer Case Setup on the 2027 Jeep Wrangler Rubicon? Frequently Asked Questions About Military Vehicle Purchases at Valor CDJR How Do You Verify Eligibility and Combine Military Bonus Cash Offers? Military eligibility for Stellantis bonus cash is verified by presenting an active duty military ID, DD Form 214, Leave and Earnings Statement (LES), or official retirement certificate. Spouses and surviving spouses residing in the same household also qualify for the discount. Once verified, the $500 Military Bonus Cash stacks directly on top of standard retail rebates, promotional APR financing, and special lease cash. Combining offers requires proper documentation and program matching during the financing process. The incentive acts as a direct cash allowance toward the down payment or cap cost reduction, reducing the total amount financed. Buyers can combine this program with regional promotional offers, trade-in allowances, and special financing terms customized to fit individual budget requirements. Verification documents required at the time of purchase include: Active Duty Military ID or Reserve ID card DD Form 214 (Certificate of Release or Discharge from Active Duty) Recent Leave and Earnings Statement (LES) Official military retirement certificate or 100% disability documentation Our finance department reviews all documentation upfront to ensure seamless compliance with manufacturer audit standards. While the military bonus cash applies primarily to new vehicle purchases and leases, shoppers looking for pre-owned options can explore our quality pre-owned vehicle inventory to find capable cars, trucks, and SUVs that fit their budget. Can You Buy Remotely Before Arrival and Claim Kansas Tax Exemptions? Service members can complete the entire vehicle purchase remotely prior to relocating by submitting digital credit applications, completing trade-in evaluations, and signing finance paperwork online. Nonresident military personnel stationed in Kansas can apply for a motor-vehicle property tax exemption by submitting Form TR-601 along with active military orders and a current Leave and Earnings Statement. Remote buying streamlines the relocation process by allowing buyers to select a vehicle and finalize transaction terms weeks before arriving at their new duty station. Vehicles can be fully prepped, detailed, and held at the dealership, allowing service members to drive off the lot immediately upon arrival without spending valuable leave time negotiating terms. The Kansas motor-vehicle property tax exemption offers significant financial relief for active duty members who maintain legal residence in another state. To claim the exemption, service members complete Form TR-601 (Military Personnel Affidavit for Motor Vehicle Tax Exemption) and provide supporting military documentation to the county treasurer. Kansas law generally requires vehicle titling and registration within 60 days of purchase, making early paperwork coordination essential. Buyers can initiate the purchase process early by completing our secure online credit pre-approval application and assessing their current vehicle using our online trade-in valuation tool. How Does Trading In a Vehicle Work Alongside Military Discount Programs? Trading in a vehicle reduces the overall purchase price and taxable amount on a new contract without affecting eligibility for military bonus cash programs. Dealerships apply trade-in equity directly to the transaction, allowing service members to stack trade value, military discounts, and standard factory incentives into a single financing agreement. During permanent change of station moves, trading in a vehicle locally eliminates the hassle and expense of shipping or towing an extra vehicle across the country. The appraisal process accounts for current market value, vehicle condition, and existing loan balances. If a trade-in has remaining debt, the finance team contacts the lender for a payoff quote and rolls any remaining equity or balance directly into the new contract. To ensure a smooth trade-in transaction alongside military incentives, buyers should bring: Current vehicle title or lienholder account information and payoff details Valid state vehicle registration All sets of keys, key fobs, and owner manuals Proof of active auto insurance policy This combination of trade credit and military savings applies to the entire lineup, including work trucks and haulers. Service members operating small businesses or managing heavy-duty transport needs can explore our new commercial inventory to find high-capacity trucks with exceptional payload strength and best-in-class towing capabilities. What Is the Difference in Output Between Ram 1500 Hurricane Engines? The 3.0L Hurricane Standard Output engine produces 420 hp and 469 lb-ft of torque, while the 3.0L Hurricane High Output engine generates 540 hp and 521 lb-ft of