Hi all,

I recently purchased a 2009 Audi A4 2.0T. I just changed the battery in my key fob but I'm not sure how to reprogram the key fob with just one key. Can anyone give me some insight?

 

Are you talking about so the fob unlocks the doors?

Might try this:

Here is what the manual says:

1. Press the unlock button on the FOB
2. Insert key into ignition and turn to the on or accessory position (do not crank the engine or start the car)
3. Turn the key back to the off position and remove
4. Press either the lock or unlock button on the FOB to complete the reset sequence.

To start the car only the dealer can program.