Key Fob problem - Not locking or unlocking
I have recently changed the batteries in the key fob and tried the re-sync option in the manual (I only have 1 key) as the key fob doesn't lock or unlock my Audi A3 2.0 Tdi 2004 model.
The key still unlocks the car when putting it in the key hole but the alarm will go off when enter the car and only goes off if I put the key in the ignition.
I noticed you can get a used key fob off ebay but I'm unsure on the part numbers.
Can anyone give any advice what the cheapest way to solve the problem?