The lock within the door is 2 stage the extra couple of mm at the end when closing makes the difference for it actually locking.
Mercedes vito sliding door lock problems.
The dash switch only do lock but wont unlock the doors.
The main problem is that the door does not physically shut fully.
When locking the door the indicator wont flash as it should be but do 1 flash when unlocking as normal.
So sometimes it will not unlock remotely more importantly sometimes it will not lock remotely so i need to manually lock it inside first.
The electrics will not be connected until the door closes properly as the contacts are on the same end of the door that does not engage the lock hook correctly.
If so replace the fuse.
My vito had some central locking problem and fixed.
The physical lock unlock buttons work ok from inside.
Hi all my 2008 vito side rear door has decided it is no longer unlocking consistently with the remote lock unlock.
Check your fuse box first to determine if a blown fuse is keeping the lock from working.
The driver side sliding door and rear door wont lock or unlock by central lock.
My 2006 merc vito has 4 wires into the rear door locking mechanism.
Red black green and white.
If just one lock won t open on your mercedes then the problem may rest with broken wiring a bad solenoid or perhaps with a blown fuse.
You can try this with a screw driver shaft into the the receiver the u clasp engages with.
Push you see it catch push more you see it close a little further.
Left hand side id normal.
Be sure to unlock before you close the door again.
You will need to connect red and green wires door locks perfectly and open door light in dash is not illuminated.