2001 mercedes vito van tailgate lock will not turn. Removed assembly from door , can't see anything obvious

Question edited for a lot more clarity, and add maker.
Question moved to maker category.

These are all function of the Body Control Module. You need an auto electrician with a pro grade scan tool computer and access to factory technical bulletins.

https://www.google.com/search?q=mobile+auto+electrician+near+me

No clues in here.

Mercedes-Benz Vito / Viano (W639; 2004-2010) fuses

Fuse Box Diagrams https://fuse-box.info > mercedes-benz > mercedes-ben...
The fuse box is located in the engine compartment on the passenger's side. The location of the fuses in the engine compartment: Mercedes-Benz Vito / Viano.

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Try the Benz Forums. Sounds like overcharge spike.

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https://forums.mercedesclub.org.uk > vito-115-electrica...
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buy Electric parts for Mercedes-benz Vito bus (w639) 115 CDI in our ...

https://allparts.me > mercedes-benz > electric parts
Take a look at our selection of Electric parts parts for Mercedes-benz Vito bus (w639) 115 CDI. We provide a guarantee so that you can order with confidence ...

The first thing that need to be done here is to have the fault code(s) read that are recorded in the computer's memory (PCM) when this happens. Do not keep driving the car or you will damage the engine and/or the transmission.

I there is a lock cylinder in the driver's door or door handle of your Mercedes Vito then you will be able to unlock the door manually using the key. If you are having trouble with this then contact Mercedes and they will explain to you how to unlock it.

My personal suggestion would be to go for these repair catalogs.
I know this website reliable-store that i used to buy them from, and they sold online it was very good manual. Go ahead, I bet.
or try manualslife
both are good websites for repairing etc

with a code scanner

Hello and welcome to FixYa!

As a first course of action, I strongly suggest that you remove the positive battery connector and let it sit for atleast 15mins. before reconnecting it. This will reset the system and can get it back to it's normal operation.

Hope this helps and thank you for using FixYa! Have a good one!

Change the air filter,run some injector cleaner through it and check the engine breather system

i take youve changed the hand brake shoes in the disc as you say the cable, have you adjusted the shoes through the wheel stud hole.

there is away to switch off the rear doors from the front door but you cant single out a door.