2020 RAM 1500 Problems: 20 Known Issues

How to Fix

Have a qualified Ram technician verify the VIN and diagnose the documented charging/stall concern using bulletin 08-014-21. Record and repair other DTCs or symptoms first. For a qualified vehicle the procedure replaces the MGU (historical part 68438054AC; confirm current supersession and fitment), then clears DTCs. Merely reseating the connector or replacing the 48V battery is not the specified bulletin remedy. Separate bearing-noise, belt and battery reports need their own diagnosis and source scope. Do not deliberately reproduce a stall on the road; follow the prescribed electrical isolation and service procedure.

How to Fix

Check the VIN with a Ram dealer or NHTSA recalls. For outstanding 23V059/14A, the remedy is a trailer reverse steering control module software update. For outstanding 22V638/Z86, it is a radio software update to prevent persistent resets. Applicable recall service is free; the listed module and radio numbers identify affected equipment, not a shopping list. Neither report calls for automatic camera, screen or harness replacement. If the truck is outside those recall populations, have the symptom diagnosed separately. Do not back up unless you have independently verified that the path is clear; the illustration is not a driving test.

How to Fix

Perform a Uconnect soft reset (key to RUN, then hold the volume knob and tuner knob together ~10-20 seconds) to clear a frozen screen. Have the dealer install the latest Uconnect software (per TSB 08-003-19) which addresses many freeze/reboot/camera cases. Persistent hardware faults (de-lamination, ghosting, dead camera image) require radio or camera replacement, ideally under the basic (bumper-to-bumper) warranty.

How to Fix

Diagnose with wiTECH to read air suspension fault codes and check height sensor readings. Leak test each air spring with soapy water at all seams and fittings. Ask the dealer to check bulletins S1902000008, S2208000197 and the 0812723 air suspension control module flash against your VIN. Replace leaking air springs ($300-600 each, OEM Mopar 68364461AA for rear). If compressor is burned out, replace with an OEM or quality aftermarket compressor listed for the 2019+ truck ($800-1,500). Some owners convert to traditional coil springs using a conversion kit ($800-1,200 for all four corners) to eliminate the air suspension entirely.

How to Fix

Have a qualified suspension shop or Ram dealer diagnose the warning and check the lines and fittings for leaks before choosing a repair. Compressor replacement was an owner-reported outcome, not a proven cure in every report; do not order an assembly solely because the truck is low. STAR case S1902000008 Rev. A warns technicians to leave the specified plastic fitting on the compressor assembly in place because removing it can cause an internal nitrogen leak. Follow the service procedure for line handling and the diagnosed repair. This STAR note records prior service experience, does not identify the cause on your truck and does not authorize warranty repairs. Do not apply an engine belt-generator replacement to the separate electric suspension system.

How to Fix

Diagnose for air-bag leaks first (soapy-water test on bags/fittings) before condemning the compressor, since a leaking bag is the usual root cause of compressor burnout. Replace leaking air spring(s), then the compressor/dryer assembly if it has failed. On 2023 trucks, apply TSB 08-152-24 (air suspension control module reflash) for false 'stuck sensor' faults; on other years ask the dealer for the current air suspension software update. Some owners convert to a conventional coil-spring kit to eliminate the system. Dealer compressor replacement is often ~$2,500-$3,300; DIY parts can be far less.

How to Fix

If assist is lost, prioritize getting safely stopped and arrange qualified diagnosis rather than deliberately repeating the fault. Have the steering system, electrical supply and connections checked before ordering parts. One owner reports rack-and-pinion replacement after connector corrosion was identified; that is an individual repair outcome, not proof that every warning needs a rack. Repair the diagnosed connection or component according to the vehicle service procedure and verify assist operation. Check outstanding campaigns by VIN separately; do not apply the older DS recall or the unrelated low-speed-right-turn software bulletin solely because this warning appears.

