A6 / S6 (C5 Platform) Discussion Discussion forum for the C5 Audi A6 and S6 produced from 1998-2004

Central Locking Problem.

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Old Jun 20, 2011 | 11:09 PM
  #1  
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Default Central Locking Problem.

I have a 2004 A6 2.4SE Avant, the remote key will not work either to lock or unlock the doors. I can open the drivers door manually with the key but all the other doors remain locked including the fuel filler. I can manually open the doors and when I then lock the drivers door, all the doors lock. When driving I also have a constant ticking noise from the dash, sounds like a relay. can anyone suggest what the problem can be and how to rectify the fault, thank you.

I have been reading on Audi Forums and wondering if it could be a control module under the passenger floor, it seems they are prone to leak around this module. Please can anyone advise where the central locking control modules are located
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Old Jun 21, 2011 | 04:24 AM
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i would look for a vacuum leak in the system. A disconnected hose perhaps?
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