53 plate berlingo multispace 1.6 petrol

help, my berlingo, is doing weird things,  yesterday I opened the doors with the remote and a few seconds later the dipped headlights came on (the switch is off)  the lights stay on and I have to disconnect the battery for them to go off.  I have also noticed that the heater blower, front fogs, and hooter don't work.  when the headlights are on the back lights are off. I can switch on the sidelights using the light switch but I have no high beam and cannot switch off the lights     any ideas  ??????????????


thanks in advance

paul