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Service bulletins for the 2018 Ram 3500

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
S22090000022023-01-09. Service bulletin. ENGINE. Customer complaints may include abnormal engine noise, rough idle, lack of power, misfire. When performing diagnosis, an internal engine concern may be suspected.
08076222022-12-19. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. UAS, UAQ, UCS, UAV, UCV and UCQ Radio Over The Air Software Version Updates
S22090000042022-12-19. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. If a Mopar oil filter is not available, use a filter that meets or exceeds USCAR36 specification and is compatible with semi and full synthetic oils.
S228A0000282022-12-12. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Remained On After Ignition Is Switched Off, Dead Battery from Excessive Radio Current Draw
S22140000032022-11-07. Service bulletin. FUEL SYSTEM, DIESEL. Guidelines For The Use Of Alternative Diesel Fuels.
S22230000632022-11-07. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM. Ambient Temperature Sensor Servicing.
90044702022-11-07. Service bulletin. STRUCTURE:BODY:BUMPERS; ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS/RECEPTACLES; TRAILER HITCHES. CONNECTOR Trailer Tow,WIRING Trailer Tow,CONNECTOR 7 Way,WIRING Rear Bumper 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
91000622022-11-07. Service bulletin. STRUCTURE:BODY:STEP/LADDER; WHEELS. Bed Step If you are installing the AH level or older Bed Step kit on a D2 3500 truck, then also order two units of washer 06508010AA. Reference I-sheet K6862947AC from the bed step kit, page 2, graphic 2. Washers are to be installed on bolts D, between the bed step A and vehicle. Note washers are not required with AH level or older kits installed on DJ 2500 trucks, or with AI or newer level bed steps.
31001222022-10-31. Service bulletin. STRUCTURE. Approved Use of Weld Through Primers This bulletin documents the FCA US LLC position regarding the use of weld through primer when using Squeeze Type Resistance Spot Welding (STRSW) and Gas Metal Arc Welding (GMAW) processes when welding steel body panels and structural components.
S22230000632022-10-31. Service bulletin. EQUIPMENT:ELECTRICAL. Ambient Temperature Sensor Servicing.
31001222022-10-31. Service bulletin. STRUCTURE:INTERIOR PANELS:DOOR; STRUCTURE; UNKNOWN OR OTHER. Approved Use of Weld Through Primers This bulletin documents the FCA US LLC position regarding the use of weld through primer when using Squeeze Type Resistance Spot Welding (STRSW) and Gas Metal Arc Welding (GMAW) processes when welding steel body panels and structural components.
S22230000632022-10-31. Service bulletin. EQUIPMENT:ELECTRICAL. Ambient Temperature Sensor Servicing.
S19080001022022-10-17. Service bulletin. POWER TRAIN. (Rev. A) Power Inverter Load Ratings
1806120REVA2022-10-17. Service bulletin. SERVICE BRAKES; POWER TRAIN; BACK OVER PREVENTION; ELECTRICAL SYSTEM; EXTERIOR LIGHTING; FUEL SYSTEM, GASOLINE. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set:P2706 - MS Solenoid Circuit(Sales Code DG7 Only). P0868 - Line Pressure Low. P229F - Aftertreatment NOx Sensor Circuit Performance - Bank 1 Sensor 2. P207F - Reductant Quality Performance. P2509 - PCM/PCM Power Input Signal Intermittent. P0401 - EGR System Performance. P0870 - OD Hydraulic Pressure Test. P040B - Exhaust Gas Recirculation Temperature Sensor "A" Circuit Performance. P2201 - Aftertreatment NOx Sensor Circuit Performance - Bank 1 Sensor 1. P1C54 - SCR NOx Catalyst Missing. P249E - Closed Loop SCR Reductant Injection Control At Limit - Flow Too High. P0128 - Thermostat Rationality. P24C7 - Particulate Matter Sensor Temperature Circuit Performance. Customers may also comment on the following:Engine misfire in cold ambient temperatures. In addition, the following software enhancements are also available:Scan tool fan actuation test fix. Enabling diagnostics forDTC P208B- Reductant Pump 1 Control Performance. Unable to turn on the ability to set ?MAX? road speed using wiTECH scan tool. Mass Air Flow (MAF) sensor Out Of Range (OOR) low calibration. Improved 5-4 shift (reduce shift flare) after extended operation in 5th or 6th gear. Engine Manifold Pressure Misfire Monitor (EMP MFM) retune(Sales Code DG7 Only). Idle based misfire retune. Abort timer for Selective Catalytic Reduction (SCR) out NOx sensor missing change to 70 seconds. Map SCR missingFault/DTC P1C54to tampering inducement. Particulate Matter (PM) sensor false fault improvement. CC inner loop used up faults. Ultrasonic Flow Meter (UFM) test results fix. Engine run state idle unstable software fix. Ability to write Engine Serial Number (ESN
08094202022-10-17. Service bulletin. EXTERIOR LIGHTING; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Flash: Drivetrain Control Module (DTCM) Update This bulletin involves reprogramming the DTCM with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set::If the customer has any concerns with the transfer case or if the tech performs any repairs on the transfer case, the software must be updated.C140E - Transfer Case Motor Blocked. If DTC C140E is present, follow normal diagnostic procedures before updating the DTCM.In addition the customer may describe the following:The ?Service 4WD? message/fault is displayed in the Instrument Panel Cluster (IPC). Transfer case shift fork tabs broken during range shift. Noisy (clunking/ratcheting) transfer case range shifts. Failure to complete transfer case range shifts. The following software enhancement is available:This update will help reduce premature transfer case failure.
