Hi,have signed up for help as i'm stuck trying to cure my CL problems

Symptons are:

CL does not work,drivers lock with key does not work,passenger lock with key works ok.
Unplug CL control unit for an hour and CL works fine,drivers lock key works fine.
Next day symptons start to kick in again.
Take out battery in key fob/clean terminals all works fine again,next day symptons come back.
Tried replacing battery in key fob,same results.

(Alternater/speedo sensor playing up aswell but dont think this will afferct CL?)

Thanks