Remote locking

[Rolty84]

Ok so the original suddenly giving up could be a faulty part in the BSI like a CL relay, or the antenna in the comm2k unit in the steering column.

If you have no way of tracing the fault it may have to be aftermarket but have never tried to fit a system on top of an existing system. You will find kits on eBay and might be able to wire them to the door solenoids.

If the doors all lock from the driver's door using the key blade, the BSI should be fine. Next would be to code the new remote to the BSI using DiagBox - that's the way it would have to be done. If you think about it, there's no connection between the start transponder and the RF remote, and the van has to be told that this is a valid remote....or any old remote would open your doors. It's not logical to expect a plain new board that's never been coded to the van, to operate the locking.

No I completely understand the new board not working with the car.
Where's best to buy the diag software needed?
Don't mind investing in it as by sounds of it comes in very handy and I have no plans on getting rid of my berlingo anytime soon.