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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

Bulletins, newest first
S21080000932023-10-02. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; UNKNOWN OR OTHER. Apple CarPlay Does Not Work Or Not Connecting
S23080000422023-10-02. Service bulletin. STEERING:ELECTRIC POWER ASSIST SYSTEM; UNKNOWN OR OTHER; STEERING:STEERING CONTROL MODULE. EPS And Other CAN C Modules Offline, U0001-00, U0002-00, and U0131-00 Can C Bus Diagnostic Trouble Codes (DTCs).
08181232023-09-25. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Over The Air Updating to QR40.12 Software Version ? Mobile Wi-Fi inoperative upon start up. ? Hotspot gives "No Internet" connection message on phone, when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air (FOTA) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from QR39.62 and QR39.57 to QR40.12. NOTE: National launch for this FOTA update is expected to begin August 16, 2023
ZD72023-09-25. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Customer Satisfaction Notification ZD7 - Radio Software update
S23080000422023-09-25. Service bulletin. EQUIPMENT:ELECTRICAL. EPS And Other CAN C Modules Offline, U0001 And U0002 Can C Bus Diagnostic Trouble Codes (DTCs)
S238A0000342023-09-25. Service bulletin. ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS:ACCESORY POWER OUTLET/JACK/PORT/USB/SAE/CIGARETTE LIGHTER. USB Hub In-Operable
S22080000112023-09-25. Service bulletin. EQUIPMENT:ELECTRICAL. Wireless Qi Charger Not Charging
91001962023-09-25. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Lubrication and Maintenance Fluids If MOPAR fluids and chemicals are not readily available, please review Service Library for specifications so a suitable alternative can be used
91001812023-09-25. Service bulletin. POWER TRAIN; POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). Transfer case rear output seal For customer concerns related to Transfer Case Rear Output Seal leak please call FCA Redacted Content prior to repair. If no response within 15 minutes, proceed with the repair.
24006232023-08-21. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. A/C Diagnostic LOP Change (Except Alfa Romeo Vehicles)
23074232023-08-21. Service bulletin. STRUCTURE. Water Leak at Center High Mounted Stop Lamp (CHMSL) Warranty Extension XG1 Customers may experience one or more of the following: ? Water on the headliner. ? Water at the back of the cab. ? A leak from the third brake/cargo light/CHMSL. This bulletin involves replacing the CHMSL assembly.
ReferenceZD72023-08-21. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Customer Satisfaction Notification ZD7 - Radio Software Update
917452023-08-21. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS; UNKNOWN OR OTHER. FCA Caribbean Warranty Bulletin ID-23-13 (XG1) Center High Mounted Stop Lamp (CHMSL) - Select 2019 - 2021 RAM 1500 Pickup (DT)
917422023-08-21. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS; UNKNOWN OR OTHER. Warranty Bulletin D-23-11 (XG1) Center High Mounted Stop Lamp (CHMSL) - Select 2019 - 2021 RAM 1500 Pickup (DT)
S238A0000282023-08-21. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; UNKNOWN OR OTHER. Radio Black Screen, Freezing, Reset, Cutting Out Or Inoperative Intermittently
S23230000202023-08-21. Service bulletin. UNKNOWN OR OTHER; STRUCTURE:BODY:STEP/LADDER. Power Side Steps Reverse, Stop In Motion, And/Or Do Not Deploy Or Stow
91001792023-08-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. Transmission, Valve Body For 2021 DT with concerns related to DTC P0731 (Gear 1 Shift Incorrect ratio) contact FCA Redacted Content. If no response in 15 minutes, proceed with order.
S23090000022023-07-31. Service bulletin. ENGINE AND ENGINE COOLING. MIL lamp-on. Engine noise, rattle. Misfire or rough running.
S238A0000242023-07-31. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. SOS, Assistance Calls Not Successful After Radio Replacement or Radio Software Update
BulletinA2023-07-31. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Customer Satisfaction Notification ZD7 - Radio Software Update
08129232023-07-31. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; UNKNOWN OR OTHER. Radio Over The Air Updating from PR39.92 to PR40.12 Software Version ? Radio Wi-Fi Hotspot connection not working. This bulletin provides information regarding the latest Firmware Over The Air (FOTA) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from PR39.92 to PR40.12. NOTE: National launch for this FOTA update is expected to begin June 23, 2023.
23058232023-07-31. Service bulletin. STRUCTURE:BODY:DOOR. Door Trim/Audio Related Noise This bulletin involves replacing the door trim panel retainer clips and securingthe door panel. The customer may describe a buzzing heard when playing music at higher volume,speaker rattles and/or crackles. Can occur on any or all doors.
07007232023-07-31. Service bulletin. ENGINE AND ENGINE COOLING. Water Quality When Mixed With Engine Coolant
90040732023-07-31. Service bulletin. BACK OVER PREVENTION; WHEELS. SENSOR, Wheel Speed When replacing a front wheel speed sensor, hold the convolute towards the sensor head and add a zip tie over the convolute to secure it with the sensor pigtail wire to prevent movement. This will protect the wire from the brake splash shield.
91001432023-07-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR. PSU right intake camshaft Case 1) If you are to flash the PSU (Pentastar Upgrade Engine) PCM due to P0300 code presence, only AB or previous LEVEL PSU right intake camshaft PN 05047913AA or AB (old version) should be replaced. If the engine is equipped with the AC/AD LEVEL PSU right intake camshaft PN 05047913AC or AD (new version), camshaft should NOT be replaced. Case 2) If the intake camshaft or intake rocker arm has excessive wear on the high lift profile (Rocker arm: slider, Camshaft: central lobe), replace the intake camshaft (1) in that cylinder head and all intake rocker arms (6).

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