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Service bulletins for the 2021 Ram 1500

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.

1129 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Air bags are shown. Show all

Bulletins, newest first
S26230000572026-10-16. Service bulletin. AIR BAGS. After Recent Service, A Replacement Occupant Classification Module (OCM) Is Non-Responsive.
S26230000572026-10-16. Service bulletin. AIR BAGS. After Recent Service, A Replacement Occupant Classification Module (OCM) Is Non-Responsive.
S23230000082023-02-13. Service bulletin. VEHICLE SPEED CONTROL; AIR BAGS; BACK OVER PREVENTION. Buzz Squeak Or Rattle Noise From Left Side Driver Door Area.
S21230000592023-01-17. Service bulletin. AIR BAGS. Water Leak At Headliner Near Driver Microphone
S21080001782023-01-17. Service bulletin. ELECTRICAL SYSTEM; AIR BAGS. The Airbag Light Is Illuminated. B2765-11 Right C-Pillar Impact Acceleration Sensor-Circuit Short To Ground
08086212023-01-17. Service bulletin. VISIBILITY; VEHICLE SPEED CONTROL; AIR BAGS; ELECTRICAL SYSTEM; POWER TRAIN. Flash: Driver Door Module (DDM) and Passenger Door Module (PDM) Updates This bulletin involves reprogramming the DDM and PDM with the latest available software. This software is for vehicles on the RRT VIN List is to improve the function and reliability of the power windows operation.
23019212023-01-17. Service bulletin. POWER TRAIN; AIR BAGS. Power Side Steps Do Not Stow Or Deploy Properly This bulletin involves inspecting and if necessary replacing the driver or passenger power side step motor. Customers may notice one or more of the following:Power side steps do not stow or deploy properly. Information Panel Cluster (IPC) shows ?Obstacle Detection? fault.
S21230000592023-01-09. Service bulletin. AIR BAGS. Water Leak At Headliner Near Driver Microphone
Z09Rev12022-12-19. Service bulletin. AIR BAGS:FRONTAL:DRIVER SIDE:CUSHION; AIR BAGS; SEATS:CRITICAL FASTENERS. Customer Satisfaction Notification Z09 Driver Side Seat Incorrect Fasteners
Z092022-12-19. Service bulletin. AIR BAGS:FRONTAL:DRIVER SIDE:CUSHION; SEATS:CRITICAL FASTENERS; AIR BAGS. Customer Satisfaction Notification Z09 Driver Side Seat Incorrect Fasteners
S16250000052022-10-17. Service bulletin. FUEL SYSTEM, DIESEL; AIR BAGS; FUEL SYSTEM, GASOLINE; EXTERIOR LIGHTING. (Rev. A) Malfunction Indicator Light (MIL) Illuminated. Service Diesel Exhaust Fluid (DEF) System ? See Dealer Soon Message on Electronic Vehicle Information Center (EVIC) Along With Possible Diagnostic Trouble Code (DTC) P241D - SCR Inducement - Forced Engine Shutdown.
18048212022-10-17. Service bulletin. PARKING BRAKE; AIR BAGS; ELECTRICAL SYSTEM; POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE:SOFTWARE. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience the following:LED light in the Start/Stop button will not illuminate when pressed.
23019212022-10-17. Service bulletin. STRUCTURE:BODY:STEP/LADDER; AIR BAGS; POWER TRAIN. Power Side Steps Do Not Stow Or Deploy Properly This bulletin involves inspecting and if necessary replacing the driver or passenger power side step motor. Customers may notice one or more of the following:Power side steps do not stow or deploy properly. Information Panel Cluster (IPC) shows ?Obstacle Detection? fault.
23018212022-10-17. Service bulletin. LANE DEPARTURE; BACK OVER PREVENTION; AIR BAGS; STRUCTURE; UNKNOWN OR OTHER; FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: CAMERA. Forward Facing Camera Bracket Delaminates From Windshield This bulletin involves Inspecting the urethane used to mount the IRCM (Integrated Radar Camera Module) bracket andreplacing the windshield if necessary. The customer may comment on the following: Forward facing camera bracket loses adhesion with the windshield. There is a warning message with MIL light illumination and that the advanceddriver assist features are inoperative
S21230000592022-09-26. Service bulletin. AIR BAGS. Water Leak At Headliner Near Driver Microphone
S21080001782022-09-26. Service bulletin. ELECTRICAL SYSTEM; AIR BAGS. The Airbag Light Is Illuminated. B2765-11 Right C-Pillar Impact Acceleration Sensor-Circuit Short To Ground
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
