Hi guys, ive been asked to sort my mums remote central locking out on her 04 c max, it is being intermitant when it wants to work, ive checked and clean the battery and remote contacts but still only works when it wants from a varying range of distance so i dont think its the remote itself, so have has anyone got any ideas on what else it could be ? any advice would be greatfull as i dont really want to take it to ford and get stitched