S1918000003RevA2022-10-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. Revision A: Intermittent Engine Buck, Surge, or Misfire.
051520292022-10-17. Service bulletin. VISIBILITY/WIPER. Washer Fluid Level Sensor Prior to replacing this part due to "Low Washer Fluid" tell tale light on the dash and the washer fluid bottle is full, please perform the this inspection. Inspect the sensor for a fluid coating on the sensor pins. Orange colored rain repellant can cause this fluid build-up. Clean the pins, drain the reservoir, and fill with Mopar approved washer fluid. Check to determine if the issue has been resolved. Continue with repair if necessary. Also, please inform the customer not to use Rain-X in the system to avoid this issue. Please contact Chuck Hood at cell (248) 613-7591 if you have questions or need additional information. Thank you.
18131222022-10-17. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set: P064F - Unauthorized Software/Calibration Detected. P229F - Aftertreatment NOx Sensor Circuit Performance - Bank 1 Sensor 2. P207F - Reductant Quality Performance. P249E - Closed Loop Scr Reductant Injection Control At Limit - Flow Too High. P2509 - PCM/PCM Power Input Signal Intermittent. P0128 - Thermostat Rationality. P2201 - Aftertreatment NOx Sensor Circuit Performance - Bank 1 Sensor 1. In addition, the following software enhancements are also available:Scan Tool Fan Actuation Test fix. Enabling DTC P208B - Reductant Pump 1 Control Performance. Mass Air Flow (MAF) Sensor Out Of Range (OOR) low calibration. Idle based misfire retune. Abort timer for Selective Catalytic Reduction (SCR) Out NOx Sensor missing change to 70 seconds. Map SCR missing DTC/Fault (P1C54) to tampering inducement. Particulate Matter (PM) Sensor False Fault Improvement. CC inner loop used up faults. Ultrasonic Flow Meter (UFM) test results fix. Engine run state idle unstable software fix. Ability to write Engine Serial Number (ESN) through wiTECH. Add Diesel Exhaust Fluid (DEF)/Reagent type as a readable value in wiTECH. Fan actuation test. SCR missing tuning capability improvement. Smart tampering improvement.
23016202022-10-17. Service bulletin. TRAILER HITCHES. 5th Wheel/Gooseneck Trailer Hitch Does Not Fit
D19022022-10-17. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). Fast Feedback Program - 6.7L Cummins Engine - 2019 & 2020 HD Ram & 6.7L Cummins Diesel Engine Control Module (ECM) - 2018 Ram- All Models (Rev. E)
S20080000932022-10-17. Service bulletin. LANE DEPARTURE: BLIND SPOT DETECTION. Blind Spot Or Park Assist Warnings, False Activation
S19080000472022-10-17. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Volume Uncontrollable Or Stuck On High
S19080000792022-10-17. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Travellink Fuel Prices Are Incorrect
S20080000792022-10-17. Service bulletin. ENGINE AND ENGINE COOLING. Cluster Engine Run Hours Resets To Zero While Driving
S2108000127RevA2022-10-17. Service bulletin. UNKNOWN OR OTHER. Radio Reboot Continually

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