How to Fix

A qualified technician should check for other faults first, then update EPS software under 08-137-21 Rev. B when the symptom and build scope match, and clear reprogramming-related DTCs. Use the specified battery support throughout the flash. The bulletin warns that an aborted or failed flash can leave an unexpected EPS part number that cannot be reflashed and requires EPS replacement; this exception is not a recommendation to replace the rack for every noise complaint. Normal warranty provisions apply.

How to Fix

Arrange prompt cooling-system and transmission diagnosis when fluid contamination is suspected; appearance alone cannot identify which fluid or component is involved. Have a qualified shop identify the leak source and assess both systems for contamination and damage before selecting parts. If an internal heater or cooler leak is confirmed, repair or replace the identified component and follow the vehicle service procedure for the affected fluids and cleanup. Neither a replacement radiator nor a complete transmission is automatically established by these reports. Do not copy another vehicle generation’s contamination remedy or open a hot pressurized reservoir. The reservoir illustration shows the observed symptom, not a failed bottle to buy.

How to Fix

First step: Get latest transmission software update from dealer (often free). Change transmission fluid and filter every 60,000 miles using ZF Lifeguard 8 fluid only. If problems persist, valve body replacement may be needed ($1,500-2,500). Full transmission replacement runs $4,000-6,500.

Owner tips & cautions

• TipDIY repairs can save significantly - dealer charges $1,500-2,500 but DIY costs are typically 50-70% less
• TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
• TipSearch RAM 1500 forums and owner groups for real-world experiences and DIY guides
• TipGet multiple quotes from independent mechanics - dealer prices can be 2-3x higher for the same repair

How to Fix

Have persistent ticking or misfire checked by a qualified engine shop or Ram dealer and distinguish exhaust-manifold noise from an internal valvetrain concern. If inspection confirms cam/lifter damage, repair the diagnosed components and assess whether debris has caused additional damage before choosing the repair scope. Owners describe camshaft/lifter replacement and, in a separate more extensive damage report, engine replacement; neither is the default for every tick, and one repair account remained unresolved. The illustration is not a complete parts kit. Keep maintenance and diagnosis records, confirm current engine-specific parts and warranty terms, and do not infer an MDS-delete, different oil viscosity or universal engine replacement from forum speculation.

How to Fix

Ask a Ram dealer to check VIN eligibility and carry out ZB8 free of charge when outstanding. First check for tonneau-cover, equipment or debris interference and test tailgate operation using the prescribed stationary procedure. If operation is correct, inspection alone completes the repair. If binding remains, adjust both strikers to center them vertically in the latch openings and adjust fore/aft for easy closing; eliminating binding takes priority over panel flushness. For the DT 1500 the procedure specifies 49 N·m (36 ft-lb) striker tightening, followed by repeat operation checks; the 2500/3500 torque differs. No replacement parts are required. Confirm secure latching after closing because a binding tonneau cover can give a false impression that the tailgate is latched. This is dealer recall guidance, not an instruction to drive with the gate unsecured.

How to Fix

Confirm the leak is at the CHMSL and follow bulletin 23-074-23 to replace the complete lamp assembly; the listed bulb-CHMSL assembly is 68298380AH, with current fitment verified by VIN. Ensure the interior is dry before returning the truck. This is not a universal butyl or added-foam repair, and it does not repair a separate rear-window or antenna leak. Check remaining XG1 time/mileage and regional eligibility; do not promise free repair solely from the model year.

How to Fix

Check the upper sliding-window frame corners and confirm the backlite is the leak source, then follow 23-098-23 to replace the qualified backlite assembly. Select the correct manual/power and regional kit by VIN; the North America-only kits and other listed assemblies are alternatives, not interchangeable purchases. The bulletin lists two 04864015AD glass adhesive installation kits and permits equivalent urethane/primer when Mopar materials are unavailable; follow the exact installation procedure and cure requirements. Ensure the interior is dry before returning the vehicle. A bead of sealant over the crack is not the specified repair. Check remaining XL1 time/mileage eligibility rather than promising a free repair from the model year.

