Wondered if any one knows a reason for the why the rear door would stop unlocking with the rest of the car ? :( It so annoyin any thoughts I would be very greatfull

My Drivers door sometimes does this, I thought some water may have got into the electrics. it seems quite random tho when it decides to do it. It was mainly when we had all that cold weather and snow :think:

I had this on my o/s rear door, as banzaiman says, think it`s down to water/condensation. I took the door panel off mine, and sprayed WD40 around, and it worked a treat...now my n/s rear door is playing up, so need to do that too.