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Problems for specific Audi A6 years:

Car problem reports

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Newest reported 2004 Audi A6 problems

 

Verified for the Audi A6

Fuel quality must be maintained to avoid engine misfire problems; the misfires may cause the Check Engine Light to illuminate.

6 Reports
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Verified for the Audi A6
Oil leaks from the camshaft drive pulleys and variable valve timing hydraulics are common. If the variable valve timing hydraulics is leaking, the Check Engine Light may illuminate from inaccurate valve timing.
4 Reports
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Verified for the Audi A6

Premature wear in various multi-link suspension components can cause noises that are difficult to diagnose. Worn suspension parts can also cause uneven tire wear and create steering alignment problems.

20 Reports
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Verified for the Audi A6

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

28 Reports
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Verified for the Audi A6

Clogged sunroof drains can allow water to enter the interior and accumulate under the carpet where various control modules are mounted. Over time, the accumulated moisture can damage the control modules.

8 Reports
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Verified for the Audi A6

Clogged drains can allow rainwater to accumulate in the plenum tray (at the base of the windshield). The water may leak into the vehicle's interior, brake booster, or electrical components, which can lead to major problems. Our technicians recommend keeping the tray clear of leaves, pine needles, and other debris.

15 Reports
Me Too

Verified for the Audi A6

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.

10 Reports
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Verified for the Audi A6

Erratic turn signal operation can be a result of a failing turn signal flasher relay which will require replacement.

10 Reports
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Verified for the Audi A6

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.

31 Reports
Me Too

Verified for the Audi A6

Our technicians recommend having the constant velocity (CV) boots and CV joints inspected at each service. Servicing torn CV boots early can prevent the need to replace the CV half shaft or CV joint.

16 Reports
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