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Engine coolingPart report

2003 BMW 745LI Engine cooling Problems

Complaints
5about this part
Share
10%of 50 total for the year
Median mileage
92,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 5 complaints about the engine cooling of the 2003 BMW 745LI, 10% of the 50 complaints for this model year. Where a mileage was given, the median is 92,000 miles. 2 recall campaigns on record are filed under a similar system.

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.

“11/09 driverside window regulator replaced;constantly replacing driver side turn signal bulb; in approx. March 2010 car would randomly not go into reverse and when I was able to get it into drive car would feel sluggish or when coming to a stop felt as if I was hit from behind or car would go into failsafe mode and I would be unable to accelerate, had diagnosed by Bmw was told 10k+ to have tranny replaced ; found a rebuilt tranny and replaced in approx. …”

NHTSA complaint #10418836, filed 2011-08, 109,606 miles

“I own a 2003 745LI, bought it certified used in 2006. I have so far had air conditioning problems, oil leaks, transmission failures and leaks, power window failure and so many electrical problems that they are too numerous to list. My car is literally in the shop once a month. As of july 2009 the vehicle has 63,000 miles and trust me, it has been maintained perfectly. It even passed a 160 point inspection for the ez care auto extended warranty and proceeded to break down 3 weeks later, how is that even possible? I paid close to 70k for a used vehicle. …”

NHTSA complaint #10277279, filed 2009-07, 49,000 miles

“There is a tube in engine that is secured with two o rings. The tube holds coolant. If the o rings fail, then the coolant leaks and the engine will overheat. There are multiple cases of this documented on the internet and it has occurred in my vehicle. Service representatives have indicated that this is a common problem that they see on 745's engines made before 2006.”

NHTSA complaint #10406807, filed 2011-06, 89,900 miles

“The contact owns a 2003 Bmw 745LI. The contact stated the vehicle was experiencing recurring failures in which the dashboard would display an engine malfunction message before stalling. The failures occurred after the vehicle was in operation for approximately 20 minutes while driving at any speed. After the failure, the vehicle would be pulled over and restarted. After some of the failures the vehicle would not immediately restart. …”

NHTSA complaint #10380056, filed 2011-02, 100,000 miles

Related recalls

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
2005416%
200413%
2003510%
2002411%

Other parts of the 2003 BMW 745LI

Air bags
11 complaints
Brakes
10 complaints
Transmission and drivetrain
8 complaints
Electrical system
7 complaints
Fuel system
5 complaints
Vehicle speed control
5 complaints
Tires
4 complaints
Engine
3 complaints
Equipment
3 complaints
Seat belts
3 complaints
Body and structure
3 complaints
Suspension
2 complaints

← All problems reported for the 2003 BMW 745LI

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