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Engine coolingPart report

2004 BMW 745I Engine cooling Problems

Complaints
2about this part
Share
8%of 24 total for the year
Median mileage
86,115miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the engine cooling of the 2004 BMW 745I, 8% of the 24 complaints for this model year. Where a mileage was given, the median is 86,115 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.

“My vehicle is displaying the exact symptoms described in your previous recalls (04v344000 and 03v240000). The car stalls and won't restart, check engine lights go crazy, transmission failsafe and stability control warnings come on, valvetronic desynchronization, ect. Went to a Bmw dealer and they denied either of these recalls existed. Called Bmw corporate and they said my car is not affected by the recalls, which is obviously not true considering the problems it has and the uncanny resemblance to your recall descriptions. Bmw has offered no assistance, can you?”

NHTSA complaint #10560824, filed 2014-01, 84,230 miles

“The contact owns a 2004 Bmw 745I. The contact stated that while driving at an unknown speed, the coolant light illuminated. The vehicle was then parked when the contact noticed that the vehicle was leaking antifreeze. After adding antifreeze, the fluids went right to the pipe and spilled onto the ground. The vehicle was then towed to an authorized dealer where they diagnosed that the water pipe was fractured from the radiator to the engine. The vehicle was not repaired. The failure and the current mileage was 88,000.”

NHTSA complaint #10449102, filed 2012-02, 88,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
200516%
200428%
200326%
200259%

Other parts of the 2004 BMW 745I

Transmission and drivetrain
11 complaints
Electrical system
9 complaints
Engine
6 complaints
Brakes
4 complaints
Air bags
2 complaints
Exterior lighting
1 complaints
Forward collision avoidance
1 complaints
Other or unknown
1 complaints
Seats
1 complaints
Steering
1 complaints
Wheels
1 complaints

← All problems reported for the 2004 BMW 745I

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