A while ago, when getting out of my mums car i slammed the door and the seatbelt buckle was hanging out. The door slammed on the buckle and dented the inside of the door but it's only very small. However this has lead to the central locking not working properly. It unlocks fine but will not lock using the remote. The light to say a door is open is also constantly on and i would like to sort it out. Does anyone know either how to fix this problem myself or who can fix it and a rough estimate?