My auto locking system will make a sound like it is locking and unlocking whist driving how can I fix this?

There is also an issue with my back doors not autolocking anymore and also when I do use the fob to lock the front ones the lock and unlock so I have to lock manually. I can unlock with fob but only the front doors
It's not the fob as I changed that to a different one and still getting the same issue.

Any ideas.

Thanks

Ben King