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Service bulletins for the 2021 Ram 2500

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
S21080001632022-09-26. Service bulletin. ELECTRICAL SYSTEM. No Start, Cannot Complete Module Replace, Proxi Or Module Proxi Configuration
S21090000042022-09-26. Service bulletin. ENGINE AND ENGINE COOLING. Issue involves overheating, running hot, coolant leaks and related symptoms after a Mopar replacement engine has been installed in the vehicle.
S21210000102022-09-26. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. Service 4WD Lamp On, 4WD System Does Not Work, 4WD Service Lamp Flashing, Front Axle Disconnect Does Not Engage Or Disengage
S228A000004RevB2022-09-26. Service bulletin. BACK OVER PREVENTION. Panasonic VP4R Wi-Fi New Enrollment Pause
S228A000009RevA2022-09-26. Service bulletin. EQUIPMENT:ELECTRICAL. : Wireless Charging Pad Slow Wireless Charging, No Wireless Charging
S228A000004RevA2022-09-26. Service bulletin. EQUIPMENT:ELECTRICAL. Panasonic VP4R Wi-Fi New Enrollment Pause
S228A0000092022-09-26. Service bulletin. EQUIPMENT:ELECTRICAL. An incorrect PDF document S228A000004 Rev. A - Panasonic VP4R Wi-Fi New Enrollment Pause was uploaded for this communication during publishing and was corrected with S228A000009 Rev. A
S22080001242022-09-26. Service bulletin. EQUIPMENT:ELECTRICAL. U0184 Loss Communication With Radio Setting In Multiple Modules
S1823000056RevE2022-09-26. Service bulletin. AIR BAGS; SEATS; VEHICLE SPEED CONTROL; EXTERIOR LIGHTING. Tailgate Ajar Indicator Light Is On And Or High Effort Required To Close And Latch The Tailgate
S22230000462022-09-26. Service bulletin. VEHICLE SPEED CONTROL; PARKING BRAKE. Upper Glove Box Door Does Not Open When Button Is Pressed
S22080001172022-09-26. Service bulletin. AIR BAGS; LANE DEPARTURE; FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL. Check Engine Light and/or Service Air Suspension, Service Diesel Exhaust System or Multiple Cluster Warning Lamps Illuminated With Electronic Vehicle Information Center (EVIC) Messages
S2121000008RevC2022-09-26. Service bulletin. SERVICE BRAKES; EXTERIOR LIGHTING; POWER TRAIN. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P0765 ? UD Solenoid Circuit, P0871 ? Transmission Fluid Pressure Sensor/Switch ?C? Circuit Performance, and/or P0755 ? 2C Solenoid Circuit, Set.
90044702022-09-26. Service bulletin. TRAILER HITCHES; ELECTRICAL SYSTEM:WIRING. CONNECTOR/WIRING, Trailer Tow If the connector or wiring is physically damaged, burned, melted or corroded, prior to replacing the part, please contact FCA Redacted Content If no response in 15 minutes, proceed with repair. Please send pictures of the failed part to FCA Redacted Content
90042452022-09-26. Service bulletin. ENGINE AND ENGINE COOLING. GASKET, Timing Case Cover, Rear Gear Housing For 2021 Model Year only. If you are replacing the timing gear housing gasket due to an oil leak, please be sure to also replace all outer timing gear housing bolts (PN# 04638665 and 04882109). Do not discard these bolts as engineering will be requesting them to be returned for analysis.
23022212022-09-26. Service bulletin. ELECTRICAL SYSTEM. External AC Power Outlet Detaches From the Bezel This bulletin involves inspecting if the external AC power outlet is loose in the frame and repairing if needed Customers may comment on the following: The external AC power outlet is loose in the frame. AC power outlet Detached From Frame/Bezel1 - AC power outlet2 - Outlet Frame
0808821REVA2022-09-26. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Enhancements This bulletin involves updating the radio software level to 2036.06. Customers may experience the following: Ghost Touch, features, modes and App?s changing without drivers input. Product plan UUID is not correct in Carplay®. Carplay audio does not always resume. Battery save vs. Battery Charge toggles back to Battery Charge after sleep cycle. When ?Charge Now? is selected on key-off outside of the charging schedule ? it does nothing. In addition, the following enhancements are included:Update power supply source from 1 amp to 2.1 amps. GOOGLE® certification enhancements - screen flickers
0807621REVB2022-09-26. Service bulletin. ELECTRICAL SYSTEM. Flash: Amplifier (AMP) Diagnostic and System Updates This bulletin involves reprogramming the AMP with the latest available software. The following software enhancement is available: Amplifier update to eliminate static noise from the instrument panel mounted speakers.
756072022-09-26. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Pending Emissions Recall and REQUIRED Customer Communication - Ram Heavy Duty/Chassis Cab
S21080001572022-09-26. Service bulletin. BACK OVER PREVENTION. Intermittently Backup Camera Does Not Display Red/Yellow/Green Gridlines Or Center Guideline
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:
S1723000001RevD2022-09-26. Service bulletin. VISIBILITY. Left Hand Drivers Side Mirror Takes Longer to Defrost Or Clear Than Right Side Passenger
S2123000041RevA2022-09-26. Service bulletin. STRUCTURE. Wind Or Whistle Noise From Sunroof And Or Rear Cab
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
S2108000098RevB2022-09-26. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. Radio Screen Freeze, Blank Screen And Reset

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