I can't lock doors with the fob or the button. Unlock; no problem; automatic lock; no problem; push button lock; problem???

The fob may need to be reprommed to the car. Do the following:

Grab your working remote. Push the LOCK button five times, allowing exactly two seconds to pass between each press of the LOCK button. Insert the ignition key and turn it to RUN. Push and hold UNLOCK on the working remote for 6 seconds. Push and hold PANIC for one second while continuing to hold UNLOCK. Release both buttons at the same time.
Push any button on the remote to program it. Then push any button on the remote that was already programmed. It has to be reprogrammed. The remote is now programmed to the vehicle. Turn the key to OFF.

Your door lock actuator have issues

Did you find a solution to this A's I have exactly the same problem

i would say the theft module saw the door trying to be open without the door lock or fob first, once the door lock button was pushed it shut down, it new doors were trying to be unlocked in a theft manner, once shut down it needs time to reset or needs to see ignition cycle with key and read chip in key, smart system isnt it, good luck.

if the passenger side works with the fob and the power button and not the diver it is def the driver door lock actuator.

get in your truck close all the doors put your key in the ignition push and hold your unlock button on the door panel turn the key on then off then on then off release the onlock button at this time the lock should cycle lock then unlock by them self if they did push and hold your lock and the unlock buttons on your remote at the same time for 15 seconds the lock should cycle agian and you are programmed

Your book should give you program options for the door locks If your fob wont work either you got a relay for the door lock bad it is located in the fuse panel push the door lock button and find the one that is clicking

I have an A4 and did this to re-program my key:

1. used the key to start the car...then turned it off
2. put the key in the driver door (door closed)
3. pressed the lock button on the key fob once
4. turned the key to lock the door.

This is basically the steps in the owners manual, but the car must be started with the key first, and the key must be in the door lock before pressing the lock button.

get in your car close door hit the unlock button then put key in the ignition cycle the key from off to on (STOP BEFORE START POSITION) cycle key off to on 7 times after the 7th trime the doors should lock the unlock automatically that means u are in trainning mode hit the unlock button on key fob. the key fob should now work if it doesn't then try changing batt