A5 trunk release will not operate via button, fob or on door button. help!

 

You likely hit the valet button in the glove box... check it out...

 

HAD the same problem with my A4, Maybe this will help. If there is a wire harness that comes from the trunk lid then into the body on the drivers side then there is a possibility that the wires in this harness are broken, Symptoms are: 1. release button in the drivers door pocket will not open the trunk. 2. remote will not release the trunk. 3. Access is only available with the key.
Also: 4. License plate lights are not working. 5. trunk courtesy lights not working.
There are individual wires for each of these functions ( total of 6 plus one ground wire.) and they have a tendency to break or the plastic covering on the wires are compromised and may short out. This is due to the flexing of the wires in the rubber covering of the wireharness where it exits/enters the body. Check fuses and if they continue to blow then your wiring is compromised.
Broken wires can also be the problem of why mirrors and windows do not work from the drivers side as there is also a rubber conduit cover from the door and the car body.
Easy to fix if you have the patients. It will require removal of the trunk liner and the trunk liner on the drivers side of the body.
If you need more info then contact me davidv2w2b4@yahoo.ca please no solicitations.
Dave