# Service bulletin B170122

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: 10249425
- Published by NHTSA: 2024\-02\-01
- Manufacturer's number: B170122
- Manufacturer's date: 2024\-01\-29
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

The Check Control message below appears even though the coolant level is not below minimum when theengine is cold. Check Control message \(ID 166\): Top up coolant.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10249425-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10249425-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2017 to 2022 BMW X3
- 2021 BMW X3 HYBRID
- 2018 to 2024 BMW X4
- 2019 to 2024 BMW X5
- 2020 to 2024 BMW X6
- 2020 BMW X6 M
- 2019 to 2024 BMW X7

## Recalls for the same vehicles and component

- [2026331](/recalls/tc/2026331.md), 2026-07-08: Engine
- [2026040](/recalls/tc/2026040.md), 2026-01-30: Engine
- [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
- [24V576000](/recalls/nhtsa/24V576000.md), 2024-08-01: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ELECTRICAL SYSTEM:STARTER ASSEMBLY
- [23V294000](/recalls/nhtsa/23V294000.md), 2023-04-26: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR
- [2021711](/recalls/tc/2021711.md), 2021-11-19: Engine
- [21V598000](/recalls/nhtsa/21V598000.md), 2021-08-02: ENGINE
- [19V513000](/recalls/nhtsa/19V513000.md), 2019-07-03: ENGINE; FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP

## Other bulletins for the same vehicles and component

- [B121126](/bulletins/11037505.md), 2026-09-28, Service bulletin: ENGINE. Potential customer complaints with no fault codes stored / No MIL displayed. 1. “Rough idle after idling for a longer period of time” 2. “Vehicle feels like it is misfiring at idle” The automatic Start/Stop function is deactivated. The vehicle is stopped and the engine runs at idle speed. After prolonged idle operation \(approximately 30 to 50 seconds\), a slight jolt or slight change in idlespeed may be noticeable. There are no relevant errors in the DME fault code memory. No mixture control error, no misfiring, no error relating to a relevant component of the drive system. Motor vehicles affected: 1. Only MHEVs \(mild hybrid electric vehicle\) with crankshaft\-driven starter generator. 2. Only vehicles with optional equipment 01CE = recuperation system 3. Affected I\-levels: I\-level 24\-07\-500 or higher
- [B064426](/bulletins/11036436.md), 2026-08-28, Other: ENGINE. Air Flap Return
- [B064126](/bulletins/11036432.md), 2026-08-28, Other: ENGINE. Fan Return
- [B110723](/bulletins/11036377.md), 2026-08-26, Emissions: ENGINE. The return springs on the exhaust camshaft followers \(switchable rocker arm\) may break.
- [B110426](/bulletins/11035500.md), 2026-08-03, Service bulletin: ENGINE; ELECTRICAL SYSTEM. The manual starting of electronic engine oil level measurement from inside the vehicle, usually afterperforming an engine oil service task, is inoperative or it may lock up at between a 15% to 30% completionrate.
- [B011524](/bulletins/11035499.md), 2026-08-03, Warranty extension: ENGINE. The NVLD modules limited warranty for defects in materials and/or workmanship has been extended to 15 years / 150,000 miles as determined from the vehicles original in\-service / first delivery date.
- [B010921](/bulletins/11035498.md), 2026-08-03, Warranty extension: ENGINE. The NVLD limited emissionrelated warranty for defects in materials or workmanship has been extended to 15 years/150,000 miles as determined from the original in\-service date.
- [B010324](/bulletins/11035497.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.
- [B120326](/bulletins/11035396.md), 2026-07-31, Emissions: ENGINE. Due to an implementation error in various OBD diagnostics in the vehicle's control units, in very rare cases itmay happen that stored fault memory codes \(DTCs\) and the MIL \(warning light\) are not automaticallydeleted even though the underlying malfunction has already been rectified. This does not comply with the statutory OBD specifications.
- [B120626](/bulletins/11033035.md), 2026-06-01, Service campaign: ENGINE. DELIVERY STOP: VARIABLE VALVE TIMING

JSON: [/v1/bulletins/10249425](/v1/bulletins/10249425)

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