Central Locking Works Until Delay Relay Times Out

[BigRik13]

Hi all,

 

Central locking in my 2000 late Mk1 Sharan has a pretty frustrating issue that I hope someone has encountered before.

 

Having repaired approx 15(!) cracked wires in the tailgate and drivers door gaiters, the central locking works perfectly until the accessory delay relay times out, for example, if I lock the doors and immediately unlock, all is fine.

However if I leave the car locked for more than 10mins, unlocking the door will not actuate the central locking. However, then when I physically open the door, all the doors will suddenly unlock.

 

Clearly a loose earth or a wire I've missed - if anyone can save me dismantling the doors again, I'd be grateful!

[BigRik13]

Turns out it was several corroded cables (someone's old, bodged repair) under the passenger sill plastic. The puddle under the footwell, that I hadn't seen before was also partly to blame. Clue came from some sudden wisps of smoke as I was driving. Never disconnected the battery so fast!

[chrispb123456]

I don't know about a bodged repair, this problem has appeared before, yet another inbuilt defect in the wiring loom.