Passenger door lock

[Rammer 46]

Hi All

Volvo xc 70 2010

Can anyone advise please , I lock the doors using the fob, all doors locked
I then tried opening front passenger door and it opened without using the fob,
Why should it come open when all doors are locked , is there a fuse that controls the locking mechanism, very confusing

Regards

[V8XCV]

I guess the motor is jamming up and not actually pushing the locking mechanism all the way into the locked position when you press the lock button.

If you fancy replacing the lock yourself, excellent video here, https://youtu.be/vIZmJFqoDKk

otherwise you will need to get a garage to replace the lock.

[Rammer 46]

Hi thank you very much will study the video and let you know

Regards

Rammer

[Rammer 46]

Just found that both front and rear nearside doors will open after being locked,
would it be a relay that has gone ,, seems funny that both to be acting the same way

[apersson850]

It could be one passed away a long time ago, and now the other one followed suit. You just didn't notice when the first one died.

[Rammer 46]

this is getting ridiculous now and getting me in a spin, I find that after locking the doors , all doors will open,
Tried disconnecting the battery and leaving it 15 minutes but still the same,
Not sure where or what to look at now, surely all 4 door lock mechanisms would not pack up the same day?? is there a fuse or relay that controls them, as I dont have a hand book not sure any ideas anyone please

Regards

[37 RUBY]

Originally Posted by Rammer 46

this is getting ridiculous now and getting me in a spin, I find that after locking the doors , all doors will open,
Tried disconnecting the battery and leaving it 15 minutes but still the same,
Not sure where or what to look at now, surely all 4 door lock mechanisms would not pack up the same day?? is there a fuse or relay that controls them, as I dont have a hand book not sure any ideas anyone please

Regards

I'd still hazard a guess at sticking lock motors. They suffer water ingress and become seized. Very common.

If the position of one does not show correct position the system will most likely revert to a failsafe of unlocked.

The locks are controlled by the CEM ( Central Electronic Module). It's up under your glovebox. No relays to change.

There should be a DTC stored. Perhaps a read of codes with Vida would point you in the direction.

I suppose the well documented leaking windscreen that allows water into this unit could cause you an issue but you'd most likely have other unexplained issues. Put your hand under the passenger side carpet and see if it is wet.

Chap I know had issues on a V70 with driver side lock causing issues. For note he acknowledged that he uses a commercial car wash station that blast his car with a steam cleaner which I surmise forced water into places it shouldn't be.

I think there have also been cases of wiring harness breaks at the door hinge.

I'd still have a look at the locks first though.

[Rammer 46]

Hi thank you for that I will have a look and see , this has occurred since I had the seatbelt recall last Thursday also they washed the car after this service so will check for water ingress

regards

[Rammer 46]

I would just like to say thank you to all the input on this subject,
I have now sorted the problem,
Apparently I locked the car and took the fob key in to the house , then went back out and the car was still locked, I cannot say how this works but it must be the fob in the very near proximity that releases the locks when trying the door handle, not sure why this occurs cannot explain it
At least its sorted

Regards

Rammer