How to Troubleshoot the Cruise Control on an Audi TT

Troubleshoot your Audi's cruise control.

The Audi TT is a two-door sports vehicle manufactured in Hungary. Many people use cruise control for longer drives. If your cruise control is not working, this guide will teach you how to troubleshoot the cruise control on an Audi TT. The steps will only take about an hour of your time and can be performed in the privacy of your own garage. This might spare you an unnecessary trip to an auto mechanic shop.

Things You'll Need

• Ignition key
• End wrench

Instructions

1. Pull up the fuse panel release lever to pull the fuse panel down and open it.

2. Look for the brake light and cruise control fuses using the diagram located on the back of the fuse panel lid. The problem could be simply a damaged or burned out fuse.

3. Check for a rough feel in the idling position and sucking sound coming from the engine bay. This means there is a vacuum leak -- a hole in the intake hoses that is allowing additional air into the system. This will adversely affect the cruise control.

4. Look at the throttle cable to see whether it is fraying or in disrepair, as either of these will keep the cruise control from controlling the throttle properly.

References

• "Audi TT Service Manual: 2000-2006: 1.8 liter turbo, 3.2 liter; including roadster and quattro"; Bentley; 2006