torque. Both twin-turbocharged inline-six engines deliver higher horsepower and torque output than outgoing V8 powertrains while improving overall fuel efficiency and towing performance across the Ram 1500 lineup. Engine output specifications for the twin-turbo Hurricane lineup include: 3.0L Hurricane Standard Output: 420 hp at 5,200 rpm and 469 lb-ft of torque at 3,500 rpm 3.0L Hurricane High Output: 540 hp at 5,700 rpm and 521 lb-ft of torque at 3,500 rpm Both engines feature forged steel crankshafts, plasma-transferred wire arc cylinder coatings, and dual overhead camshafts with variable valve timing. The High Output variant utilizes forged aluminum pistons, higher boost pressure from dual turbochargers, and upgraded fuel injection systems to deliver relentless power for heavy towing and dynamic highway acceleration. Beyond engine output, the Ram 1500 stands out for exceptional cabin refinement. Engineered with active noise cancellation technology and acoustic laminated glass, the truck offers one of the quietest interior cabins among full-size pickups. This combination of performance power and low interior sound levels provides a smooth, relaxed ride during long highway drives across the Flint Hills corridor toward Manhattan. What Is the Crawl Ratio and Transfer Case Setup on the 2027 Jeep Wrangler Rubicon? The 2027 Jeep Wrangler Rubicon features the Rock-Trac 4x4 system equipped with a heavy-duty two-speed transfer case and a 4:1 low-range gear ratio. When paired with the six-speed manual transmission, this transfer case setup delivers an extreme 100:1 crawl ratio for precise, controlled low-speed navigation over severe off-road obstacles. The mechanical crawl ratio is calculated by multiplying the transmission first-gear ratio, transfer case low-range ratio, and axle differential ratio. On Rubicon models equipped with the eight-speed automatic transmission, the system yields a 77:1 crawl ratio, supplying massive torque multiplication directly to the wheels at crawling speeds. Key off-road drivetrain components on the Jeep Wrangler Rubicon include: Rock-Trac 4x4 system with part-time or available full-time two-speed transfer case 4:1 low-range gear ratio for ultimate low-speed wheel torque Tru-Lok electronic front and rear locking differentials Electronic front sway bar disconnect for maximum axle articulation Heavy-duty Dana 44 front and rear solid axles with a 4.10 axle ratio This setup delivers strong off-road capability, allowing all four wheels to maintain traction over loose rock, deep mud, and steep inclines. Coupled with generous ground clearance and heavy-duty skid plates, the Wrangler Rubicon provides ultimate off-road confidence for outdoor weekend adventures. Frequently Asked Questions About Military Vehicle Purchases at Valor CDJR Q: Can surviving spouses claim the military bonus cash on a new Chrysler, Dodge, Jeep, or Ram vehicle? Surviving spouses of eligible active duty or retired military personnel who reside in the same household qualify for the $500 Military Bonus Cash allowance. Verification requires presenting official military casualty documentation, dependency records, or surviving spouse identification along with proof of current household residence at the time of purchase. Q: What specific documents should service members bring to the dealership on delivery day? Service members should bring a valid driver's license, active duty military ID or DD Form 214, a recent Leave and Earnings Statement (LES), current auto insurance documentation, and military orders if applying for state tax exemptions. If trading in a vehicle, bring the title or payoff information and all vehicle keys. Q: How long does Kansas give out-of-state military members to register a newly purchased vehicle? Kansas law requires vehicle titling and registration within 60 days of purchase. Nonresident active duty service members stationed in Kansas can complete registration through the local county treasurer's office using state tax exemption forms to maintain legal residence in their home state without paying Kansas motor-vehicle property taxes. Q: Is the military bonus cash restricted to specific vehicle trims or body styles? The military cash allowance applies to most new Chrysler, Dodge, Jeep, and Ram models across various trim levels. Certain limited-production performance models may be excluded under annual program guidelines, so confirming specific model eligibility with our sales staff prior to purchase is recommended. Q: Can digital pre-approval lock in vehicle pricing before arriving at Fort Riley? Completing an online finance pre-approval allows our team to structure purchase terms, verify military program compatibility, and review current pricing before you arrive. This ensures your vehicle selection, trade credit, and financing are finalized so you can take delivery immediately upon arriving at your new station. Our sales and finance specialists are dedicated to making vehicle buying straightforward and stress-free for military service members and their families. To explore current available inventory, calculate payments, or arrange a test drive, visit directions to our dealership, contact our team directly at (785) 238-5114, or browse our latest new vehicle inventory online today. Keep Your Vehicle Running Strong Keep your vehicle performing at its best with our service team: Parts Department Service Scheduler © 2026 Valor CDJR. All rights reserved.

