An easy upgrade to remote central locking. Remove module, plug in replacement & program remote fob key. As for interior light staying on. it should turn on when unlocking doors & turn off when ignition is turned on or door are locked. Common problem is CTM built into instrument cluster - Pull fuse on back of fuse/relay panel located behind The system will emit an acoustic signal to indicate start of programming mode. Programming mode activated for 10 seconds proceed as follows: Press and hold lock, unlock or boot release button Fig. 1 [1], [2] or [3]. Wait for acoustic signal (indicates correct programming). Repeat above procedure within 10 seconds to program remaining keys. Since last year i have a problem related to central locking sistem that is causing a battery surge. - when double lock is activated (by key or remote) if i rotate the key to unlocking position about 80 degrees then only the passenger side doors will unlock. If i rotate 90 degrees (until the end) then all the doors will be unlocked. Drivers side electrics. My Mondeo is a 2009 (59) and has, in the last few days, developed an electrical issue. I can't control any of the windows or use the electric mirrors using the door controls. The central locking works only on the passenger side (and boot & filler cap) - I have to manually lock the front and rear driver's side doors. I recently noticed that the rear drivers side door would not lock with the central locking so after a bit of research on this site I bought a used mechanism part off ebay. I've fitted this ok but no difference, i've checked cables etc and all fitted ok and I just cant figure out whats wrong Ford Mondeo / Vignale Club ; Mk3 Central Locking - Rear Door Locking Failure it means you know it is a problem with a module or wiring. Ford Model: Mondeo MK4 Lead tech. Aoa. 522 satisfied customers. Volvo V60 Heater blowing hot all time. Unable to control. Volvo V60 Heater blowing hot all time. Unable to control tempreature. Fault codes B1087-4A and B1088-4A Lin Bus system internal faults … read more. Hi all. I've got a 2010 Mondeo TDCi with an intermittent problem with the passenger side locks and windows. Occasionally both passenger doors won't lock or unlock either remotely or with the key placed in the lock, and the electric windows will only work using the passenger side controls. wsPn4.