2021 BMW X6 Engine cooling Problems
- Complaints
- 1about this part
- Share
- 14%of 7 total for the year
- Median mileage
- 53,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 2021 BMW X6, 14% of the 7 complaints for this model year. Where a mileage was given, the median is 53,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2021 BMW X6. The contact stated that upon start the vehicle, the drivetrain message was displayed. Overtime, the contact stated that the vehicle either failed to start or was slow to start while depressing the START/STOP button. The vehicle was taken to a dealer and the starter was replaced; however, a month later, the drivetrain message returned. Additionally, the contact stated that while reversing out of a parking space, the vehicle shut off while in reverse(R). …”
NHTSA complaint #11698929, filed 2025-11, 53,000 milesRelated service bulletins
- 10252038Mar 4, 2024Check Control message (CCM) indicates: (ID 213): Stop, exercising due care. Voltage supply The Service Engine Soon light is on with the following DME Fault Code: 21B209 - Starter…
- 10249425Jan 29, 2024The 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.
- 10245367Nov 9, 2023Check Control message (CCM) indicates: (ID 213): Stop, exercising due care. Voltage supply The Service Engine Soon light is on with the following DME Fault Code: 21B209 - Starter…
- 10242884Sep 20, 2023The engine malfunction warning is illuminated and one or more of the following faults are stored in theDME: 034D63 - Exhaust switchable cam follower, system: continuous…
- 10242887Sep 15, 2023Due to an assembly ase ventilation line connections may not be securely locked.
- 10242886Sep 15, 2023Due to an assembly ase ventilation line connections may not be securely locked.
- 10242688Aug 1, 2023?A software error may cause an unwanted pressure pulsation in the transmission during a "Remote Engine Start."
- 10238073May 1, 2023DSCi units which potentially have a faulty hydraulic valve were installed in the vehicles. The affected units may activate a sporadic red-colored Check Control Message.
- 10230724Dec 1, 2022Coolant leaking from the engine compartment. Traces of coolant leaking from the expansion tank of the low temperature cooling system.
- 10225107Sep 1, 2022Coolant is leaking from under the car which is equipped with the S63 engine. A low coolant warning might also be displayed (CC Message ID166).
Engine cooling: other model years
Other parts of the 2021 BMW X6
2 complaintsElectrical system
2 complaintsForward collision avoidance
2 complaintsAir bags
1 complaintsBack-over prevention (rear camera)
1 complaintsLane departure
1 complaintsOther or unknown
1 complaintsSteering
1 complaints
← All problems reported for the 2021 BMW X6
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology