Steering assist fault, service required light is on. The car was fine when I pulled it to my garage. Now steering is hard!

Does anyone have the paper work/book/information on what is installed in my bi-fuel van? I can't find it anywhere online?

5th hand van, Central locking works except rear doors, viper alarm fitted, interior lights don't turn off when doors open option used, was told its stereo so disconnected but still happens, any ideas?

I don’t think the alarm is working how can I tell can someone help me out………………

The radio not working in that screen appear mute