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Service bulletins for the 2026 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.

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

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

Bulletins, newest first
08-220-262026-05-28. Service bulletin. ELECTRICAL SYSTEM. Flash: Heating Ventilation And Cooling (HVAC) Module Updates Customers may experience one or more of the following: ● The HVAC randomly blows cold air while in the heat position. NOTE: Hot air will eventually return but the HVAC still intermittently blows cold air. ● When the heated seat feature is turned on with cloth seats, the heat cycles off after a period of time with out the occupant commanding it to turn off. This bulletin involves reprogramming the HVAC module with the latest software
1118342026-05-20. Service bulletin. ELECTRICAL SYSTEM. SENSOR – KNOCK
1118332026-05-20. Service bulletin. ELECTRICAL SYSTEM. SENSOR – KNOCK
1118312026-05-20. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. SENSOR – KNOCK
1118302026-05-20. Service bulletin. STRUCTURE:BODY; ELECTRICAL SYSTEM. SENSOR – KNOCK
1120452026-05-20. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. MODULE - DOOR
9100786 Rev 12026-05-20. Service bulletin. ELECTRICAL SYSTEM. TBM2.0H Setting U0080-00. Do not replace TBM ECU or SGW. If replacement is determined, Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders, Warranty, Mopar, Customer Pay and Service Contract. Order "68" part number for New, Unsold units only. Under certain conditions, SGW Module may take longer to establish Ethernet communication after boot up. If it takes longer than 30 seconds, The TBM2.0H module will set DTC U0080 - Ethernet Bus 1. As soon as SGW responds, the TBM2.0H will demature the DTC and move it to STORED. This issue should not cause any customer related symptoms. Do not replace the following TBM Part Numbers: WL: 68639445AF,68637489AE,68663479AE. WS: 68734941AA,68729188AC. EJ: 68592344AI. KM: 68592343AL,68735975AD. DT: 68634362AJ,68624784AF,68624784AE,68735493AB,68735493AA. DJ (HDCC): 68608721AJ. If the TBM2.0H module has set the DTC U0080 and it is STORED or ACTIVE, please clear the fault and do nothing. No further diagnostics is required. ---------------------------------------------------------------------------------------------------- TBM2.0H Setting DTC B1E21 Do Not Replace the TBM ECU. Is triggered when the TBM Backup Battery is discharged, inactive, or drained. This can happen during the lifetime of the vehicle. TBM should NOT be replace for B1E21, since there is no fault on TBM. TBM battery is replaceable. Part number of the back-up battery inside TBM is 68597650AA. Do not replace the following TBM Part Numbers: WL: 68639445A$, 68663479A$. -------------------------------------------------------------------------------------------------------- TBM Setting DTC U0499-00 Please refer to SOL S268A000004 if you are attempting to replace or repair the telematics box due to DTC U0499-00. This DTC does not cause direct customer impact and cannot be cleared. Engineering is working on TBM software enhancements, tentative Q2 2026. Do not replace the following TBM Part Numbers: KM: 68592343A$
08-215-262026-05-20. Service bulletin. ELECTRICAL SYSTEM. Right Front Turn Signal Inoperable Customers may comment on one or more of the following: ● Right front turn signal inoperable. ● "Right Front Turn Signal Light Out" message in the Instrument Panel Cluster (IPC) Fig. 1 This bulletin involves inspecting and possibly replacing the right front turn signal bulb.
08-208-26 REV. A2026-05-20. Service bulletin. ELECTRICAL SYSTEM. Radio Message "Power Surge On USB Detected" Customers may comment on the following: ● The radio displays the message: “Power surge on USB hub detected” Fig. 1. NOTE: After the message appears, no USB devices function in the hub (no charging, no data). NOTE: Hub operation does not return until the vehicle undergoes a full key cycle.
08-208-262026-05-20. Service bulletin. ELECTRICAL SYSTEM. Radio Message "Power Surge On USB Detected" Customers may comment on the following: ● The radio displays the message: “Power surge on USB hub detected” Fig. 1. NOTE: After the message appears, no USB devices function in the hub (no charging, no data). NOTE: Hub operation does not return until the vehicle undergoes a full key cycle
08-207-262026-05-20. Service bulletin. ELECTRICAL SYSTEM. Instrument Panel Cluster (IPC) Flicker Turn By Turn The customer may experience flickering on their Instrument Panel Cluster (IPC) when the turn-by-turn feature is enabled. This issue occurs when using Google Maps for Navigation via CarPlay
