Anyone came across this Central locking not working can open the drivers door with key but all the other doors wont open at all Customer in a panic he needs his tools out of the back Any help please

Has he turned key twice in lock to open other doors, only drivers opens on the first turn, just a thought.

Have a look in the o/s/r door gap between the door and body to see if you can see any signs of damage. Apparently by cutting the wires with a hacksaw blade unlocks the vehicle. Did one a couple of years ago.Would have thought on your van a modification would have been sorted by now though.
Mark M