C/locking & E/windows stopped working?

[Scotty306]

I think i've got a problem with the drivers door electrics.

every now and then i find that the central locking & electric windows stop working.

When it happens the locks wont operate with the fob and with the key it's very heavy and just does the one door.
Also none of the windows will move using any of the buttons.
The door mirrors always work though?

Then suddenly all will be ok again, which makes me think it's linked to movement in the drivers door (perhaps a short or a break in a cable?)

It's started happening more frequently now and I can't really risk leaving an S4 unlocked!

Hopefully someone's got some ideas so i can isolate the fault and fix it on the cheap

[tartan_rob]

I'm no expert around this but I'd go for an earth. Best to wait until it fails completely if so, but be very careful when using the car....

[Scotty306]

Luckily the doors will lock by manualy pushing the door pins down,
but there's an unhealthy resistance when i do this and i'd rather not cause any more damage!

Unfortunately there's no way of manualy lifting the windows! so they're staying firmly shut 'til i cure the fault

[eddiecrawford]

managed to get fault codes read?

there have been problems with "comfort module" (!) in drivers door, connections etc, but usually this opens all the windows sometime after you have left the car, cure, fix connection/replace unit £100, might be worth looking at connections into it. who puts something like that inside a door???

[Scotty306]

Comfort module eh?, looks like i'll have to take the door apart and have a look.

'fault codes' hmm, i'm having a bit of a struggle getting Vag com to comunicate properly but i did manage to get one rather nasty looking scan today i'll attach it

Code: Select all

VAG-COM Version: Release  311.2-N


Chassis Type: 8D - Audi A4 B5
Scan: 01,02,03,08,15,17,25,35,45,55,56
 
Address 01     -------------------------------------------------------
   Controller: 8D0 907 551 C  
   Component: 2.7l V6/5VT         0002
   Coding: 05711
   Shop #: WSC 00000
5 Faults Found:
18057 - Powertrain Data Bus: Missing Message from ABS Controller
            P1649 - 35-00 - -
17865 - Exhaust Gas Temp Sensor 2 (G236): Open or Short to Plus
            P1457 - 35-00 - -
17862 - Exhaust Gas Temp Sensor 1 (G235): Short to Ground
            P1454 - 35-10 - - - Intermittent
17870 - Exhaust Gas Temp Regulation for Bank 2: Implausible Signal
            P1462 - 35-10 - - - Intermittent
18010 - Power Supply Terminal 30: Voltage too Low
            P1602 - 35-10 - - - Intermittent
Readiness: 0000 0000

Address 03     -------------------------------------------------------
   Controller: 8E0 614 111 A  
   Component: ABS/EDS 5.3 QUATTRO D00
   Coding: 0273004284  
   Shop #: BB 24334
No fault code found.

Address 08     -------------------------------------------------------
   Controller: 8L0 820 043 D  
   Component: A4 KLIMAVOLL
   Note: Excessive Comm Errors

Skipping Address 15-Airbags

Address 17     -------------------------------------------------------
   Controller: 8D0 919 930 K  
   Component: B5-KOMBIINSTR. VDO D13 
   Coding: 04462
   Shop #: WSC 00000
   IMMO-IDENTNR: AUZ7Z0W0642457       
No fault code found.

Address 25     -------------------------------------------------------
   Controller: Bitte Adress
   Component: e 17 eingeben          
No Faults Found
  or DTCs not supported by controller
  or a communication error ocurred

Address 45     -------------------------------------------------------
   Controller: 4B0 951 173    
   Component: Innenraumueberw.    D03
   Coding: 00102
   Shop #: WSC 06325
1 Fault Found:
01381 - Alarm triggered by Anti-Theft Sensor: Rear Right
            35-00 - -

Address 55     -------------------------------------------------------
   Controller: 4B0 907 357    
   Component: LEUCHTWEITEREGLER  D001
   Coding: 00004
   Shop #: WSC 06325
No fault code found.

Address 56     -------------------------------------------------------
   Controller: 
   Note: Can't Synch Baud Rate

End   -------------------------------------------------------

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[Scotty306]

I've also just noticed that the interior lights & door lights don't come on any more!
although the dash will light up to show the mileage each time any of the doors are opened.

[philipwalker]

Sounds like the central locking pump unit in the boot. This controls the windows, key functions and the central locking.

The unit often fails due to water leaks from the o/s rear lamp, replacements are around £250 from your dealer.

[tartan_rob]

You appear to have a few engine related issues as well......those faults will keep you busy for a while....

[eddiecrawford]

are these new fault codes? the dealers simply wipe them and see if they recur after a short drive.

[Scotty306]

are these new fault codes? the dealers simply wipe them and see if they recur after a short drive.

It's the first time i've hooked up the vag com so hopefully they will go away for a while!


As for the locks & Windows fault, it's definately the cl pump in the boot.
(Good call philipwalker)
After a 'wiggle' on the cable connector the problem has gone away.
I guess it's down to me trying to store too much of my junk in there with it.

At least if it happens again i know where to look, suppose i might have to re-make the plug one day.