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Service bulletins for the 2020 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.

1228 on file from NHTSA, as of 2026-10-19.

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By component

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
S20080000942020-07-27. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Uconnect Market Place APP Fatal Error Message
S20080000932020-07-27. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING; ELECTRICAL SYSTEM:ADAS:BLINDSPOT:WARNING:LAMP. Blind Spot Or Park Assist Warnings, False Activation
S19080001702020-07-27. Service bulletin. ELECTRICAL SYSTEM. Radio Screen Black At Vehicle Startup After A Sleep Cycle
S19080001022020-07-27. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Audio Mute On All Sources Except AM
08-056-202020-06-22. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; ENGINE. Flash: Battery Pack Control Module (BPCM) Updates This bulletin involves reprogramming the BPCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find thefollowing DTCs have been set:If these codes re-occur after the software update then follow published service information.P0A82-00 - Hybrid/EV Cooling Fan 1 Performance/Stuck Off. P0A97-00 - Hybrid/EV Cooling Fan 2 Performance/Stuck Off. P0AC0-00 - Hybrid Battery Pack Current Sensor 1 Circuit Performance(2019MY Only). P1AEC - MCPA HV Battery Voltage Sensor Circuit Performance(2019 MY Only). If DTCs, P0AA1-00 - Hybrid Battery Positive Contactor Circuit Stuck Closedand P0AC0-00 - Hybrid Battery Pack Current Sensor 1 Circuit Performance is set together, follow the published service diagnostic informationfor P0AA1-00 before proceeding further with this bulletin(2019 MY Only).If DTC, P0AC0-00 is set without P0AA1-00, proceed with the bulletin(2019 MY Only).
09-008-202020-06-22. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; ENGINE. Inspect Hydraulic Belt Tensioner This bulletin involves inspecting the Julian date on the hydraulic belt tensioner for possible replacement. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Codes (DTCs) have been set:P2BA3-00 - Starter/Generator Mechanical Performance. P0A92-00 -Hybrid Generator Performance. Customers may also experience the following:Dead battery. The accessory drive belt may be slipping or belt noise.
S20080000732020-06-22. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. VP4 Panasonic Radio USB Software Update Error Codes And Guidelines For Recovery
08-049-202020-05-26. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Charging System, Battery Diagnostic Tools and Warranty This information only bulletin discusses using the correct test equipment for testing batteries and charging systems, and also warranty reimbursement when battery replacements are necessary.
08-048-202020-05-26. Service bulletin. ELECTRICAL SYSTEM. UAX, UCX, UAV and UCV 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. The radio software will be updated to 33.3. Customers may experience one or more of the following:Display screen is back with no backlighting. GPS unable to load and find location. Bluetooth® device is slow to pair. Loss of saved radio presets. No audio output coming from the radio. Can not control audio volume. Radio "locks up" or freezes. Rear view camera display will not turn off. This is an ?Information Only? Service Bulletin to inform the dealer how the FOTA update is performed. This document does not contain a LOP for reimbursement.
S18080001522020-05-26. Service bulletin. ELECTRICAL SYSTEM. CEL (Check Engine Lamp) Illuminates, Recent PCM Replace Or Flash Update Performed, DTC P057B Brake Pedal Position Sensor Circuit Performance
S20250000042020-05-26. Service bulletin. ELECTRICAL SYSTEM. Customer complains of the MIL lamp on. Technician observes DTC P0456 EVAP System Small Leak or P0455 EVAP System Large Leak detected set in PCM.
S20080000522020-05-26. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM. Service Trailer Brake Warning Message Displayed On The Cluster
S20080000472020-05-26. Service bulletin. ELECTRICAL SYSTEM. No Crank, No Start
S20080000452020-05-26. Service bulletin. ELECTRICAL SYSTEM. Apps Or Icons Grayed Out
S20080000442020-05-26. Service bulletin. ELECTRICAL SYSTEM. Navigation Won't Save Address After Vehicle Sleep Cycle
S20080000412020-05-26. Service bulletin. ELECTRICAL SYSTEM. Device Not Supported Message On Radio Screen
S20080000392020-05-26. Service bulletin. ELECTRICAL SYSTEM. Radio Resetting Every 20 To 30 Seconds
S19080001022020-05-26. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Audio Mute On All Sources Except AM
S20080000342020-05-26. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TravelLink Will Not Load In Split Screen Mode Display Shows No Data Available
21-015-202020-05-26. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience the following:Bump/clunk felt during 1-2 or 2-3 upshifts. Delay/hesitation during a 3-2 shift. Bump or shutter felt during engine start/stop (ESS) situation.
08-028-202020-05-26. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Flash: Hybrid Control Processor (HCP) Updates This bulletin involves updating the HCP with the latest available software. Customers may experience the following:Bump or shutter felt during engine start/stop (ESS) situation. The following enhancement is also included in this software update:Improvements to engine start stop quality to eliminate bumps or shutter. Improvements to motor rotor temperature model for robustness.
18-020-202020-05-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customer may experience one or more of the following:Hesitation upon Engine Stop Start (ESS) autostart. Hesitation upon light acceleration below 20 MPH. Hesitation when accelerating while warming up, with coolant temperature below 60 ºC (140 ºF).
W142020-05-26. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES. Customer Satisfaction Notification W14 Ground Bolt
S20250000012020-05-26. Service bulletin. ELECTRICAL SYSTEM. Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
S20080000042020-05-26. Service bulletin. STEERING; EQUIPMENT; ELECTRICAL SYSTEM. Left Side Steering Wheel EVIC And Radio Switches Are Inoperative

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