Set out on a 600 mile drive and an hour in the child security lock started clicking on and off on its own. The drivers window also had a mind of its own and on one occasion the passenger front window went down then up. To stop the flashing on the dashboard I wedged some cardboard into the switch so it just clicked in the door intermittently and stopped it flashing on and off on the dashboard. Anyone had this issue? Landover can't look at the fault for weeks. My concern is this could lead to further electrical issues with the car. Could it just be a motor issue and if so are they easy to replace? Thanks. Any advice greatly appreciated.