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Electrical systemPart report

2009 Audi A4 Electrical system Problems

Complaints
3about this part
Share
3%of 120 total for the year
Median mileage
44,598miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the electrical system of the 2009 Audi A4, 3% of the 120 complaints for this model year. Where a mileage was given, the median is 44,598 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.

“The car leaks oil. Audi of wilmington refuses to repair it. Purchased it in 2015 and have been trying to get repaired. Bought it from kia of wilmington along with a warranty that was never honored by either. Was told kia never registered the warranty. Also the car was sold with a lifetime warranty that no-one will honor. The driver door has a shortage and the defrost doesn't work. The alarm works when it wants to. I was told there is recall. Can you help”

NHTSA complaint #10985552, filed 2017-05, 44,598 miles

“On Sunday December 19, 2021, while driving home the warning light for the battery/alternator flashed on with an associated beep warning. An estimated 30 miles later all electrical and motor functions died while I was in heavy traffic. I was able to pull off onto a narrow shoulder up a steep hill and park. All functions quit, I could not come out of Park , the emergency brake switch would not release, the emergency flashers did not function. Nothing responded. I called AAA Towing service to be taken to an Audi service repair shop. …”

NHTSA complaint #11445328, filed 2021-12

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2023330%
2021327%
20209171%
2019330%
20181738%
2017611%
2016327%
2015316%
201439%
201328%
2012211%
201119%
201023%
200933%
200895%
2007105%
2006217%
20052411%
2004158%
20033215%
20027642%
20013527%
20001111%
1999116%
1998239%
19973334%
19962629%

Other parts of the 2009 Audi A4

Engine
44 complaints
Air bags
33 complaints
Steering
15 complaints
Fuel system
8 complaints
Other or unknown
7 complaints
Body and structure
6 complaints
Transmission and drivetrain
6 complaints
Visibility (wipers, defrost, mirrors)
6 complaints
Engine cooling
5 complaints
Suspension
5 complaints
Exterior lighting
4 complaints
Vehicle speed control
3 complaints

← All problems reported for the 2009 Audi A4

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