C4 picasso boot issue.

[PT Blade]

Hi all.
2008 C4 picasso and the boot won't unlock.
Also the central locking won't lock the other doors either via fob or using the key. It makes a double click noise (lock /unlock? But only the doors not the boot)
So far I have....
reset fob.
Checked wireing where it runs through rubber sleeve in boot door. Looks OK

I have started to dismantle to get at swich.

My question is , will a defective swich cause total failure of central locking.
Ie all doors lock then unlock with a double click.
Windows don't auto close if I hold down the lock button on fob. Mirrors don't fold.

Am I right in suspecting swich ( it's a bit loose) or could it be something else?

TIA

[moizeau]

I saw this on a 207, it was the microswitch for the boot. It could also be that it thinks one door isn't closed properly.

[PT Blade]

Just been for a drive and the C4 thinks the doors are open and the rear screen is open!
I don't have a rear screen!!