Erratic turn signal operation can be a result of a failing turn signal flasher relay which will require replacement.
Resources for the Repair and Maintenance of your 2003 Audi TT Quattro
2003 Audi TT Quattro
2003 Audi TT Quattro Problems
Vacuum leaks, oxygen sensor failure, and catalytic converter efficiency faults can cause the Check Engine Light to illuminate.
A creaking type noise may be noted from the front suspension. Replacement of the front sway bar may be required to correct this issue.
An ignition coil or spark plug may fail unexpectedly resulting in an engine misfire and possible illumination of the Check Engine Light.
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 recommended to inspect the timing belt and water pump at regular intervals.
2003 Audi TT Quattro Questions and Answers
I just bought a used 2003 Audi TT Quatro with 33,000 miles. Homelink is not responding. When any of the 3 HL buttons are pushed, the LED light does not come on. It seems like it forgot it has Hom...
Purchase my 2003 Audi Quattro TT in June 2010 and took it to the local Audi dealer to look it over. Been taking it there for problems since. They never looked at my timing belt or recommended tha...
The spring is cracked and needs to be replaced.
The sound starts as soon as I turn on my car and seems to vary if I accelerate or apply the brakes. Brake pads are good. It sounds like air rushing out of a tire.
could it be a failed relay if so where are they on the car
2003 Audi TT Quattro Reviews
Love my tt,but can anyone tell me what is wrong with it? It has a banging sound which only makes a noise in 1st gear on acceloration.It sounds like it is coming from the front driver's side wheel.It is not the gearbox,could this be a strut top mount or a bush of somekind.It has been to the garage and they are having difficulties in finding the problem.I have been told that everything is fine,obviously not as i can feel the knock through the footwell.
Regards M Rogers
2003 TT Quatro 6 speed manual: Headlight low beams occasionally don't work. Replaced both balast & both bulbs ($300 parts); lights still don't work regularly. Dash indicator shows headlight out when they're both working. Can't seem to fix this headlight problem - got pulled over several times for no headlight(s). Often try to start engine & alarm goes off. At 115k miles the shifter fork broke inside manual transmission leaving the car stuck in first gear; $2,500 repair at local shop.
This car is one of the best bang for your buck. My friends call it a Poor man's Porsche...It is well designed, well executed and well balanced. After driving alternatives, I cannot find a vehicle that drives as well, parks anywhere, and is good on gas. I average approx 24MPG.