# Service bulletin B612422

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: 10249029
- Published by NHTSA: 2024\-02\-01
- Manufacturer's number: B612422
- Manufacturer's date: 2024\-01\-02
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

The Combined Charging Unit \(CCU\) may be affected by a manufacturing defect.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10249029-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10249029-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2022 BMW I4

## Recalls for the same vehicles and component

- [25V395000](/recalls/nhtsa/25V395000.md), 2025-07-23: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION MOTOR:CONTROLLER:SOFTWARE
- [25V470000](/recalls/nhtsa/25V470000.md), 2025-07-16: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [23V449000](/recalls/nhtsa/23V449000.md), 2023-06-28: ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT
- [23V118000](/recalls/nhtsa/23V118000.md), 2023-02-23: ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE
- [22V944000](/recalls/nhtsa/22V944000.md), 2022-12-20: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY THERMAL:MANAGEMENT:SOFTWARE
- [22V541000](/recalls/nhtsa/22V541000.md), 2022-07-27: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [22V483000](/recalls/nhtsa/22V483000.md), 2022-07-07: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

## Other bulletins for the same vehicles and component

- [B640925](/bulletins/11026956.md), 2026-01-05, Service campaign: ELECTRICAL SYSTEM. A faulty electric auxiliary heater may have been installed in the certain vehicles. This could result in thefailure of the electric auxiliary heater, utilized for the vehicle interior.
- [B121425](/bulletins/11025669.md), 2025-11-25, Service campaign: ELECTRICAL SYSTEM; POWER TRAIN. RSU availability. BMW AG is conducting a Service Action on certain Model Year 2025 \- 2026 BMW vehicles that were produced between March 17, 2021 – November 6, 2025. In certain driving situations there can be a loss of traction or wheel slip followed by a throttle or torque requirement that can potentially damage the axle shafts. Damage of the drive shaft can cause it to break.
- [B640925](/bulletins/11022362.md), 2025-09-03, Service campaign: ELECTRICAL SYSTEM. A faulty electric auxiliary heater may have been installed in the certain vehicles. This could result in thefailure of the electric auxiliary heater, utilized for the vehicle interior.
- [B120523](/bulletins/11012080.md), 2024-12-31, Service bulletin: ELECTRICAL SYSTEM. The customer states there is a Drivetrain Malfunction message displayed in the instrument cluster. In addition, the following fault memory entries are saved in the CCU \(Combined Charging Unit\) 0317F2 \- High\-voltage system, insulation fault detected: when switch contactors are closed. 0317F1 \- High\-voltage system, insulation resistance below warning threshold: when switch contactors are closed. The fault memory entries \(isolation faults\) can occur both individually and in combination and must be traced back to the eDrive motor based on the ISTA test procedure. If ISTA test procedure lists possible cause of fault as; A metal chip is found behind the brush module \(between the brush module and the end shield of the electrical machine\). Repair required. Refer to service solution no. 20000794435083 in Aftersales Information Research \(AIR\). Follow information in the Procedure section below.
- [B611224](/bulletins/10253351.md), 2024-05-03, Service bulletin: ELECTRICAL SYSTEM. The Combined Charging Unit \(CCU\) may not have been produced according to BMW specifications. This can lead to an internal coolant leak which can result in a failure of the Combined Charging Unit.Possible faults may include\- HV charging interruption No high\-voltage readiness when starting up The high\-voltage system switching off while driving, causing the vehicle to coast slowly to a stop
- [B610724](/bulletins/10252039.md), 2024-04-01, Service bulletin: ELECTRICAL SYSTEM. This Informational Bulletin is intended as a guided work through process to address BEV/PHEV charging issues. The step\-by\-step guide will help walk you through the correct “basic” steps that should be followed when addressing and diagnosing battery electric vehicles \(BEV\) and plug in hybrid vehicles \(PHEV\) charging issues.
- [B610624](/bulletins/10252029.md), 2024-04-01, Service bulletin: ELECTRICAL SYSTEM. This Informational Bulletin is intended as a guided work\-through process to address customer charging complaints. The step\-by\-step guide will help walk you through the “basic” procedure to test the charger/infrastructure when the vehicle does not charge, either at a: Home charger AC Level 1/Level 2 \- Flexible Fast Charger/hard wired Wallbox, or a Public AC Level 2, or DC Level 3 \- Fast Charging Station Note: All PHEV and BEV vehicles may be affected.
- [B610324](/bulletins/10250365.md), 2024-03-02, Service bulletin: ELECTRICAL SYSTEM. Gen 5 BEV/PHEV vehicles may set the Combined Charging Unit \(CCU\) in programming abort due to nocommunication to the HV charge socket electronics.
- [B611305](/bulletins/10249027.md), 2024-02-01, Service bulletin: ELECTRICAL SYSTEM. The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important information for the dealer on how to handle “discharged battery” complaints.
- [B612523](/bulletins/10244504.md), 2023-11-01, Service bulletin: ELECTRICAL SYSTEM. The purpose of this Service Bulletin \(SIB\) is informational regarding DC \(direct current\) charging complaints on Gen 5 Battery Electric Vehicles \(BEV\). It serves as a supporting argument and is intended to help distinguish between a standard designed function or component operation from an actual system fault in a DC charging customer complaint \(i.e., “DC Not charging or “DC charging too slow”. Helpful “Tips and Tricks” have been included on each topic within the document that can be used as reference to aid in the diagnosis or in understanding the system. The situation involves several possible causes: 1. Limitation of charging power by the charging station or charging app configuration. 2. Decreasing charging power at a very high state of charge \(SoC\). 3. Too frequent DC charging attempts within a short period of time. 4. The high\-voltage battery is not at the ideal temperature. 5. Ageing of the high\-voltage battery.

JSON: [/v1/bulletins/10249029](/v1/bulletins/10249029)

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