Which Jeep Models Come Equipped with the Selec-Terrain System? When navigating unpredictable weather in Junction City, Kansas—from sudden ice storms on Interstate 70 to deep mud across unpaved Flint Hills backroads—having precision vehicle control is essential. The Jeep Selec-Terrain® Traction Management System is designed to provide optimal grip by allowing drivers to easily dial in tailored performance settings for diverse surface conditions. The Selec-Terrain system is available across a broad spectrum of the Jeep lineup, including the Grand Cherokee, Wagoneer, Grand Wagoneer, Compass, Cherokee, and Renegade. Depending on the model and trim level, Selec-Terrain comes either standard with 4x4 drivetrain configurations or as part of specialized off-road packages such as Trailhawk and Quadra-Trac II. The system electronically coordinates up to 12 vital vehicle subsystems—including the Powertrain Control Module (PCM), Transmission Control Module (TCM), Electronic Stability Control (ESC), Antilock Braking System (ABS), electronic transfer case torque distribution, and throttle response mapping. Jeep Model Selec-Terrain Availability Drivetrain Integration Target Surface Capability Jeep Grand Cherokee Standard on 4x4 Trims (Limited, Overland, Summit, Trailhawk 4xe) Quadra-Trac II / Quadra-Drive II 4WD Snow, Sand/Mud, Sport, Rock (Trailhawk/Overland) Wagoneer & Grand Wagoneer Standard on 4x4 Trims (Series I, II, III) Quadra-Trac II Active 4WD / Quadra-Drive II Snow, Sand/Mud, Sport, Rock Jeep Compass Standard on 4x4 (Limited, Latitude Lux, Trailhawk) Jeep Active Drive / Active Drive Low Auto, Snow, Sand/Mud, Rock (Trailhawk) Jeep Cherokee (Legacy) Standard on 4x4 Trims (Latitude Plus, Trailhawk) Active Drive I / Active Drive II / Active Drive Lock Auto, Snow, Sport, Sand/Mud, Rock Jeep Renegade (Legacy) Standard on Trailhawk & 4x4 Packages Jeep Active Drive Low 4x4 Auto, Snow, Sand, Mud, Rock Meet Mike Hogg: 20 Years of Master Tech Insight at Valor CDJR in Junction City To get a deep technical understanding of how Selec-Terrain works in real-world conditions and how Kansas drivers should prepare their vehicles for freezing temperatures, we sat down with Mike Hogg, Service Director at Valor CDJR in Junction City, KS. With 20 years of hands-on experience servicing Chrysler, Dodge, Jeep, and Ram vehicles throughout Geary and Riley counties, Mike has seen virtually every mechanical challenge caused by Great Plains weather. From sub-zero cold snaps near Fort Riley to slick slush on Highway 77, Mike offers practical knowledge on 4x4 transfer cases, winter tire compounds, and cooling system maintenance. Q: Which specific Jeep models and trim levels include Selec-Terrain as standard or available equipment? Interviewer: Mike, we get a lot of customers asking which Jeep models offer Selec-Terrain and whether it's standard or optional across the lineup. Can you break down how it distributes across trim levels? Mike Hogg: Absolutely. It really comes down to how the vehicle's 4x4 system is configured from the factory. On the flagship Jeep Grand Cherokee, Selec-Terrain comes standard on all 4x4 trims starting from the Limited up through the Overland, Summit, Summit Reserve, and the 4xe Trailhawk plug-in hybrid. On models equipped with Quadra-Trac II or Quadra-Drive II, the control dial sits right in the center console. On full-size luxury models like the Wagoneer and Grand Wagoneer, Selec-Terrain is standard across 4x4 configurations, integrated directly with Quadra-Lift air suspension. For compact SUV buyers looking at the Jeep Compass, Selec-Terrain comes standard on all 4x4 trims such as Latitude Lux, Limited, and Trailhawk. If you're looking for pre-owned inventory, classic models like the Cherokee 4x4 (Trailhawk, Active Drive II) and Renegade 4x4 also carry Selec-Terrain dials. You can check our New Vehicle Listings or explore Used Vehicle Listings to see exact trim availability on our lot today. Q: How do Auto, Sport, Snow, Sand/Mud, and Rock modes dynamically calibrate engine and drivetrain performance? Auto & Sport Modes Auto Mode is your daily driver setting. It operates with a front/rear torque bias that automatically disconnects the front axle when full 4WD isn't needed, saving fuel. If rear wheel slip occurs, it engages the transfer case clutch in milliseconds. Sport Mode