# Service bulletin B640224

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: 10249421
- Published by NHTSA: 2024\-02\-01
- Manufacturer's number: B640224
- Manufacturer's date: 2024\-01\-26
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

The coolant changeover valve may develop a coolant leak when the outside temperatures go below 19°F \(\-7°C\). The vehicles operating systems would also need to be at that same low temperature \(example: being parked outside, overnight in low temperatures\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10249421-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10249421-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2023 to 2024 BMW I4
- 2024 BMW I5
- 2023 to 2024 BMW I7

## Other bulletins for the same vehicles and component

- [B170124](/bulletins/11029046.md), 2026-02-26, Service bulletin: ENGINE. There is coolant leaking from under the car Low heater output Possible Check Control message “Drive, you can continue driving” \(ID49\) Possible fault codes stored in these BEV vehicles: 224163 – Electric auxiliary heater for the high\-voltage battery unit: Undervoltage or internal communication fault 8049AA \- Coolant level sensor, expansion tank: Coolant level low or short circuit to ground or line disconnection 80124F – Electric auxiliary heater: Communication in electric auxiliary heater faulty 224F60 \- Coolant level sensor, expansion tank: Coolant level low or short circuit to ground or line disconnection 224111 \- Cooling system for power electronics: Coolant loss detected 224107 \- Cooling system for high\-voltage battery unit, component protection: Detection of coolant loss
- [B063625](/bulletins/11020075.md), 2025-07-02, Other: ENGINE. Hydrobearing Return
- [B640725](/bulletins/11019571.md), 2025-06-17, Service campaign: ENGINE. A faulty electric auxiliary heater may have been installed in the certain vehicles. This could result in the failure of the electric auxiliary heater.
- [B640625](/bulletins/11019570.md), 2025-06-17, Service campaign: ENGINE. A faulty electric auxiliary heater may have been installed in the certain vehicles. This could result in the failure of the electric auxiliary heater.
- [B170124](/bulletins/11016419.md), 2025-04-03, Service bulletin: ENGINE. There is coolant leaking from under the car Low heater output Possible Check Control message “Drive, you can continue driving” \(ID49\) Possible fault codes stored in these BEV vehicles: 224163 – Electric auxiliary heater for the high\-voltage battery unit: Undervoltage or internal communication fault 8049AA \- Coolant level sensor, expansion tank: Coolant level low or short circuit to ground or line disconnection 80124F – Electric auxiliary heater: Communication in electric auxiliary heater faulty 224F60 \- Coolant level sensor, expansion tank: Coolant level low or short circuit to ground or line disconnection 224111 \- Cooling system for power electronics: Coolant loss detected 224107 \- Cooling system for high\-voltage battery unit, component protection: Detection of coolant loss
- [B170124](/bulletins/11014422.md), 2025-02-24, Service bulletin: ENGINE. There is coolant leaking from under the car Low heater output Possible Check Control message “Drive, you can continue driving” \(ID49\) Possible fault codes stored in these BEV vehicles: 224163 – Electric auxiliary heater for the high\-voltage battery unit: Undervoltage or internal communication fault 8049AA \- Coolant level sensor, expansion tank: Coolant level low or short circuit to ground or line disconnection 80124F – Electric auxiliary heater: Communication in electric auxiliary heater faulty 224F60 \- Coolant level sensor, expansion tank: Coolant level low or short circuit to ground or line disconnection 224111 \- Cooling system for power electronics: Coolant loss detected 224107 \- Cooling system for high\-voltage battery unit, component protection: Detection of coolant loss
- [B170124](/bulletins/11014035.md), 2025-02-10, Service bulletin: ENGINE. There is coolant leaking from under the car Low heater output Possible Check Control message “Drive, you can continue driving” \(ID49\) Possible fault codes stored in these BEV vehicles: 224163 – Electric auxiliary heater for the high\-voltage battery unit: Undervoltage or internalcommunication fault 8049AA \- Coolant level sensor, expansion tank: Coolant level low or short circuit to ground or linedisconnection 80124F – Electric auxiliary heater: Communication in electric auxiliary heater faulty 224F60 \- Coolant level sensor, expansion tank: Coolant level low or short circuit to ground or linedisconnection 224111 \- Cooling system for power electronics: Coolant loss detected 224107 \- Cooling system for high\-voltage battery unit, component protection: Detection of coolantloss
- [B640624](/bulletins/11005236.md), 2024-07-25, Service campaign: ENGINE. Quality checks have determined that the coolant changeover valve may develop a coolant leak under very low outside temperatures \(significantly lower than 32º F \(0 C\)\).
- [B640624](/bulletins/11000512.md), 2024-05-29, Service campaign: ENGINE. Quality checks have determined that the coolant changeover valve may develop a coolant leak under very low outside temperatures \(significantly lower than 32º F \(0 C\)\).
- [B640224](/bulletins/11000510.md), 2024-05-29, Service bulletin: ENGINE. DELIVERY STOP: COOLANT CHANGEOVER VALVE

JSON: [/v1/bulletins/10249421](/v1/bulletins/10249421)

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