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Service bulletins for the 2020 Ram 4500

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

569 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
S21250000022022-09-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Customer complaint includes a Mil-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:
S1809000007RevC2022-09-26. Service bulletin. ENGINE AND ENGINE COOLING. Customer Complaint May Include Engine Oil Leak Or Consumption
S2008000151RevA2022-09-26. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. Outside Air Temperature Displayed On Cluster Or Radio Are Inaccurate
S2008000059RevB2022-09-26. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. Error Code 20 Message On the Radio Screen
S2008000059RevA2022-09-26. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. Error Code 20 Message On the Radio Screen
S2108000098RevB2022-09-26. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. Radio Screen Freeze, Blank Screen And Reset
90043862022-09-26. Service bulletin. ELECTRICAL SYSTEM:WIRING. WIRING, Body Before replacing this harness, please contact FCA Redacted Content to see if a repair kit is available for your application. If no response in 15 minutes, proceed with repair. Please email pictures of harness defects to FCA Redacted Content
90042542022-09-26. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. INSTRUMENT PANEL, Base Panel (Top Pad, Leather) If you are replacing a leather instrument panel top pad for any leather defects (bubbling, delamination, wrinkling, etc.), please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair. Please send pictures of the leather defect to FCA Redacted Content.
08052212022-09-26. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Flash: Radio Frequency Hub Module (RF-HUB) Updates This bulletin involves reprogramming the RF-HUB with the latest software available. The customer may experience the following:The key fob won't unlock the doors while the vehicle is running and after a remote start.
08061212022-09-26. Service bulletin. LANE DEPARTURE; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE; BACK OVER PREVENTION; TRAILER HITCHES; ELECTRICAL SYSTEM. Flash: Parktronics (PTS) Enhancements This bulletin involves reprogramming the PTS module with the latest software available. Customers may experience one or more of the following:False front object detection warning when a trailer is connected to the vehicle. Chime sounds when backing away from an object in front of the vehicle. Park assist system latches off when a trailer or snow plow is disconnected during the same key cycle. The system disabled message will still be displayed and the system will be turned off until a new key cycle.
18034212022-09-26. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL. P203E and P203F Additional Diagnostic Information This bulletin provides additional information regarding diagnosing Diesel Exhaust Fluid (DEF) issue in extreme cold weather. Diagnostic Trouble Codes (DTCs) P203E - Reductant Level Sensor 1 Circuit Intermittent and/or P203F - Reductant Level Too Low set.
S21080000982022-09-26. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Radio Screen Freeze, Blank Screen And Reset
S21180000052022-09-26. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Malfunction Indicator Lamp (MIL) Illumination. Fuel Injector Circuit Open DTC Additional Diagnostics.
S21240000032022-09-26. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. A/C Performance Not As Hot/Cold On Driver Side - DTC's B11CB-92, B11CB-11
S17080001182022-09-26. Service bulletin. ELECTRICAL SYSTEM. Battery Drain Concern, Dual USB Port Normal Operational Draw, Extended Illumination After Key Off
S19240000192022-09-26. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. Customer Indicates That Temperature Varies From Side To Side Being Colder On One Side Compared To The Other.
S20080001132022-09-26. Service bulletin. ELECTRICAL SYSTEM. No Start Intermittently, Vehicle Requires Multiple Keyless Push To Start Attempts To Start Vehicle, Intermittent Key Not Detected Message
S16080002262022-09-26. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Battery Tester Warranty Code Procedures, Midtronics Charger Update Process
S160800022612022-09-26. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Battery Tester Warranty Code Procedures, Medtronic Update Process
S18210000012022-09-26. Service bulletin. POWER TRAIN. Gear Ratio DTC?s, Transmission Shift Concerns, Does Not Shift At Times, Shudders
S21080000932022-09-26. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Apple CarPlay Does Not Work Or Not Connecting
90043692022-09-26. Service bulletin. ELECTRICAL SYSTEM; BACK OVER PREVENTION. CAMERA (surround view - digital) When vehicle is equipped with surround view system (XAK sales code) and rear camera is not functioning - If rear camera is not functioning we would expect to see these Diagnostic Trouble Code (DTCs) set by the Central Vision Processing Module (CVPM) - B217A-92 Rear Camera-Performance or Incorrect Operation U0264-00 Lost Communication With Camera Module - Rear 1. Take picture of head unit display so we can verify what part of the image is not functioning (Surround View vs. Rearview Camera) 2. Take vehicle scan and config report so we can verify s/w, DTCs, and vehicle config 3. If rear camera is not functioning, disconnect and reconnect the camera to ensure that the same camera is still not functioning. We want to ensure that the connection at the rear camera is secure. 4. Send information to FCA Redacted Content.
90040092022-09-26. Service bulletin. POWER TRAIN. Transmission Kit with Torque Converter 1. All Promaster (VF) 3.6L/62TE equipped vehicles. If the transmission bracket to the transmission case fasteners are removed during servicing, the fasteners (Part Number 06511385A$) are one-time usage. Vehicles built prior to 10/23/2015 requires Service Kit PN 68461214AA; includes Transmission Isolator PN 68264483AA, and Adaptation Bracket 68264479AA and Fastener Service Kit PN 68329056AA Vehicles built after on or after 10/23/2015 will require only the Fastener Service Kit PN 68329056AA. 2. All 3.6L/62TE equipped vehicles. If the vehicle you are repairing has a crack in the flex plate or failed pump bushing inspect and confirm that both (2) dowel pins are present in the engine block, which align the transmission center line to the crank shaft centerline and visually inspect the dowel alignment holes in the transmission case. If the holes are damaged or elongated the transmission should be replaced to prevent further damage to the transmission/flexplate or pump bushing due to the inability to properly align the engine to the transmission during the repair. 3. All 62TE equipped vehicles. If pump bushing is scored or damaged and the dowel pin alignment holes are ok, replace the pump assembly as opposed to complete transmission. 4. All 62TE equipped vehicles. If vehicle is jerking/slipping with MIL code(s) P0740 or P2764, check TCC Solenoid operation. If TCC Solenoid is ok, the codes are indicative of a torque converter failure. Replace the torque converter.
0802921REVA2022-09-26. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY. Door Control Module Window Inoperative This bulletin involves replacing one or both of the door modules. Technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: B18BA-12 - Window Control - Circuit Short to Battery B18BA-13 - Window Control - Circuit Open In addition the customer may notice one or more of the following: Driver and/or passenger windows stop working. If the window switch is held in the up position for at least two seconds,the obstruction auto-down function may not work. Windows may go up slower than expected.
08052212022-09-26. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. Flash: Radio Frequency Hub Module (RF-HUB) Updates This bulletin involves reprogramming the RF-HUB with the latest software available. The customer may experience the following:The key fob won't unlock the doors while the vehicle is running and after a remote start.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.