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Electrical systemPart report

2003 BMW 5 Series Electrical system Problems

Complaints
4about this part
Share
27%of 15 total for the year
Median mileage
107,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the electrical system of the 2003 BMW 5 Series, 27% of the 15 complaints for this model year. Where a mileage was given, the median is 107,500 miles. 1 a fire, according to the filers.

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.

“Intermittent engine shut-down. Engine shuts off while vehicle is in motion at any speed. Engine failsafe warning light comes on. Vehicle must be stopped, key turned off and re-started. This is a serious safety issue that Bmw is aware of and has issued a related TSB. $2000 plus repair bill for a new engine wiring harness . Bmw should be recalling these vehicles.”

NHTSA complaint #10358224, filed 2010-09, 90,000 miles

“Car shut down while driving appx 35mph without warning, nearly crash due to loss of steering assist and instrument. Dealer replaced both dme and battery which was suspicious since two unrelated component failed at same time? Extremely dangerous when it happened in traffic, endangering both my passengers and other drivers nearby. Recall to the dme and battery should be issued. Repair cost $2500.”

NHTSA complaint #10453159, filed 2012-03, 108,000 miles

“While driving, the car suddenly shut down and lost all power. Had to pull over to the side of the road quickly to avoid an accident; had this been at high speed, the situation might have been worse. Subsequently when trying to start, the car shows a myriad of warning lights and faults. A fuse for the main computer (dme) had blown, due to a wiring short between the electronic thermostat and the main computer. Replacing the fuse is not a permanent fix, as it blows shortly after each time the car is started, rendering the car undriveable. …”

NHTSA complaint #10446867, filed 2012-02, 107,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
201167%
2010117%
2009225%
20081615%
2007323%
20061922%
2005419%
2004914%
2003427%

Other parts of the 2003 BMW 5 Series

Air bags
4 complaints
Latches, locks and linkages
2 complaints
Steering
2 complaints
Brakes
1 complaints
Engine
1 complaints
Engine cooling
1 complaints
Fuel system
1 complaints
Suspension
1 complaints
Tires
1 complaints
Transmission and drivetrain
1 complaints

← All problems reported for the 2003 BMW 5 Series

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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