alters transmission shift schedules to hold gears longer, sharpens electronic throttle response, and directs up to 80% of torque to the rear axle for dynamic dry-pavement handling. Snow & Sand/Mud Modes Snow Mode sets a 50/50 static torque distribution, forces second-gear launches to prevent initial tire spin, and softens throttle sensitivity so small pedal inputs don't break traction. Sand/Mud Mode allows increased wheel spin to clear tread voids, aggressively delays upshifts, and allows maximum torque delivery to break through heavy mud or loose sand without power cutting. Rock Mode Rock Mode requires shifting into 4WD Low range (4LO). It calibrates the transfer case, Electronic Limited-Slip Differential (eLSD), and ABS Brake Lock Differential (BLD) for maximum slow-speed crawling. It applies precise selective braking to spinning wheels, sending torque directly to wheels with firm mechanical traction over steep boulders or technical inclines. Browse New Selec-Terrain Models Q: How does Jeep Selec-Terrain Snow Mode adjust performance for Kansas winter driving around Junction City and Manhattan? Interviewer: Mike, Kansas winters around Junction City and Manhattan can bring sudden freezing rain and blowing snow across the Flint Hills. How specifically does Snow Mode help drivers navigate these local conditions? Mike Hogg: Kansas winter driving is tricky because conditions change rapidly. You can start off on slushy wet pavement on I-70, hit black ice on the bridges over the Kansas River, and then turn onto hard-packed snow on rural county roads. When you turn the dial to Snow Mode, three key mechanical changes happen instantly: 1. 2nd-Gear Transmission Launch: The automatic transmission bypasses first gear entirely when accelerating from a dead stop. First gear produces high low-end torque that easily breaks tire friction on slick surfaces. Launching in second gear smoothes power delivery. 2. 50/50 Locked Torque Distribution: The active transfer case pre-emptively clamps its internal clutch pack to split torque evenly (50% front, 50% rear). It doesn't wait for traction loss to react—it stays engaged. 3. Adjusted ABS & Traction Control Calibration: The ABS system modifies pulse frequencies to prevent wheel lockup without digging deep grooves into ice, while Electronic Stability Control reduces engine torque cut thresholds so you don't stall out when pushing through slush banks. Q: Are 3PMSF-rated all-terrain tires as effective on black ice as dedicated studless winter tires? 3PMSF All-Terrain Tires Tires with the Three-Peak Mountain Snowflake (3PMSF) emblem satisfy minimum acceleration standards on packed snow. However, all-terrain rubber compounds are engineered for year-round durability and high heat resistance. Below 45°F, their rubber begins to stiffen, reducing microscopic tread contact on slick black ice. Dedicated Studless Winter Tires Dedicated winter tires utilize specialized hydrophilic silica rubber compounds that remain soft and pliable down to sub-zero temperatures. They feature thousands of 3D micro-sipes that act like tiny suction cups, shearing through thin water films on ice to grip directly onto frozen surface texture. Real-World Stopping Performance On polished black ice at 30 mph, a dedicated winter tire can stop a heavy SUV up to 30 feet shorter than a standard 3PMSF all-terrain tire. While 3PMSF tires excel in deep snow, true winter tires remain unmatched for emergency braking on freeze-thaw ice around Geary County. Q: How many winter seasons do dedicated winter tires typically last on a heavy truck or SUV? Interviewer: Mike, for drivers operating heavy vehicles like a Ram 1500 or Jeep Grand Cherokee L, how long can they expect dedicated winter tires to last? Mike Hogg: On average, a quality set of dedicated winter tires lasts between 3 to 5 winter seasons, or roughly 15,000 to 25,000 miles, assuming you change them out promptly when spring temperatures consistently cross above 45°F. Heavy SUVs and 4x4 trucks generate significant friction on dry, warm asphalt. If you leave soft winter tires on during warm spring months, the specialized compound degrades rapidly. Once tread depth drops below 6/32", the ultra-deep siping loses its suction ability on ice. We recommend regular tire rotations every 5,000 miles and storing off-season tires in a cool, dark environment away from sunlight. You can consult our Parts Department for factory-approved winter wheel and tire packages fitted directly for your model. Q: What coolant mixture ratio is required for Ram and Jeep engines during Kansas winters? Interviewer: Engine cooling systems are critical during Kansas winter freezes. What is the precise coolant specification and ratio needed for Ram trucks and Jeep vehicles? Mike Hogg: Modern Ram and Jeep engines rely on Mopar Organic Additive Technology (OAT) coolant (typically purple in color). The baseline