Question about 2004 Audi A4

2 Answers

The keys for my car quite often won't lock or unlock the car, what can I do?

I have put new batteries in both keys and run through the process that is in the manual but random times they don't work. Does it make a difference what batteries you use? Once the key has gone in the ignition and the engine been turned on it will work again.

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  • Audi Master
  • 3,679 Answers

I would expect that the buttons on the remotes are a little worn and need to be pressed in just the right position for contact to be mase , if you open the remote fobs carefully reove the circuit board and you will see where the buttons press onto small switch's the under side of the buttons need building up with something , this bit is a bit hit and miss as it is only probaly a mm gap to fill so try slicing a piece of foam to about 1 mm and so it fits in the remote and refit the circuit board , put the cover back on and try buttons , as i say this can be a bit hit and miss but worth spending a couple of hours trying different flexible materials until the buttons work every time , good luck , keep me posted if you wish

Posted on May 04, 2015

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  • Audi Expert
  • 358 Answers

It's likely that the central locking module which is incorporated into the central locking pump in the trunk is faulty. Have it scanned by the dealer for confirmed diagnosis.

Posted on May 19, 2015

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Posted on Jan 02, 2017

j_del
  • 1586 Answers

SOURCE: central locking system stopped working

If the A6 layout for the modules is the same as my A4, the lock pump is in the rear corner of the car, on the passenger side. In the trunk, pull up the carpeting behind the passenger rear wheel, and tucked down in there is the pump assembly. They're known to go bad and it's a pretty likely cause for your problem, provided your fuses are not blown.

Posted on Aug 08, 2008

SOURCE: Audi a3 central locking 2003

Hi John.
Inspect the key fob for a place to open it and check for a battery.
Regards Johngee10

Posted on Aug 10, 2008

freetek
  • 5568 Answers

SOURCE: A4 steering lock does not engage and car won't turn over

The steering locks don't necessarily engage when the key is removed, I always turn the wheel before exiting to engage it. There are several positions that will allow the pin to lock in but if between these, it may seem that it isn't locked.

Posted on Aug 23, 2008

  • 34 Answers

SOURCE: Audi A6 Anti Theft Central Locking Tantrums

Sounds like you are having problems with your built-in alarm system. Like most systems in your Audi, you can read the error codes stored in the controllers. It takes a tool normally only a dealer has (VW or Audi) or an adapter like the VAG Com. (Google it)

I also think you can disable the alarm system and just use the key.

Could the lock button on your remote be stuck? Use a different key/remote. (leaving the suspect key at home.) The keys/remotes can be taken apart....

Posted on Sep 14, 2009

  • 1 Answer

SOURCE: audi A4 key will not come out after turning engine off

I had this as well, but you just have to wait a second. You can't remove it to quickly, the car takes a second to essentially unlatch the key.

Posted on Nov 08, 2009

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