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Engine coolingPart report

2004 BMW 7 Series Engine cooling Problems

Complaints
3about this part
Share
11%of 28 total for the year
Median mileage
39,914miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the engine cooling of the 2004 BMW 7 Series, 11% of the 28 complaints for this model year. Where a mileage was given, the median is 39,914 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.

“While driving at 45 MPH consumer heard a loud bang outside of the vehicle. Consumer pulled over and inspected the vehicle, but could not find a problem. A day later, the check engine light came on and remained on. Dealer found that the fender cover came off, and could be the cause of the check engine light being on.”

NHTSA complaint #10081631, filed 2004-07, 35,000 miles

“The contact owns a 2004 Bmw 745i. The contact stated that the engine would overheat and the vehicle would shut down and lose power. The safety mechanism in the vehicle would shut down if it sensed a failure with the vehicle. The failure occurred a total of three times while driving 40 MPH. On one occasion, she was able to drive to the dealer around the corner and the other two times, she had to have the vehicle towed to the dealer. The dealer could not diagnose the cause of the failure because the code was lost. …”

NHTSA complaint #10238847, filed 2008-08, 44,827 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
2006414%
2004311%

Other parts of the 2004 BMW 7 Series

Brakes
5 complaints
Transmission and drivetrain
4 complaints
Air bags
3 complaints
Electrical system
3 complaints
Fuel system
3 complaints
Seats
3 complaints
Steering
3 complaints
Visibility (wipers, defrost, mirrors)
2 complaints
Equipment
1 complaints
Exterior lighting
1 complaints
Body and structure
1 complaints
Tires
1 complaints

← All problems reported for the 2004 BMW 7 Series

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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