Audi A4 02 door wont lock.

After reading your complaint for the thrid time it occur to me that there is a disconnection between the lock actuator and the lock itself. Remove the door panel and activate while observing. There is a couple of screws that need tightening

If your car has keyholes to external the try this trick..obtain a tennis ball and cut a half inch circular hole into it...place the hole over the key hole of the drivers door..and punch or force the air out of the ball into the lock...you might need to try this several times...the compressed air can sometimes trip the central locking .....also try from the passenger door.

TRY UNLOCKING FROM PASSENGERS SIDE.IF OK CHECK CLUSTER LIGHT IF IT GOES ON WHEN U OPEN DRIVERS DOOR.IF NOT REPLACE DRIVERS DOOR LOCK.

check the fuses

Open door from inside and remove the lock. Check the outside handle lever rod for lost thread on the platic acivator or just for adjustment.

If it is cold enough the mechanism could be frozen. If not the actuator is gone and will need to be replaced.

You really need a dealer to reset the anti theft and key recognition.There are very few independent shop who can successfully do this .

It does sound like you also might have drivers door micro switch fault...very common as the vehicle gets older . Have the shop can for faults in the body module. It will store a code if the door micro switch is not working.

If you like reading about VAG vehicles and seeing how to fix problems, try a visit to www.VWVotex.com where you will find the VAG community sharing the fixes and problems on these machines.

no but you can get into trunk by removing passenger seat back. sounds like there is a bad lock lever or bad lock some audi's unlock trunk as soon as you unlock doors

More than likely your front driver door module has failed.  You will need to replace this module and readapt the key fobs for locking and unlocking

There's a TSB on that problem. It involves broken wires in the A and B pillar from the central convenience module to the rest of the car. Ask your VW dealership or what not for a more specific answer.