Audi A6, Central Locking unit problem..

[pakstar]

My audi A6 stood for 5 weeks in winter, after coming back from Abroad I noticed that central locking has stopped working as battery was also flat, but even battery was back on charge central locking unit won't work.

After reading the forums I realised that there is water under front seat's I went to mechanic, he drained water and dried central locking module but REMOTE central locking won't work. He finally replaced central locking module ,but still no joy, as remote central locking won't work even with differnt module also (maybe other used module also faulty).

Symtoms.
Remote CENTRAL LOCKING Stopped working after water sneaked under front seat and back seat.

Central locking inside doorbutton works fine when ignation is ON.
All windows works fine EXCEPT rear side rear window.. maybe cable fault ?
all lights in dash board works fine. Fan works fine, Climat control works
radio works fine, interior lights works fine, etc
Outside driver door manual locking works with central locking (Still REMOTE key won't work)

I tried to syncronise the key with differnt methods found on fourm but still not joy..


Solution?

1. HOw i can completely drain water if there is any more left and how to permanently stop water next time?
2. Is central locking unit can still be faulty when other related functions are working ok?
3. best way to dry the carpet..

anyone care to reply..

Many thanks in advance

[hman]

sounds like the drain holes in the plenum chamber (near where battery sits) are blocked and are allowing water to pass int o the car via other routes.

The convenience units are known for going faulty of this happens.

As for drying out your car, heat and air movement is what you need (once you've stopped any more water coming in) .

Previously I've used an electric heater (convection or fan will do) and left all the windows open a crack to allow the damp air to escape.

Obviously prior to this you will want to get as much water out of the carpets by using a wet vac (or using the vac at a car wash..).

If the water is really bad you may want to remove the carpets and let them dry but thats an interior out job and you may end up with shrinkage of the carpets making re-installation interesting.

As we are currently enjoying a heat wave (!) perhaps driving everywhere you go with the heaters on full hot and set to heat the floor with your windows open a crack would be a way of getting the moisture level down whilst you are not near a power socket for a heater.

Your feet will get very hot though!

[pakstar]

Thank you for drying techniques..

how about my central locking unit, does it require chaning? as it seems that other related functions working fine (plz read my first post)

also whats the best way to syncornise the remote fob key, if i change centrol locking unit..?

thank you

[hman]

I dont know about the actual unit itself nor the keys, I think you may need to talk to an audi technician....

[Eegs]

Sorry, I don't have a solution but we have an identical problem with our 1998 A6 Avant. A recent downpour resulted in water pouring into the nearside passenger footwell. In hindsight, the problem had been there for a while as I had noticed some condensation in the car previously. As the other correspondent says, the garage reckon drain channels have become blocked over time, resulting in the overflow. Parked on a slope the water was a few inches deep! A wet vac and keeping windows open in the garage over night is drying it out. However, central locking no longer working - I had been hoping that this would come back as the car dried out....I also need help, although as the car has done 125000 miles, major expense is not an option.

Otherwise the car is running beautifully.

[formeraudifan]

Many VW and Audi models seem to have a common problem of plenum chamber flooding due to bad drainage design. Following a recall I got a refund for replacement of the servo but not for replacement of the (in)convenience unit (yet). You might want to try contacting VW or Audi about a recall.