# Service bulletin B121121

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: 10205614
- Published by NHTSA: 2021\-12\-27
- Manufacturer's number: B121121
- Manufacturer's date: 2021\-11\-01
- NHTSA component: ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT:VIDEO \(TOUCH\)SCREEN/MONITOR/UNIT

## NHTSA's summary

???When charging the vehicle with an Occasional Use Charger \(OUC\) after previously using a Wallbox charger, the selected charging current might not be displayed correctly in the instrument cluster.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10205614-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10205614-9999.pdf)

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

## Components

Electrical system, Equipment and accessories

## Vehicles listed

- 2018 to 2021 BMW 530E
- 2017 to 2021 BMW 530I
- 2018 to 2019 BMW 540D
- 2020 BMW 540D
- 2017 to 2021 BMW 540I
- 2018 BMW C 400 X
- 2017 BMW F800 R
- 2017 BMW M550I
- 2018 to 2021 BMW M550I

## Recalls for the same vehicles and component

- [26V441000](/recalls/nhtsa/26V441000.md), 2026-07-08: ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY
- [26V056000](/recalls/nhtsa/26V056000.md), 2026-01-30: ELECTRICAL SYSTEM:STARTER ASSEMBLY
- [25V636000](/recalls/nhtsa/25V636000.md), 2025-09-23: ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY
- [20V761000](/recalls/nhtsa/20V761000.md), 2020-12-09: ELECTRICAL SYSTEM:12V/24V/48V BATTERY
- [20V601000](/recalls/nhtsa/20V601000.md), 2020-09-30: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [18V652000](/recalls/nhtsa/18V652000.md), 2018-09-20: EQUIPMENT:ELECTRICAL
- [17V481000](/recalls/nhtsa/17V481000.md), 2017-07-28: EQUIPMENT

## Other bulletins for the same vehicles and component

- [B840226](/bulletins/11035408.md), 2026-07-31, Service campaign: ELECTRICAL SYSTEM. Once the Telematics Module \(TCB2\) enters sleep mode, a BMW Data Services trigger for Remote Services\(remote engine start, lock/unlock/climate conditioning\) will not be able to reactivate the TCB2. Due to this issue, Remote Services will not function in the vehicle when parked and locked.
- [B720125](/bulletins/11028928.md), 2026-02-23, Warranty extension: AIR BAGS; ELECTRICAL SYSTEM; SEATS. A situation may occur where the front passenger seat is not occupied; however, a “fasten seat belt” warning and a front passenger seat air bag deactivation message appears. If the situation is currently present, sit in the seat and move the seat to a slightly different position. The POL \(Passenger Occupancy Light\) light should now function correctly. In some cases, the Air bag Warning Light was illuminated, and the following Advanced Crash Safety Module \(ACSM\) fault is stored: 930A1C \- Front passenger seat occupancy detection transmitting fault \(moisture\)
- [B720125](/bulletins/11024726.md), 2025-11-03, Warranty extension: AIR BAGS; ELECTRICAL SYSTEM. A situation may occur where the front passenger seat is not occupied; however, a “fasten seat belt” warning and a front passenger seat air bag deactivation message appears. If the situation is currently present, sit in the seat and move the seat to a slightly different position. The POL \(Passenger Occupancy Light\) light should now function correctly. In some cases, the Air bag Warning Light was illuminated, and the following Advanced Crash Safety Module \(ACSM\) fault is stored: 930A1C \- Front passenger seat occupancy detection transmitting fault \(moisture\)
- [B720125](/bulletins/11017101.md), 2025-04-18, Warranty extension: ELECTRICAL SYSTEM; AIR BAGS. The Supplemental Restraint Systems \(SRS\) Front Passenger’s Seat Occupancy Capacitive Interior Sensor \(CIS\) Mat for defects in materials and/or workmanship that causes a false seat occupancy alert to occur has been extended to 10 years / 120,000 miles as determined from the vehicle's original in\-service / first delivery date.
- [B011624](/bulletins/11013037.md), 2025-01-23, Warranty extension: ELECTRICAL SYSTEM. The Telematics Control Units \(TCU\) Internal Emergency \(Backup\) Battery for defects in materials and/or workmanship has been extended to 6 years without mileage limitation, as determined from the vehicles original first in\-service / delivery date. This coverage is subject to the same vehicle eligibility requirements, limitations, and exclusions that apply to the BMW New Vehicle Limited Warranty.
- [B011824](/bulletins/11012111.md), 2025-01-02, Warranty extension: ELECTRICAL SYSTEM. The Telematics Control Units \(TCU\) Internal Emergency \(Backup\) Battery for defects in materials and/or workmanship has been extended to 6 years without mileage limitation, as determined from the vehicles original first in\-service / delivery date.
- [011024](/bulletins/11012072.md), 2024-12-31, Warranty extension: ELECTRICAL SYSTEM. The High\-Voltage \(HV\) Battery Assembly Cell Modules Temperature Sensors \(Internal NTC repair kit\-specific\) limited warranty for defects in materials or workmanship has been extended to 15 years / 150,000 miles as determined from the original in\-service/first delivery date.
- [B660720](/bulletins/10250601.md), 2024-03-02, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. The functionality of the left rear SRR sensor could be reduced which would display the Driving Assistance Check Control Message.
- [B660820](/bulletins/10250600.md), 2024-03-02, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT. The functionality of the right rear SRR sensor could be reduced which would display the "Driving Assistance"\- Check Control Message.
- [B510819](/bulletins/10249437.md), 2024-02-01, Service bulletin: VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM. The basic conditions for initializing the power windows are not met.

JSON: [/v1/bulletins/10205614](/v1/bulletins/10205614)

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