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Electrical systemPart report

2005 Audi S4 Electrical system Problems

Complaints
5about this part
Share
12%of 43 total for the year
Median mileage
65,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 5 complaints about the electrical system of the 2005 Audi S4, 12% of the 43 complaints for this model year. Where a mileage was given, the median is 65,000 miles. 1 of these say a crash was involved, 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.

“As I was driving on the freeway my headlight went out with and the message, right dipped headlight came on. When this happen I stopped to fill up with gas and when I started the car the message was gone and the headlight was back on. This has happened a several more times since then.”

NHTSA complaint #10604899, filed 2014-06, 65,000 miles

“In august 2006 while driving my 2005 Audi S4 convertible on a busy street in bloomington, indiana at 45-50 MPH, my car died without warning...I.e. No power steering, brakes. I was able to navigate it off-road and then towed to royal Audi in bloomington, in. They kept the car over a month thinking maybe I needed a new engine. However, eventually they said it was a fuse which was replaced and the car drove fine. …”

NHTSA complaint #10191844, filed 2007-05, 10,000 miles

“Car started misfiring and within less than 5 miles in the highway then started to build up smoke inside the cabin, car then stopped and towed to a mechanics who confirm the diagnosis of misfiring of 3 cylinders and found overheating of the passenger side catalytic converter that lead to a melting a connector of the transmission.”

NHTSA complaint #10345903, filed 2010-07, 70,600 miles

“Heated seat element burned or melted the seat while the car was off overnight. Passenger seat leather is now separated, shriveled (hard as a rock) and would have burned the passenger if they had been in the seat.”

NHTSA complaint #10806322, filed 2015-11, 111,300 miles

“The contact owns a 2002 Audi S4. The instrumental panel does not display any information. The cluster symbols are broken. The dealer has not diagnosed the failure. The current mileage was 53,000 and the failure mileage was 35,000.”

NHTSA complaint #10204600, filed 2007-10, 35,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
20201588%
201416%
201326%
2012314%
201128%
2010610%
2007215%
2006413%
2005512%
200427%
20021045%
20014754%
20004934%

Other parts of the 2005 Audi S4

Exterior lighting
33 complaints
Air bags
4 complaints
Engine cooling
3 complaints
Visibility (wipers, defrost, mirrors)
2 complaints
Brakes
1 complaints
Engine
1 complaints
Fuel system
1 complaints
Seats
1 complaints
Steering
1 complaints
Transmission and drivetrain
1 complaints

← All problems reported for the 2005 Audi S4

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