D2 Central locking not locking.

Hi

For no apparent reason my central locking is no longer unlocking when I turn ignition off or when I reach the minimum speed for it to lock.

Also the central locking won’t lock on the fob although it sounds like it is trying to. Instead I get the alarm beep which usually means a door is open somewhere.

The locking and unlocking work when using the switch on the centre console so I am a bit confused why it doesn’t work.

Everything else works fine.

We have had a lot of rain last night and driving this morning.

I have changed the battery in the remote as a first step. I know everything is controlled by the BCU but that’s as far as I have got.

Any ideas where to start?

Key in lock has the same effect. At the moment I am therefore unable to lock the vehicle.

Hi, Interesting post as I wasn't aware the D2 had this facility. Sorry I can't be of any help.
Griff

Hi

1. Unplug the driver's door actuator and try o lock then with fob ..if it works for all the other doors that way withoit the audible misslock warning replace the actuator cos it means it's door monitoring switch is fubar, if still the same with the actuator unplugged we'll speak then

2. at which "level" from 1 to 10 can you consider yourself when it comes to electric troubleshooting if you have to follow a circuit diagram and do some circuit tests with a multimeter ?

sierrafery said:

Hi

1. Unplug the driver's door actuator and try o lock then with fob ..if it works for all the other doors that way withoit the audible misslock warning replace the actuator cos it means it's door monitoring switch is fubar, if still the same with the actuator unplugged we'll speak then

2. at which "level" from 1 to 10 can you consider yourself when it comes to electric troubleshooting if you have to follow a circuit diagram and do some circuit tests with a multimeter ?

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Thanks. I will try 1 in the morning.

As for 2 I would say 3/4. I have a multimeter but not an expert with it. Have used it to sort lights and motor issues on 1987 90 but that doesn’t take much skill.

sierrafery said:

Hi

1. Unplug the driver's door actuator and try o lock then with fob ..if it works for all the other doors that way withoit the audible misslock warning replace the actuator cos it means it's door monitoring switch is fubar, if still the same with the actuator unplugged we'll speak then

2. at which "level" from 1 to 10 can you consider yourself when it comes to electric troubleshooting if you have to follow a circuit diagram and do some circuit tests with a multimeter ?

Click to expand...

I unplugged the actuator and tried again. Sadly didn’t not change anything.

Too bad, it seems that it's not so simple then. Just confirm that when you use the fob you can hear some activity of the central locking system just that the latches do not react while the central locking works well from the dash switch ?

sierrafery said:

Too bad, it seems that it's not so simple then. Just confirm that when you use the fob you can hear some activity of the central locking system just that the latches do not react while the central locking works well from the dash switch ?

Click to expand...

That was right. However just gone out for a quick drive this evening and suddenly the central locking kicked in when I stopped and turned ignition off. Not sure if messing around with doors etc help but now back working. Very odd.

new to all this said:

That was right. However just gone out for a quick drive this evening and suddenly the central locking kicked in when I stopped and turned ignition off. Not sure if messing around with doors etc help but now back working. Very odd.

Click to expand...

Seems that the problem is with the driver's door actuator which has a weak contact within

sierrafery said:

Seems that the problem is with the driver's door actuator which has a weak contact within

Click to expand...

Thanks for your advice.

Do you think worth changing as a precaution?

new to all this said:

Thanks for your advice.

Do you think worth changing as a precaution?

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Your choice, you can change it now or later after it fails for good and i have the feeling that it will fail soon

sierrafery said:

Your choice, you can change it now or later after it fails for good and i have the feeling that it will fail soon

Click to expand...

Yes I suspect you are right. I’ll get one.

Before you buy the actuator check visually where the harness passes between the body and door cos i've seen cases cases when the wires were chafed there which can mix up the central locking and as you fiddled with the wiring it's possible that it affected that part ... better rule this out first