Central Locking Not Working

[Booldawg]

I have a Citroen Xsara Picasso '05 and the doors don't lock/unlock anymore using either the keyfob or manually turning the key in the lock.

I doubt it, but hope its something simple like a fuse.

Trouble is I can't find a fuse diagram anywhere online for my year and don't think I have the owners manual anymore.

I've seen a few diagrams for other models and it seems the central locking doesn't have a dedicated fuse, other functions such as interior lighting also run off this fuse. As my interior lighting is still working I'm kind of doubtful it's the fuse that's blown - but I won't rule that out until I've seen a diagram for my make/model/year.

[douglas9401]

Does the 'lock' button on the dash still work, Booldawg?

[Booldawg]

Good point Douglas - I will try it and report back. Wont be until tonight as the wife uses it for work. I don't drive it - just pay for it!

[paul1763]

i thought the reason there is a manual lock is in case the fuse or electrics fail. if it won't open with the key seems to indicate a linkage failure i wouldn't know if the key would open all or just the one door.

[murraymints]

this happened to us..albeit another car..it was a wire thing that had to be replaced..sorry don't know what it was called...ut it meant the door fascia coming off and some kind of wire being replaced

[Booldawg]

I'm guessing the manual lock is dependent on the central locking being in working order - as the manual lock opens/locks all 4 doors when you turn the key.

[TWR]

Try a new battery in the Fob / Key.

[Booldawg]

would that stop the car locking/unlocking manually though?

[bhg481]

Clearly nothing to do with the battery in the key fob since the driver's door unlocks with the key.
The usual system is for the driver's door mechanism to trigger the locking of the other doors electrically, so a fuse would allow the driver's door to unlock but the other doors wouldn't. There could also be an elecrical problem with the mechanism on the driver's door - water ingress causing a corroded connection/broken wire/swich burnt out etc. The fuse is the place to start and then take the lining off the driver's door and check the mechanism there.

[Baldric]

I don't know if Citroen do it, but a Number of cars I've owned have had a which does what list inside the cover of the Fusebox.
Why would you get rid of an Owners Manual?

[Dodger666]

There's a few discussions of Picasso central locking problems here:-

http://www.citroen-owners-club.co.uk/citroen/index.php?app=core&module=search&do=search&fromMainBar=1

[Dodger666]

I just tried my own link and it doesn't take you to the right page. Type "central locking problems" in the search box, that works OK.

[gingejbee]

Many years ago I had erratic central-locking caused by a poor connection
inside the rubber boot, between the door and door-frame. Some poking about and a spray of WD40 fixed it!

[Booldawg]

Had a chance to look at this myself tonight as the info I had was based on the long haired Generals testament.

On Douglas' advice I tried the in-car door lock button - this worked which proved to me the central locking was functional. When the wife said the doors wouldn't lock by manually turning the key in the door lock this was partially true. It wouldn't turn because of lack of use the lock was seized. Works fine on the passenger side. I've sprayed some WD-40 on the other lock. At least we can lock/unlock using the passenger side door lock.

The problem was with the lock button on the key fob. It unlocks OK so its not the battery. The button seems inoperable. At £150 a go we wont be buying a new key anytime soon! Thanks all for your advice.

[TWR]

Are we talking about a Peugeot Booldawg? If so I bought a 2nd off Ebay transferred the Innards from one & into the other, the reason, one of the Button's had snapped.

[Baldric]

First line of the OP,

///I have a Citroen Xsara Picasso '05///

[gingejbee]

....well, it's French isn't it?...

[TWR]

Did not notice that, the key will be near enough the same. there are some very clever people on here Gingegbee!