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1999 Audi A6 Quattro Problems

Find the most common issues based on 1999 Audi A6 Quattro owner complaints.
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Most Common 1999 Audi A6 Quattro Problems

A problem with the torque converter 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.
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.
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1 Known 1999 Audi A6 Quattro Brakes Problem

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.

3 Known 1999 Audi A6 Quattro Drive Train Problems

A problem with the torque converter can cause the Check Engine Light to illuminate.
A fluid leak may develop from the propeller shaft seal on the rear of the transmission. Our technicians tell us that replacing the seal will commonly correct this concern.
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.

1 Known 1999 Audi A6 Quattro Electrical & Lights Problem

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

3 Known 1999 Audi A6 Quattro Engine Problems

The thermostat may erratically stick open or closed. The can result in illumination of the Check Engine Light and/or engine overheating.
The water pump may fail resulting in engine overheating and possible timing belt damage. Overheating and/or timing belt failure can result in very expensive engine repairs. As a precaution, it is ...
An External oil leak may develop from the valley pan gasket (under the intake manifold) and/or the head gasket.

1 Known 1999 Audi A6 Quattro Exhaust & Emissions Problem

Popping sounds from the rear of the vehicle may be heard moments after starting the engine, or when slowing to a stop. This noise is from the leak detection pump filling the fuel tank with air, and...

0 Known 1999 Audi A6 Quattro Heating & Air Conditioning Problems

0 Known 1999 Audi A6 Quattro Maintenance Problems

3 Known 1999 Audi A6 Quattro Miscellaneous Problems

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.
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 ...
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 c...

1 Known 1999 Audi A6 Quattro Suspension & Steering Problem

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 probl...

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Known 1999 Audi A6 Quattro Problems & Complaints

The thermostat may erratically stick open or closed. The can result in illumination of the Check Engine Light and/or engine overheating.
Erratic turn signal operation can be a result of a failing turn signal flasher relay which will require replacement.
A problem with the torque converter can cause the Check Engine Light to illuminate.
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 c...
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 probl...
The water pump may fail resulting in engine overheating and possible timing belt damage. Overheating and/or timing belt failure can result in very expensive engine repairs. As a precaution, it is ...
Popping sounds from the rear of the vehicle may be heard moments after starting the engine, or when slowing to a stop. This noise is from the leak detection pump filling the fuel tank with air, and...
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.
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.
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 fluid leak may develop from the propeller shaft seal on the rear of the transmission. Our technicians tell us that replacing the seal will commonly correct this concern.
An External oil leak may develop from the valley pan gasket (under the intake manifold) and/or the head gasket.
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 ...
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