2004 Audi A6 Quattro Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 Audi A6 Quattro

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2004 Audi A6 Quattro Problems

ABS Light Due to Control Module Failure

The anti-lock brake system (ABS) control module may fail causing the ABS light to illuminate. Failed modules should be replaced to restore ABS operation.

Digital Display on Instrument Cluster May Fail

The digital display portion of the instrument cluster may fail. Our technicians tell us the entire instrument cluster will need to be replaced to correct this concern.

Check Engine Light and/or Engine Overheating Due to Failed Thermostat

The thermostat may erratically stick open or closed. The can result in illumination of the Check Engine Light and/or engine overheating.

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2004 Audi A6 Quattro Questions

ESP light on (1 answer)

comes on while driving

EPS light on (1 answer)

EPS light comes on while driving. usually when i come to a stop

My car blew a water hose and automatically shut down. now it won't start. (1 answer)

While driving the low oil light came on. And then the hose blew. The car shut down and after filling it with oil and repairing the hose, now the car won't start. Not even turn over. The EPC light is on as well.

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2004 Audi A6 Quattro Reviews

Some plastic fittings on the front passenger seat have failed. Several painted surfaces on the headlight switch, mirror switch and heating and A/C controls have worn off. The radio on/off button has come off. The front suspension needs relatively frequent repairs. The roads are terrible around here. Water pump and oil cooler replace at different times. The latter repair VERY expensive.
i love my a6

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