Hi there. The driver's side controls for the central locking system and electric windows suddenly stopped working (with the driver's side window rolled all the way down). The child-lock button (located on the same panel) is also unresponsive. The central locking control on the passenger side door works fine, and the other three electric windows (passenger and two rear windows) are all working fine. The problem only seems to be with the controls on the driver's side. There is no alarm system or immobiliser installed. Please advise. Thank you.