2004 Audi A4 Quattro Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 Audi A4 Quattro

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Vacuum leaks, oxygen sensor failure, and catalytic converter efficiency faults can cause the Check Engine Light to illuminate.

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.

A problem with the torque converter can cause the Check Engine Light to illuminate.

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Wheels vibrate when driving at a high rate of speed. But the steering wheel doesn't vibrate.

I have a 2006 Audi A4 2.0 t and for some reason the turbo does not work. It also has a sudden lag while driving and does not go past 80 mph. Any ideas what's wrong with it?

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I bought the car new I had to bring it back to replace the radiator. Twice I had to have it towed back to the dealer because it would not start. The check engine light went on about three times. I had to bring it back to the dealer to find out why. It was bogging down from the stop on acceleration. All of those problems happened when it was still under warranty. After that I had to replace the ...

I love the Car (A4 Avant 3.0). Just bought it so time will tell. So far it's exactly what I was hoping for in an Audi. Unfortunately I have to get the timing belt service done soon. Very pricey on the 6 cylinder.

I have been in love with Audi's for a long, long time, but after having owned one, I would strongly advice against buying. It drives beautifully, but the maintenance related issues will drain you dry. In the past 5 years, I have spent almost $3,000 / year, not including replacing the engine for about $7k after a water pump failure at 65k miles. 3 years after replacing the engine, the water pump...

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