Luckily my v8 came with two key fobs, but only one was working.
I fitted a new key pad and batteries and then kept pressing the buttons until it started to lock/unlock .Checked the car started and all was well.
Yesterday, miles from home, the fekking fob chose to mess about . Just wouldn't unlock the car

. Locking was ok, but it just didn't want to let anyone in the car

Is this a common event for Jeeps ?
Eventually after mucho frantic button pressing it opened the car and we drove home .
Time for a new key fob ! The other fob is working fine so at least the system on the car seems fine.