Disco TD5 - Rear Door no longer unlocks from central locking....!? Help!

Hi there

I've got a new glitch on the TD5, and wondered if it's something I can fix myself...

In the last week or so, the rear door has stopped unlocking from the central locking - that is to say, either from the unlock from the remote key, or from manually sticking the key in the driver's door and unlocking the car that way.

All other doors unlock as they should.

The rear door can now only be opened by pulling the internal door catch from the inside of the car, so one of the kids needs to be reach over the top of the rear seats, pull the lever and the door catch pops up, so that the door can then be opened from outside - it's a real pain in the rear!

The rear door then locks as it should from the central locking - just doesn't open! I was going to guess at it being a solenoid, but was confused as to why it would lock, but not unlock (surely a duff solenoid simply would lock OR unlock??).

It would be dead useful if someone could identify what part I need to replace to fix the problem - would like to pop to the breakers and then fit it myself if at all possible....

Thanks in advance for any assistance to help get this niggle sorted!

it does sound like the locking unit motor

Hi Steve

Serviceable? Or get another one from a breaker and replace it? If it's the latter - is it a relatively straightforward pull out and plug in the new one type job?

rjsdavis said:

Hi Steve

Serviceable? Or get another one from a breaker and replace it? If it's the latter - is it a relatively straightforward pull out and plug in the new one type job?

Click to expand...

can you unlock it from the inside?
If so it's probably a lube prob.

Yes - as mentioned in my original post...

"The rear door can now only be opened by pulling the internal door catch from the inside of the car, so one of the kids needs to be reach over the top of the rear seats, pull the lever and the door catch pops up, so that the door can then be opened from outside - it's a real pain in the rear!"

Still think it's a lube issue?

Ifso, where should it be lubed?

not a 100% on this, but i think you can pry off the lr badge on the door handle/lock. then spray some wd40 or whatever to lube.

Ok - will give this a go. When the badge has been pryed off - does it need to be bonded back in place? Or is it just a "press fit"?

xat44 said:

not a 100% on this, but i think you can pry off the lr badge on the door handle/lock. then spray some wd40 or whatever to lube.

Click to expand...

I believe I'm right in saying that this method will not cure the OP's problem - it's a cure for the outside latch mechanism seizing up only.

Sounds like the OP's problem is more to do with the actual door lock motor itself and not normally serviceable - needs replacing.

thebiglad said:

I believe I'm right in saying that this method will not cure the OP's problem - it's a cure for the outside latch mechanism seizing up only.

Sounds like the OP's problem is more to do with the actual door lock motor itself and not normally serviceable - needs replacing.

Click to expand...

Thanks thebiglad - you are spot on. I've just been outside to do this, and you are right - it only gives access to the latch mechanism that actually opens the door - you cannot access anything that has anything to do with central locking mechanism at all - this appears to be completely concealed within the door.