How to Fix

Photograph the damage and document any earlier paint, wrap or repair work before altering the surface. Ask a qualified body shop to distinguish coating separation, clear-coat defects and impact chips, then recommend the appropriate localized finish repair or refinishing. The image shows a possible refinished surface, not a required replacement bumper. If seeking coverage, ask a Ram dealer to inspect it before repainting; the reports include disputed causes and do not establish automatic warranty eligibility. Forum suggestions about wet-sanding, ceramic coating or paint-protection film are not a manufacturer-approved cure for the reported damage.

How to Fix

Have the leak source and conditions checked first. For the high-pressure car-wash condition described by STAR S2023000050, the procedure adds secondary seal 68410376AA to the front edge of the rear glass pane; verify current part applicability before ordering. Its notch aligns with the trough bump and its rib seats in the glass-panel groove. The procedure specifies holding the close control during initial closing to prevent auto-reversal, then retesting under the original conditions. If water still enters, continue normal leak diagnosis. This seal will not correct low-pressure water or rain leaks. For a separate buzz/squeak/rattle, STAR S2223000059 calls for inspection of the perimeter mounting-screw torque using the vehicle service procedure, not a guessed torque or automatic sunroof replacement. Neither STAR note authorizes warranty repairs.

How to Fix

Have a qualified shop check latch operation, striker clearance and electrical connections for the exact tailgate equipment. STAR S1823000056 Rev. E describes a striker binding on the top or bottom of the latch opening: when confirmed, center and adjust it using the applicable current service procedure. Its ajar-light test says not to replace a latch if the indication clears; otherwise check the electrical connection, and replace the right latch only if the prescribed test still fails. Do not force a stuck gate or infer a failed solenoid from a click. Separately check VIN eligibility for 22V904/ZB8; its equipment exclusions and DT torque differ from the older STAR note, so use the applicable current procedure rather than mixing them. The 2021 split-gate snippet requires separate diagnosis, and neither owner accounts nor the STAR note promise warranty coverage.

How to Fix

Verify the transfer-case sales code, build date, symptoms and DTCs against 08-144-22. Diagnose other faults first. If only C1403 is present, use normal diagnosis before a flash; the same caution applies to the isolated Service 4WD or dual-blinking-indicator conditions described for 2019–2020. When qualified, reprogram the DTCM with current software using the specified battery support, then clear reprogramming DTCs. This procedure does not prescribe replacement of the shift motor, transfer case or generic module shown. Normal warranty provisions apply.

How to Fix

Photograph the affected area and have a qualified interior-trim shop or Ram dealer assess whether the leather covering has separated or a removable trim panel has lifted. A 2019 owner reports that Ram replaced the dashboard under warranty; another received a quote to replace dash parts. Use replacement trim when the inspection supports it, with exact color, equipment and part fitment confirmed before ordering. These are owner-reported outcomes, not a universal manufacturer procedure or promise of coverage. The separate 2020 lifted-corner thread contains conflicting suggestions about replacement and reshaping; it does not establish that the entire dashboard must be replaced. Do not treat forum glue or heat-gun suggestions as an approved procedure.

How to Fix

Have a qualified HVAC technician read the climate-system codes and verify whether STAR S2124000003 applies. Test the driver blend-door actuator resistance using the pin, temperature and resistance table: replace the actuator if out of specification, then continue the remaining checks. Inspect beneath the HVAC case for water or coolant intrusion; the note also calls for actuator replacement when those marks are found. Inspect the drain with a borescope, clear any blockage and investigate water entry, heater-coolant leaks or misplaced seals. When there is no intrusion evidence, calibrate the actuator and confirm that driver-side temperature changes from cold to hot. A replacement alone did not cure one owner report. This STAR note records service experience and does not authorize warranty repairs; confirm exact replacement fitment when inspection justifies it.