Hi I have a Astra h vxr and I have only just bought it my first one love it ? but the climate control module is not working. So did usual checks fuses and stuff and realise k7 relay not in fuse housing would this stop it working. But in my climate control panel I have heated front and rear screen Also not working. Need help !!! Any advise on what may be causing this. Is it the fact there is no relay? Or something else ?! Thanks ?