A6 Avant Quattro Auto Central Locking Problem

[A6_Turbo_Diesel]

Hi All,

Got a bit of a problem developed over the last few days.

When I accelerate up above 10-15mph, the anti hi-jack auto locking locks all the doors as it has always done. However, when I drop below 10-15mph i.e. when I come to a junction or traffic lights, then accelerate back up again, the car tries to activate the anti hi-jack auto locking. I've done a vag-com scan and have the following error on the central locking module:-

Address 35: Centr. Locks Labels: 4B0-962-258.lbl
Part No: 4B0 962 258 K
Component: Zentralverrieg.,DWA D35
Coding: 07087
Shop #: WSC 00337

1 Fault Found:
01560 - Passenger Door
58-00 - Can't Lock - Intermittent

This error has been there for a little while - certainly longer than my anti hi-jack problem. And strangely, all the doors do lock every time!

I've checked the central locking module in the passenger footwell and the module and pod it's mounted in appear dry, although there was a little puddle of water where the cable enters the pod. I've dried the cable and the footwell of the car thoroughly, but still the problem persists? I must admit, I haven't taken the module out and removed the PCB to check for damage - that's my next job.

Apologies for the long posting - Can anyone shed any light?

Cheers, A frustrated Audi Owner.

[kenney]

When the vehicle is locked does the red light on top of the door trim blink?

[A6_Turbo_Diesel]

The red light definitely blinks when I lock the car with the key fob, but whilst driving - I'm not sure. I'll check tomorrow morning and post my findings.

[A6_Turbo_Diesel]

I can confirm that the red light on top of the door trim only blinks when the ignition is fully off (the key is out of the ignition barrel) and the car is locked with keyfob.

[kenney]

Delate the fault code and take a new reading

[A6_Turbo_Diesel]

Tried deleting fault code and all is ok. Took the car out for a spin, re-read the convenience module after a short drive and same fault is back. Cleared fault code again and ran the series of output tests on the module and the error code comes back.

[kenney]

There is obviously a fault with the door lock or wiring,pull back the rubber boot and check the wiring from the A pillar to the door,otherwise i would say you need a new lock

[A6_Turbo_Diesel]

OK, I've checked the wiring loom on the offending door from the door pillar to the lock actuator and the loom is fine. As mentioned previously, the error code in my previous post has been there for a little while, so I don't think it is that code that is causing the anti-hijack central locking to play up.

I've now got the convenience module out and there doesn't appear to be any water or condensation damage - the PCB looks in great condition.

Looks like it's on to check the looms from door pillar to lock actuator on the other three doors.