# Service bulletin 0802921REVA

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.

- Type: Service bulletin
- NHTSA id: 10220986
- Published by NHTSA: 2022\-09\-26
- Manufacturer's number: 0802921REVA
- Manufacturer's date: 2021\-03\-27
- NHTSA component: ELECTRICAL SYSTEM; VISIBILITY

## NHTSA's summary

Door Control Module Window Inoperative This bulletin involves replacing one or both of the door modules. Technician may find that one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: B18BA\-12 \- Window Control \- Circuit Short to Battery B18BA\-13 \- Window Control \- Circuit Open In addition the customer may notice one or more of the following: Driver and/or passenger windows stop working. If the window switch is held in the up position for at least two seconds,the obstruction auto\-down function may not work. Windows may go up slower than expected.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10220986-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10220986-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Glass, wipers and mirrors

## Trouble codes named

B18BA

## Vehicles listed

- 2020 to 2021 RAM 2500
- 2020 to 2021 RAM 3500
- 2020 to 2021 RAM 4500
- 2020 to 2021 RAM 5500

## Recalls for the same vehicles and component

- [2023026](/recalls/tc/2023026.md), 2023-02-09: Electrical
- [23V060000](/recalls/nhtsa/23V060000.md), 2023-02-09: ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS
- [2022025](/recalls/tc/2022025.md), 2022-01-27: Visual System
- [22V035000](/recalls/nhtsa/22V035000.md), 2022-01-27: VISIBILITY:WINDSHIELD WIPER/WASHER:LINKAGES
- [2021629](/recalls/tc/2021629.md), 2021-10-14: Electrical
- [21V798000](/recalls/nhtsa/21V798000.md), 2021-10-14: ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS
- [2021138](/recalls/tc/2021138.md), 2021-03-11: Electrical
- [21V163000](/recalls/nhtsa/21V163000.md), 2021-03-11: ELECTRICAL SYSTEM
- [2020472](/recalls/tc/2020472.md), 2020-10-08: Visual System
- [20V622000](/recalls/nhtsa/20V622000.md), 2020-10-08: VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR

## Other bulletins for the same vehicles and component

- [9100901](/bulletins/11037344.md), 2026-09-17, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [113744](/bulletins/11035981.md), 2026-08-06, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR \- TURBOCHARGER SPEED
- [113742](/bulletins/11035980.md), 2026-08-06, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR \- TURBOCHARGER SPEED
- [113069](/bulletins/11034910.md), 2026-07-08, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. SWITCH – HEADLAMP
- [113070](/bulletins/11034909.md), 2026-07-08, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. SWITCH – HEADLAMP
- [S1623000028 Rev. K](/bulletins/11033975.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [9100835](/bulletins/11033957.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM. Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [S2623000040](/bulletins/11033896.md), 2026-06-16, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry Exterior Door Handle Inoperative When Touched To Lock And Or Unlock.
- [S1623000028 REV.I](/bulletins/11033308.md), 2026-06-03, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [08\-208\-26 REV. A](/bulletins/11032842.md), 2026-05-20, 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.

JSON: [/v1/bulletins/10220986](/v1/bulletins/10220986)

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