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Service bulletins for the 2018 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.

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

By type

By component

By trouble code

Bulletins, newest first
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.
S20250000012022-10-17. Service bulletin. EXTERIOR LIGHTING; BACK OVER PREVENTION. (Rev. B) Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
S19080001022022-10-17. Service bulletin. POWER TRAIN. (Rev. A) Power Inverter Load Ratings
31002202022-10-17. Service bulletin. STRUCTURE. Aluminum Body Panel Corrosion Repair This bulletin involves inspecting and if necessary removing corrosion and refinishingthe suspect aluminum panels on the vehicle, hood, door, fenders, hinges, swing gates or liftgate panels.
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.
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.
09009202022-10-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Improperly Installed Exhaust Gas Recirculation (EGR) Valve This bulletin involves removing and inspecting the vacuum tube, EGR tube gaskets, tube flange mounting bolts and possibly replacing the EGR tube gaskets and torquing the flange bolts. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set:P245B - EGR-Cooler-Bypass-Control-Circuit-Performance. The customer may also notice one or more of the following:An exhaust smell in the cabin. A whistle noise coming from the engine compartment.
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
S20080000902022-10-17. Service bulletin. VISIBILITY. The Passenger Exterior Mirror Does Not Auto Dim
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
S20250000052022-10-17. Service bulletin. ELECTRICAL SYSTEM. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes P0407 ? EGR Sensor B Circuit Low, or P0408 ? EGR Sensor B Circuit High Set
S2108000127RevA2022-10-17. Service bulletin. UNKNOWN OR OTHER. Radio Reboot Continually
S21080001302022-10-17. Service bulletin. UNKNOWN OR OTHER. Bubbles Or Delamination On The Radio Display
S21080001272022-10-17. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Reboot Continually
S21080001192022-10-17. Service bulletin. ELECTRICAL SYSTEM. Apple CarPlay Malfunctioning, Does Not Launch Or Is Cutting In An Out On Wired And Wireless Connection, Radio Stuck When IPhone Is Connected
S20080000102022-10-17. Service bulletin. EQUIPMENT:ELECTRICAL. Apple Carplay Inoperative Or Not Working, Phone Not Pairing, Carplay Lockup, Freeze or Audio Concerns
S21230000282022-10-17. Service bulletin. SEATS. Noise From Under Seat With Occupant Seated.
S18090000072022-10-17. Service bulletin. ENGINE AND ENGINE COOLING. Customer Complaint May Include Engine Oil Leak Or Consumption
08093212022-10-17. Service bulletin. ELECTRICAL SYSTEM. UAS, UAQ, UCS, UAV, UCV and UCQ Radio Over The Air Software Version Updates This bulletin provides information regarding the latest Flash 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. This is part of a two step FOTA update, first update brings software level to 22.61 and this second FOTA update will take the software to 22.64. National launch for this second step is May 24, 2021. Customers may experience one or more of the following:Navigation is incorrect or can not calculate route. GPS locations is inaccurate. Uconnect radio apps are all inoperable. Backup camera screen is blue (DT and KL). Green horizontal lines appear across screen (DT and KL). Anti-theft code request message. Backup camera screen is blank. Lines appear across screen. Radio control screen is blank or locked. Radio reset intermittently. Unable to adjust audio volume. Unable to switch modes between AM, FM, SAT or Media. In addition the following enhancements are included in this update:Carplay® connectivity improvement. Improvement to Bluetooth® phone pairing. Bluetooth devices unresponsive. Improved sound quality when using a Bluetooth phone.
S2108000127REVA2022-10-17. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Reboot Continually
S21080001302022-10-17. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Bubbles Or Delamination On The Radio Display
S21080001272022-10-17. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Reboot Continually
S21080001192022-10-17. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Apple CarPlay Malfunctioning, Does Not Launch Or Is Cutting In An Out On Wired And Wireless Connection, Radio Stuck When IPhone Is Connected

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