1999 Audi A8 Quattro Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1999 Audi A8 Quattro

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1999 Audi A8 Quattro Problems

Various Probelms Caused by Clogged Plenum Tray Drain

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.

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.

Check Engine Light Due to Faulty Torque Converter

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

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1999 Audi A8 Quattro Questions

Where is the plug located in the vehicle that would release the water? (2 answers)

As many others on this site, our Audi has started filling up with huge amounts of water when it rains....and dumping it on our feet and out the rear a/c vents etc. The plenum tray is clear....but we have been unable to locate the plug to release the water that is sloshing and gurgling around con...

Does the oil plug need to be replaced each time I have the oil changed? (1 answer)

The car has been leaking oil ever since we had it changed. I know that in some cars the plug has a compression seal that's a one time use. Is this the case with the Audi?

Where is the iat sensor connector located on my car?? (1 answer)

1997-1999 audi a8 quattro
4.2 iat sensor
ecu

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1999 Audi A8 Quattro Recalls

Recall 08V397000
VOLKSWAGEN IS RECALLING 13,900 MY 1996-2003 AUDI A8 VEHICLES EQUIPPED WITH A 5-SPEED AUTOMATIC TRANSMISSION. THE LOCKING CABLE MAY MOVE OUT OF POSITION OVER TIME. WITH THE LOCKING CABLE OUT OF POSITION, THE SHIFTER CAN BE MOVED OUT OF THE "PARK" POSITION EVEN IF THE IGNITION KEY IS NOT IN THE I...

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1999 Audi A8 Quattro Reviews

Rated
based on 1 customer reviews
Bought my "dream car" from a dealer in Cleveland. Two weeks after, the transmission needed to be rebuilt (later found out that the tranny in the car was a refurbished one from some time ago). This is a Z type tranny which I now know is one of the most complicated trannys out there. One year after rebuild ($4200), the SAME issues happened again. Transmission shop now says the sensors inside are ...

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