08-205-262026-05-20. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Power Tailgate Module (PTGM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B25E3-11 - Tailgate Absolute Position Sensor-Circuit Short To Ground. ● B25E3-12 - Tailgate Absolute Position Sensor-Circuit Short To Battery. ● B25E4-92 - Tailgate Absolute Sensor Supply-Performance Or Incorrect Operation. Customers may also comment on one or more of the following: ● Tailgate won't stay down. ● Tailgate inoperative This bulletin involves reprogramming the PTGM with the latest software.
08-149-26 REV. A2026-05-20. Service bulletin. ELECTRICAL SYSTEM; STEERING. Flash: Electric Power Steering (EPS) Module Updates Customers may experience the following: ● Battery drain with ignition off
S26230000332026-05-20. Service bulletin. ELECTRICAL SYSTEM. Front Passenger Door Window Switch, Left or Right Rear Window Switch Buttons Stuck, Click or Are Inoperative. Window Switches Are Sticking, Making a Clicking Noise or Not Operating the Window Glass.
S268A0000132026-05-20. Service bulletin. ELECTRICAL SYSTEM. Radio Volume Jumping Up To Max Volume After Radio Wake Up
08-208-262026-05-13. Service bulletin. ELECTRICAL SYSTEM. Radio Message "Power Surge On USB Detected" Customers may comment on the following: ● The radio displays the message: “Power surge on USB hub detected” Fig. 1. NOTE: After the message appears, no USB devices function in the hub (no charging, no data). NOTE: Hub operation does not return until the vehicle undergoes a full key cycle
08-207-262026-05-13. Service bulletin. ELECTRICAL SYSTEM. Instrument Panel Cluster (IPC) Flicker Turn By Turn The customer may experience flickering on their Instrument Panel Cluster (IPC) when the turn-by-turn feature is enabled. This issue occurs when using Google Maps for Navigation via CarPlay
08-205-262026-05-13. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Power Tailgate Module (PTGM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B25E3-11 - Tailgate Absolute Position Sensor-Circuit Short To Ground. ● B25E3-12 - Tailgate Absolute Position Sensor-Circuit Short To Battery. ● B25E4-92 - Tailgate Absolute Sensor Supply-Performance Or Incorrect Operation. Customers may also comment on one or more of the following: ● Tailgate won't stay down. ● Tailgate inoperative This bulletin involves reprogramming the PTGM with the latest software.
08-149-26 REV. A2026-05-13. Service bulletin. STEERING; ELECTRICAL SYSTEM. Flash: Electric Power Steering (EPS) Module Updates Customers may experience the following: ● Battery drain with ignition off
S26230000332026-05-13. Service bulletin. ELECTRICAL SYSTEM. Front Passenger Door Window Switch, Left or Right Rear Window Switch Buttons Stuck, Click or Are Inoperative. Window Switches Are Sticking, Making a Clicking Noise or Not Operating the Window Glass.
S268A0000132026-05-13. Service bulletin. ELECTRICAL SYSTEM. Radio Volume Jumping Up To Max Volume After Radio Wake Up
S26230000312026-05-06. Service bulletin. ELECTRICAL SYSTEM. Active Damping Control Module (ADCM) Stored Diagnostic Trouble Codes (DTCs).
S26230000292026-05-06. Service bulletin. ELECTRICAL SYSTEM. B235C-64-TRAILER CONNECTION - SIGNAL PLAUSIBILITY FAILURE Diagnostic Trouble Code (DTC) Set.
91008062026-05-06. Service bulletin. ELECTRICAL SYSTEM. DTC C008F Calibration Not Learned remains active until the EPB Assembly Check is successfully completed at the vehicle assembly plant. This function is performed using the EPB Assembly Check Routine. Dealers must run the EPB Assembly Check Routine and confirm successful completion before replacing the EPB module, as module replacement should not be performed to address this condition. Note: Replacement modules leave supplier with C008F active.
08-194-262026-05-06. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Flash: Ignition System Control Module (ISCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P2C30-00 - Ignition Coil Primary Circuit Fuse A. ● P2C31-00 - Ignition Coil Primary Circuit Fuse B. ● P0300-00 - Multiple Cylinder Misfire. ● P0301-00 - Cylinder 1 Misfire Detected. ● P0302-00 - Cylinder 2 Misfire Detected. ● P0303-00 - Cylinder 3 Misfire Detected. ● P0304-00 - Cylinder 4 Misfire Detected. ● P0305-00 - Cylinder 5 Misfire. ● P0306-00 - Cylinder 6 Misfire. ● P0420-00 - Catalyst System Efficiency Below Threshold Bank 1. ● P0430-00 - Catalyst System Efficiency Below Threshold Bank 2. Customers may also comment on the following: ● Engine hesitates/misfires This bulletin involves inspecting and possibly reprogramming the ISCM and the Powertrain Control Module (PCM) with the latest available software.

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