Preverbial Rear Doors Won`t Unlock

[bobbyb52]

Hi,got a 2002 1.8, got the usual rear doors won`t unlock.

Have sorted the n/s by tapping on edge of door whilst unlocking, removing panel etc and lubricating / checking, works fine now.

The o/s there is no central door unlocking / locking noise, got the panel off, removed the lock theft sheild but can not get any unlocking or any joy.

Any ideas ? is a fuse gone? is it garage job ?

 

Cheers

Bob

[Ronin]

Hi,got a 2002 1.8, got the usual rear doors won`t unlock.

Have sorted the n/s by tapping on edge of door whilst unlocking, removing panel etc and lubricating / checking, works fine now.

The o/s there is no central door unlocking / locking noise, got the panel off, removed the lock theft sheild but can not get any unlocking or any joy.

Any ideas ? is a fuse gone? is it garage job ?

 

Cheers

Bob

Hmmm There are some things you can do.

Manual check:

Make sure that the child locks have not moved out of position, It may sound daft but a lot of owners forget about them. Check to see if the plastic link to the door handles is loose or broken. Use a small telescopic inspection mirror (Maplins £3.00) and a torch to check if you can't reach or see it normally.

I've never tried this on a C5 but try using some pliers on the thick, stiff wire linkages and see if the move manually.

 

 

Electrical check:

Its always best to start methodically from the fuses and relays first and work your way through the wires to the solenoids.

Check the owners manual for advice on the fuses, relays and central locking. There is often a few hints and tips regarding the electronics in it. It could be a terminal loose on the relay or the relay isn't position properly. Never take relays at face value that they are fully working because all the rest of the doors are working ok. For the cost of it, replace it with a new one.

Check the wires into the cenral locking switch on the centre console. Have you fitted a new radio etc. that could have moved the wiring? Check the rubber flex that carries the cables to the door, is it split? This could be a sign that it has been caught and there could be a broken /split wire.

 

Beyond all that I would have to suggest an auto electrician as they can usually find the problem a lot quicker and cheaper(in labour) than a regular mechanic when it comes to central locking.

 

Try the basics above first though as I would hate to see an auto electrician charge you for something simple.

Let us know what happens please m8. :rolleyes: