2017 2.3 Ducato sliding door

[olley]

How do you lock it with a flat battery?

 

[RustyRuss]

The passenger door has a 10mm hole on the inside just about same height as external door handle, you can stick a screwdriver in it and flick the lock mechanism up to ensure the door’s locked when you shut It. I bet there is something similar on the sliding door, it might be at the lock end though and not at the door handle... Internet will probably help you.