standard for Kansas is a 50/50 ratio of pure OAT coolant to distilled water, which protects against freezing down to -34°F. For extreme winter conditions or severe cold snaps in open rural areas, a 60/40 coolant-to-water mix lowers freeze protection down to -60°F. Never exceed 70% concentration, as pure coolant actually freezes at higher temperatures than a proper mix! Using plain tap water causes mineral scale deposits inside aluminum engine blocks, leading to heater core blockage and corrosion. During a pre-winter service at Valor CDJR, our certified technicians test coolant pH and freeze points using calibrated optical refractometers. Schedule Winter Service Online Q: What should a comprehensive pre-winter service inspection cover on a Ram or Jeep in Junction City? 1. Electrical & Battery Health Freezing weather reduces battery chemical reaction speeds, cutting starting power by up to 50%. We conduct conductance and Cold Cranking Amp (CCA) load testing, clean terminal corrosion, and check alternator charging output under load. 2. Drivetrain & Fluid Systems We check front/rear differential gear oil and transfer case fluid for moisture contamination. Brake fluid is moisture-tested to prevent internal hydraulic freeze-up, and OAT coolant levels are verified with optical refractometer testing. 3. Chassis, Wipers & HVAC Inspection of rubber suspension bushings, shocks/struts, winter beam wiper blades, washer fluid pump operation, cabin air filter replacement, and heating/defrosting climate control core output. Q: Is servicing at an authorized Chrysler Dodge Jeep Ram dealer more convenient when bundled? Interviewer: Drivers often debate whether to perform seasonal services piecemeal or get a comprehensive bundle at an authorized dealer. How does dealer servicing save money long-term? Mike Hogg: Preventative bundled maintenance is vastly more convenient than emergency roadside repairs. When you bundle pre-winter checks—like battery testing, 4x4 fluid analysis, and wiper replacement—the labor savings are substantial compared to scheduling separate standalone appointments. Furthermore, at Valor CDJR, our factory-trained technicians utilize OEM Mopar parts backed by a 2-year/unlimited mileage warranty. We connect your vehicle directly to factory diagnostic systems like wiTECH 2.0 to catch flash updates for the PCM and Selec-Terrain control modules that independent shops can't perform. For quick oil changes and routine checks, drivers can also utilize our quick-service Express Lane without needing an appointment. Q: How do Quadra-Lift Air Suspension and Quadra-Trac II work alongside Selec-Terrain in Riley County? Quadra-Trac II 4WD Features a two-speed active transfer case that uses sensors to detect wheel slip before it occurs. When slip is sensed, it instantly routes up to 100% of available engine torque to the axle with the most traction. Quadra-Lift Air Suspension Automatically changes ground clearance based on the Selec-Terrain mode selected. In Rock Mode, it raises ride height up to 10.9 inches to clear deep snow drifts, washed-out ruts, or rocky trails across Riley County. Quadra-Drive II eLSD Integrates an Electronic Limited-Slip Rear Differential (eLSD). It can direct 100% of rear torque to a single rear wheel if the opposite wheel loses traction entirely on black ice or slick mud. Mike Hogg's Final Takeaways for Maintaining Peak 4x4 Capability Year-Round Interviewer: Mike, what are your top closing recommendations for local drivers to keep their Jeep and Ram 4x4 systems running flawlessly through every season? Mike Hogg: My number one piece of advice is: consider testing your 4x4 system before the first snowstorm. Exercise your transfer case and check your drive modes before severe weather hits. Keep these key rules in mind: • Flush Transfer Case Fluid: Change transfer case and differential fluids every 30,000 to 50,000 miles, especially if towing or off-roading. • Monitor Tire Pressure (TPMS): Ambient temperature drops lower tire pressure by 1 PSI for every 10°F temperature drop. Keep tires properly inflated for consistent Selec-Terrain sensor performance. • Trust Certified Mopar Care: If you're considering trading up or upgrading your winter vehicle, explore your trade value with our Trade In Evaluation tool, or speak with our team about financing information at Get Pre-Approved. Schedule Your Winter Maintenance or Test Drive a Selec-Terrain Equipped Jeep at Valor CDJR Today Whether you're looking to upgrade to a new Selec-Terrain equipped Jeep Grand Cherokee, Wagoneer, or Compass, or you need expert pre-winter maintenance on your current Ram or Jeep 4x4, the experienced service team at Valor CDJR is ready to help. Visit our dealership at 1825 Goldenbelt Blvd, Junction City, KS 66441, Call us at (785) 238-5114, or click below to reserve your service inspection online. Schedule Pre-Winter Inspection Now