S21080000662022-09-26. Service bulletin. AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:STATUS INDICATOR LAMP/LIGHT. Check Engine Lamp On, P2504 Charge System Output High
S21230000592022-09-26. Service bulletin. AIR BAGS; STRUCTURE:BODY:ROOF AND PILLARS. Water Leak At Headliner Near Driver Microphone
S2123000009RevA2022-09-26. Service bulletin. EXTERIOR LIGHTING; AIR BAGS. Water is leaking into cab through the third brake light CHMSL
S21080001992022-09-15. Service bulletin. AIR BAGS. Check Engine Light (CEL), Start Stop Disabled, Vehicle Goes Into Limp In Mode
08-014-212022-07-18. Service bulletin. ENGINE AND ENGINE COOLING; AIR BAGS; EXTERIOR LIGHTING. Motor Generator Unit (MGU) Connector Not Fully Seated This bulletin involves replacing the MGU. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more ofthe following Diagnostic Trouble Codes (DTCs). U0594 - Implausible Data Received From HCP. P1B03-00 - Resolver Signal / MCPA Rationality. P0A3F-00 - Drive Motor A Position Sensor 1 Circuit. P0607-00 - ECU Internal Performance. P1C64-00 - Hybrid Perf - Engine Speed Below Target During Autostart. P0A92-00 - Hybrid Generator Performance. Customers may also experience the following: The vehicle has 15-40 minutes of driving time before a vehicle stall.The vehicle will be unable to re-start. The vehicle will lose charging of the main 12V battery. A check engine light and/or a low battery light illuminates.
S20080001932022-07-18. Service bulletin. AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT; SEAT BELTS:PRETENSIONER. Air Bag Warning Lamp Illuminates, DTC B007F-2B Passenger Seat Belt Pretensioner Circuit
08-086-21 REV. C2021-12-13. Service bulletin. VEHICLE SPEED CONTROL; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; POWER TRAIN; AIR BAGS; VISIBILITY; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. Flash: Driver Door Module (DDM) and Passenger Door Module (PDM) Updates This bulletin involves reprogramming the DDM and PDM with the latest available software. Customers may notice:Exterior mirrors do not return to the original position after shifting out of reverse gear. Exterior mirrors continue to tilt downwards even after shifting out of reverse gear. For vehicles on the RRT VIN List this software is to improve the function and reliability of the power windows operation.
08-067-212021-05-24. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; WHEELS; STEERING; POWER TRAIN; EXTERIOR LIGHTING; AIR BAGS. Flash: Drivetrain Control Module (DTCM) Diagnostic and System Improvements This bulletin involves reprogramming the DTCM with the latest available software. The technician may find one or more of the following DTCs:U1440 - Implausible Transfer Case Ratio High Received. U0403-00 - Implausible Data Received From T-case. C1403-92 - Transfer Case Range Position Sensor-Performance Or Incorrect Operation(2019-2020 Vehicles Only). If only DTC C1403 is present, follow normal diagnostic procedures before updatingthe DTCM.In addition the customer may describe one or more of the following:Traction Control System light is illuminated. A driveline bump can be heard/felt occasionally when the driver is steady on the throttle at about 20-30% on a flat road while in 4WDAUTO(2019-2020 Vehicles Only). An excessive electric motor clicking sound from the middle of the vehicle/transfer case area, when on and off the throttle(2019-2020 Vehicles Only). An excessive electric motor clicking sound with steering wheel movement, most notable in parking lot or low speed maneuvering(2019-2020 Vehicles Only). A ?Service 4WD? message/fault without commanding a transfer case shift(2019-2020 Vehicles Only).If only the ?Service 4WD? message/fault is displayed in the Instrument Panel Cluster (IPC) and no other symptom/conditionsare present, follow normal diagnostic procedures before updating the DTCM(2019-2020 Vehicles Only). The blinking of the ?4WD Low? and ?4WD High? indicator lights at the same time, on the transfer case selector switch.If both 4WD indicator lights on the transfer case selector switch are blinking and no other symptom/conditions are present,follow normal diagnostic procedures before updating the DTCM(2019-2020 Vehicles Only). During highway/freeway speeds, a bump in the driveline may be felt. This could also be described as a harsh transmission shift(2019-2020 Vehicles Only).

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