Hi new here and hoped that you may be able to assist.

I have a 1999 Focus 1.8 petrol zetec The central locking has just
stopped operating. I have always used the remote key (with three
buttons) but it now refuses to operate. Secondly when you use the key
manually the only doors that open are the offside ones. The near side
doors remain locked. Once inside the remote boot button on the dash does
not work, although it will open with the key.

I have a second key that does not have any buttons and that key has a
blue section on the head of the key. If I unlock the car with this I get
the same results.

Any suggestions or ideas would be gratefully received.

Many thanks