central locking madness

Needs to get out more Joined: Jan 07, 2014 Posts: 107

Ok my central locking has gone mad keeps opening then locking, making getting in the car a task, l know the pump is behind me in the quater panel, so will be my first port of call, but my question is is there another control modual anywhere else??

Posted: Tue Oct 28, 2014 8:01 pm

what car? my suspicion is B4 80 saloon? boot wiring loom would be the first place i'd look.

Needs to get out more Joined: Jan 07, 2014 Posts: 107

Ah yes sorry it's a coupe, pulled the panel off and retrieved the pump but no water damage and could not see anything wrong with it, cleaned the tiny plug pins with 800 grit and refitted but no difference she just locks herself soon after opening sometimes straight away sometimes a few seconds later....going to try a new(second hand) pump unit. Pulled the fuse for the time being.

Posted: Wed Oct 29, 2014 7:39 am

look at the boot wiring next to the hinge, where it bends.

Needs to get out more Joined: Jan 07, 2014 Posts: 107

But on the coupe the wiring for the locks etc is in the body the only wiring going into the hatch is for the wash wipe.

Audi Nut Joined: Aug 14, 2012 Posts: 56

if its a coupe you have 2 doors. just disconnect it and reach over to unlock the passenger door. old school car with old school spec Smile

Needs to get out more Joined: Jan 07, 2014 Posts: 107

Ha Ha very funny !! Laughing

Site Moderator Joined: Jan 31, 2003 Posts: 9144

it uses vacuum does it not in each door.

Sounds like there isn't enough vacuum to activate the actuator for opening the door and it just closes again.

Think you may have to remove the door cards and check the vacuum hoses.

Needs to get out more Joined: Jan 07, 2014 Posts: 107

the vacume seams to be ok because when they are locked they stay locked and the pump does not keep going, it just unlocks and then relocks its self when you try to open the door with the key, although sometimes it will unlock and then it will be maybe a couple of mins and the car locks its self again so l thinks it's electrical, so going to get another unit and try that first.

Posted: Wed Oct 29, 2014 7:31 pm

But on the coupe the wiring for the locks etc is in the body the only wiring going into the hatch is for the wash wipe.

Needs to get out more Joined: Jan 07, 2014 Posts: 107

when you unlock the light goes on then goes off when the car locks its self, it has a laserline remote cl and alarm but that is ok because l have turned it off and the problem remains also the alarm was still dis armed when the car locked its self.

Audi Nut Joined: Aug 14, 2012 Posts: 56

Third party alarms are the devil.

It will be a vacuum issue, check you don't have a pipe squashed or burst somewhere.

Disconnect all electric sensors, try it again, if the problem stops, electrical, if it continues, vacuum