# Service bulletin B170121

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: 10212788
- Published by NHTSA: 2022\-05\-31
- Manufacturer's number: B170121
- Manufacturer's date: 2022\-04\-01
- NHTSA component: FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING

## NHTSA's summary

The quick disconnect coupling on the cylinder head coolant vent line could break at the cylinder head. This would lead to loss of coolant from the engine.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10212788-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10212788-9999.pdf)

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

## Components

Engine, Fuel system

## Vehicles listed

- 2014 to 2016 BMW 228I
- 2017 to 2021 BMW 230I
- 2013 to 2018 BMW 320I
- 2014 to 2018 BMW 328D
- 2012 to 2016 BMW 328I
- 2016 to 2018 BMW 330E
- 2017 to 2020 BMW 330I
- 2012 to 2017 BMW 335I
- 2016 to 2019 BMW 340I
- 2020 BMW 340I
- 2014 to 2016 BMW 428I
- 2017 to 2020 BMW 430I
- 2014 to 2016 BMW 435I
- 2017 to 2020 BMW 440I
- 2017 BMW 5\-SERIES GRAN TURISMO
- 2013 BMW ACTIVE HYBRID 3
- 2014 to 2015 BMW ACTIVE HYBRID 3
- 2014 to 2016 BMW M235I
- 2017 to 2021 BMW M240I

## Recalls for the same vehicles and component

- [2025560](/recalls/tc/2025560.md), 2025-10-15: Engine
- [25V700000](/recalls/nhtsa/25V700000.md), 2025-10-15: FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
- [2025514](/recalls/tc/2025514.md), 2025-09-25: Engine
- [2024468](/recalls/tc/2024468.md), 2024-08-13: Engine
- [24V608000](/recalls/nhtsa/24V608000.md), 2024-08-13: ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS/RECEPTACLES; ENGINE AND ENGINE COOLING:COOLING SYSTEM:PUMP
- [23V707000](/recalls/nhtsa/23V707000.md), 2023-10-20: ENGINE AND ENGINE COOLING:ENGINE
- [2022095](/recalls/tc/2022095.md), 2022-03-02: Engine
- [22V119000](/recalls/nhtsa/22V119000.md), 2022-03-02: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\)
- [2021711](/recalls/tc/2021711.md), 2021-11-19: Engine
- [21V907000](/recalls/nhtsa/21V907000.md), 2021-11-19: FUEL SYSTEM, DIESEL

## Other bulletins for the same vehicles and component

- [B010224](/bulletins/11035496.md), 2026-08-03, Warranty extension: ENGINE. The EVAP systems purge \(vent\) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in\-service / delivery date.
- [B011325](/bulletins/11032733.md), 2026-05-18, Warranty extension: ENGINE. The EVAP systems purge \(vent\) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in\-service / delivery date.
- [B010324](/bulletins/11032731.md), 2026-05-18, Warranty extension: ENGINE. The EVAP systems purge \(vent\) valve limited warranty for defects in materials or workmanship has been extended to 15 years / 150,000 miles as determined from the original in\-service date.
- [B010224](/bulletins/11032730.md), 2026-05-18, Warranty extension: ENGINE. The EVAP systems purge \(vent\) valve limited warranty for defects in materials or workmanship has been extended to 15 years / 150,000 miles as determined from the original in\-service date.
- [B062626](/bulletins/11031897.md), 2026-05-01, Other: ENGINE. Inlet Hose Return
- [B061626](/bulletins/11029016.md), 2026-02-25, Other: ENGINE. Double Pipe Return
- [B011325](/bulletins/11024201.md), 2025-10-09, Warranty extension: ENGINE. The EVAP systems purge \(vent\) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in\-service / delivery date.
- [B010125](/bulletins/11022861.md), 2025-09-06, Warranty extension: ENGINE. The Exhaust Gas Recirculation \(EGR\) Cooler limited warranty for defects in materials and / or workmanship has been extended to 25 years without mileage limit as determined from the original first in\-service / delivery date.
- [B010520](/bulletins/11022852.md), 2025-09-05, Warranty extension: ENGINE. N47/N57 DIESEL ENGINE EGR COOLER REVISED EXT LTD WTY\(ELW\) COVERAGE/PROCEDURE
- [B010125](/bulletins/11021799.md), 2025-08-12, Warranty extension: ENGINE. The Exhaust Gas Recirculation \(EGR\) Cooler limited warranty for defects in materials and / or workmanship has been extended to 25 years without mileage limit as determined from the original first in\-service / delivery date.

JSON: [/v1/bulletins/10212788](/v1/bulletins/10212788)

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