Help with faulty electrics on passenger door
 

Hi i have a Chrysler grand Voyager 2009. Overall its mechanically sound but its decided to have a fault.

On a recent hot day the car was parked up next to our tent. We were camping and had the car open to unpack. All doors and windows were open. I decided to close the car up so put the key in ignition and began closing windows doors ect. However the front passenger window wouldn't close and the central locking to the door didnt work either.
the mirror wouldn't fold and then I decided to actually start the car to try nudge it into action but with that every warning light came on and the car began bleeping clouding refusing to stop! The car however ran fine. We made do and the next day I decided to take it home and swap cars so I could place this one in the garage safely as i couldn't get the window up or door locked. But when I drove it I have no speedo working and the loud beeping continued. I called a local mechanic out to it who said the issue was the passenger door. He disconnected the door fully from the electric system and all the beeping stopped and speedo worked. But air bag light remains on. Guessing this is because it now cant read if the air bag is working. But we cant get power back to the door at all. He tried for several hours but admitted he didnt know what was wrong as there is no frayed wires nothing is loose and over all the wiring is how you would expect. I'm at a loss of what is it that is causing the issue but the car is now running and driving fine but the passenger door has no power and the air bag light remains on. Has anyone had this and know what I am to do. I've phoned several garages one told me he wouldn't touch chrysler as they are money pits that will just give itself another problem fo everyone he fixes and the second said if the wiring looks ok to the mobile mechanic that I should just replace the door??
I really dont have hundreds to just spend on people looking at it to not fix it but I really need it sorted and just wondered if anyone had a similar experience so I can go to a garage and say it is this
side note. Prior to this but only very rarely when the door would open the wipers would activate but not every time I forgot to mention when this happened the wipers went on full and wouldn't stop! They dont do this now but I thought it might help diagnose it thanks in advance

Welcome to the forum. Why don't you try posting your question in the Voyager and Town & Country section of the forum where fellow owners hang out? You have posted where new members introduce themselves.