A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

central locking system problems... help?!?!

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Old Apr 19, 2007 | 11:15 AM
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Default central locking system problems... help?!?!

1. monday morning - unlock car, drive to work. i live in maine, and we got hit with HUGE rain and winds, not sure if this has anything to do with it(thought maybe something got wet, shorted out).

2. get to work - try to lock car, doesn't do anything, thought batteries might finally be dead in fob(they've been weak), so i lock the door from the outside with the key(only driver's door was unlocked), and after work buy new batteries. key fob doesn't unlock car(no flashing lights, nothing at all), then i realize the lock/unlock button inside the car does nothing. i can still lock/unlock everything manually from the outside, but all electronic locking functions seem dead.

3. just checked fuses(it's been raining everyday until today, so i didn't open it up until now) and fuse #6, iirc - central locking fuse 5a, is fine. didn't see any other fuses listed in the manual that suggested any others.

so any ideas/input? thanks.
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Old Apr 19, 2007 | 11:34 AM
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Remove central locking pump, see if wet/submerged. Dry pump out, fix leak.
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Old Apr 19, 2007 | 11:45 AM
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Default that pump is located in the trunk right?

i just printed off the tech article for that, might be a saturday project. along with cleaning the sunroof contacts and changing oil, and maybe a nice wash if time allows.
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Old Apr 19, 2007 | 12:01 PM
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Default yes it's in the right side of the trunk. don't wait this out, it takes about 5 mins to get out pump.

and the tech article doesn't detail that u have to remove about 10 screws from the rear plastic panel to get it off, from the picture there it shows him removing one or two screws. anyway you gotta take this whole thing off.

oh ya and if you open the pump and remove the circuit board that's hanging there, see if your graphite thing is smashed, mine is.
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Old Apr 19, 2007 | 01:00 PM
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see writeup in sig
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Old Apr 21, 2007 | 07:07 PM
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Default Re: central locking system problems... help?!?!

Interesting. We got the same rain in New Hampshire and now my dome lights won't shut off ever (unless you manually switch them off) and the power windows won't deactivate until/unless you open a door. Open/close any door and the under dash lights go on/off as they should. All fobs and locking work fine. Any way to "reset" the centroal locking system?
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Old Jun 25, 2011 | 08:51 AM
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Default Take photos please

Can you guys post links to these repair manual docs you mention? Or even post photos of the pump for others?

Symptoms for my GF's 2003 Audi TT conv.
1. gas door won't pop
2. trunk won't pop
3. neither FOB does anything
4. rear storage box won't unlock (it's a very strong lock!)


I'll come back and post links if I find the doc the previous posters mentioned.
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Old Jun 25, 2011 | 09:29 AM
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Originally Posted by tc0nn
Can you guys post links to these repair manual docs you mention? Or even post photos of the pump for others?

Symptoms for my GF's 2003 Audi TT conv.
1. gas door won't pop
2. trunk won't pop
3. neither FOB does anything
4. rear storage box won't unlock (it's a very strong lock!)


I'll come back and post links if I find the doc the previous posters mentioned.
This is for the Audi A4, not the TT.Totally different animal.

A4 information would not be helpful at all, a 2003 TT is more similar to a Golf/ Jetta/ Beetle actually.
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