Electric Door Locks

I have electric door locks that aren’t working completely. All of the doors can be locked using the key-fob remote and from the driver’s side control. However, when I try with the remote only the driver’s door will unlock. The odd thing is that it works when the temperature is 10 degrees or below but not when it gets above that. This has been going on for about a year but hasn’t been a big deal because I’m usually the only one in the car. Any ideas?

As far as unlocking the driver side door only I think most systems work that way normally. You have to push the remote again to unlock the other doors. It is security function I think. If the other doors don’t unlock with the second push of the button then I would check the receiver for a problem.