Yes, the drivers door can not be opened with the key.

 

Does the cylinder turn with the key inside? If it doesnt, then you probably need to get that lock fixed. But if it does turn, but doesn't unlock/lock, then it's probably your vacuum pump. You can try pulling one out of a junk yard and putting it in, assuming you can get into your vehicle. You'll have to reprogram your keys for keyless entry, but if the problem is the vacuum pump then the key manually should open the door.

Do you hear anything coming from the car when you use keyless entry, or keyed entry? If the vacuum pump isn't the culprit, I would think that you would hear it trying to unlock/lock the doors.

 

The key turned but didn't unlock the door and no noise using the key less entry. Have had the car recover to the repairers to gain entry.
Thanks for the suggestions anyway.

 

Definitely sounds like it's your Vacuum Pump. They aren't very hard to replace and don't cost much if you nab one off an auto wrecker.

I could be wrong. It would be great to hear from someone who has more experience than me. But thats where I would start.

 

The key lock portion of the door actuates a white plastic rod that goes into the door lock module.

If it didn't get engaged properly or it was broken, that would just let the key turn and not engage the actual lock.

You can remove the lock portion without removing the door panel assuming you have the door open.

General area you will be working:
http://i196.photobucket.com/albums/a...DSCF0059-1.jpg

There is a small black plastic plug that needs to be removed so you can unscrew a small torx screw to release the cylinder.
http://i694.photobucket.com/albums/v...doorhandle.jpg

I apologize, but I don't know how to insert the actual pictures.

 

I also have the non functioning key fob. No second key anymore, no manual either, new battery. Does work manually but seriously so freaking annoying.

2008 Audi A4 Quattro 3.2 Turbo. Only 65,000 on it and completely customized so it's gonna be around for a good while.

 

If you have access to a VagCom, you can get the car to re-learn the keyfob, even if you have only one key.

I just got a used TT with only one keyfob and the buttons didn't work. I used my VagCom and the following instructions to get everything to work:

1. Go to module 35.
2. Go to 10 (adaptation).
3. Enter 00.
4. Then enter 21.
5. Click read.
6. Enter 1.
7. Click test. Should show 1.
8. After hitting test, you have 15sec to hold the unlock button for two seconds. Should show key learned.
9. Hit save. You are programmed.

 

2005 TT, will try the vagcom thing as I too only have one key. Hoped it was the battery in the fob, alas no!