2004 BMW 645CI Engine cooling Problems
- Complaints
- 1about this part
- Share
- 9%of 11 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 2004 BMW 645CI, 9% of the 11 complaints for this model year.
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.
“2004 Bmw 645CI. Consumer states problem with vehicle stalling several times. An independent repair shop performed a diagnosis and codes for the camshaft sensor and solenoids appeared. The parts were replaced, however the stalling continued. The vehicle was towed to the repair shop and again and the mechanic performed another diagnosis and stated the problem was the idrive, but when he attempted to reprogram the idrive, it was determined the ccc and dme were bad and needed to be replaced.”
NHTSA complaint #10394508, filed 2011-04Related service bulletins
- 10147598Jan 1, 2015"SUBJECT N62TU: ISTA Service Function for DME ""RAM Backup"". The ISTA Service Function test plan should be performed to clear stored values in the DME RAM memory after repairs…
- 10022023Mar 1, 2009Crankcase ventilation system - cold climate conditions. *kb updated on 10/17/07. *nj updated 6/15/09.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2005 | 2 | 6% |
| 2004 | 1 | 9% |
Other parts of the 2004 BMW 645CI
5 complaintsSeat belts
4 complaintsElectrical system
3 complaintsBrakes
2 complaintsSeats
2 complaintsElectronic stability control
1 complaintsEngine
1 complaintsSteering
1 complaintsTransmission and drivetrain
1 complaintsWheels
1 complaints
← All problems reported for the 2004 BMW 645CI
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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