So when I bought my 2004 A6 2.7t I lost the original key fob. I've been using the Valet Key ever since. I finaly bought a new remote and key and programmed it to my car. So the key lock, unlocks, panics, and opens the trunk. But when I try starting the car with the key it starts then turns right off and the orange key light begins blinking in the cluster. Now I hear this is an immobilizer problem. Is there a way to reset the immobilizer rather than having to go to the dealership? I hear there's a way through the ignition or the driver's side door lock.

 

Dealer's job only.
One fee for up to 6 keys, New code is obtained from Ingolstadt.
Remote function is described in the owner's manual - you have got it already.