# Service bulletin B121320

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: 10187474
- Published by NHTSA: 2021\-02\-22
- Manufacturer's number: B121320
- Manufacturer's date: 2021\-01\-01
- NHTSA component: ELECTRICAL SYSTEM:IGNITION:COIL; ELECTRICAL SYSTEM; ENGINE

## NHTSA's summary

REPLACE ALL THE IGNITION COILS: The ignition coils may not have been produced to specifications which could lead to irregular running of the engine.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187474-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187474-9999.pdf)

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

## Components

Electrical system, Engine, Ignition

## Vehicles listed

- 2018 to 2019 BMW 750I
- 2016 to 2019 BMW 750LI
- 2018 to 2021 BMW B7 ALPINA
- 2017 BMW M550I
- 2018 to 2021 BMW M550I
- 2020 to 2021 BMW M850I
- 2019 to 2021 BMW X5
- 2021 BMW X6
- 2020 BMW X6 M
- 2019 to 2021 BMW X7

## Other bulletins for the same vehicles and component

- [B610722](/bulletins/10212795.md), 2022-05-31, Service bulletin: ELECTRICAL SYSTEM:IGNITION:ANTI\-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. Check Control message \(CCM\) displays "Vehicle key missing" after engine start.
- [B122119](/bulletins/10163031.md), 2019-07-22, Service bulletin: ELECTRICAL SYSTEM:IGNITION:SWITCH. HIGH ENGINE SPEED IMMEDIATELY AFTER STARTING. In rare circumstances after the engine is started with the Start\-Stop button the engine speed may immediately increase to a high constant RPM \(approximately 3000 rpm\).

JSON: [/v1/bulletins/10187474](/v1/bulletins/10187474)

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