Hello,
Until about a year ago the door/ignition key worked great, unlocking from far distances, but in the last year the key has pretty much failed completely to unlock the doors remotely.
I've checked or replaced the batteries but after a very short time back to failing to unlock the doors.

I'm stumped as to why this has happened, not sure if the key electronics fail over time, although it is the same problem on both keys and the spare key, which has not been used too much fails to unlock too.
Leads me to believe that it could be a problem on the actual car?
The battery has been replaced but ???

If any one can help, it would be much appreciated.

Thanks