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Electrical systemPart report

2003 Volvo S40 Electrical system Problems

Complaints
3about this part
Share
17%of 18 total for the year
Median mileage
116,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the electrical system of the 2003 Volvo S40, 17% of the 18 complaints for this model year. Where a mileage was given, the median is 116,500 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.

“I returned to my car and found that I could not turn the ignition switch and as a result of the security system my car was totally inoperative. The car had to be towed to the nearest dealer, where it was diagnosed with a broken ignition switch, specifically the device that reads the chip in the key has failed and will not accept any key. Currently the car has been sitting at the dealer for over 4 weeks. Because the keys and switches are matched we cannot get an after-market replacement switch. …”

NHTSA complaint #10496925, filed 2013-02, 125,000 miles

“Prior to latest incident, the car had occasionally gone into limp mode, sticking in 3rd gear but drivable. That problem would go away after a day or so. Local shop couldn't find anything definitive. Bigger problem was yesterday evening's loss of throttle control and multiple electrical issues. Idle throttle setting (eg stopped at lights) became unstable, occasionally revving upto to ~2000rpm. Moments later on suburban divided main street, throttle stuck at ~2200rpm which meant I was doing 45mph (straight line) without any pressure applied to gas pedal. …”

NHTSA complaint #11066109, filed 2018-01, 108,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2011480%
2010111%
2009110%
2008425%
2007520%
20062441%
20051928%
20041123%
2003317%
2002519%
20011012%
20001311%

Other parts of the 2003 Volvo S40

Transmission and drivetrain
6 complaints
Fuel system
3 complaints
Suspension
2 complaints
Tires
2 complaints
Vehicle speed control
2 complaints
Engine
1 complaints
Engine cooling
1 complaints
Equipment
1 complaints
Other or unknown
1 complaints

← All problems reported for the 2003 Volvo S40

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