Problem child Omega b Facelift

moin, moin, i hope someone can help me with my problems. expert people are there enough as well as I have read that. i hope the one or the other has the time to accept my problems to my car: omega b facelift 2.5dti design edition EZ 06/2002 120000 km accident-free I bought the car from private a week ago he meant it’s all in order we had also taken care of everything possible(klapping,motor,ect.) but on something not. motor runs quietly, z It looks good, automatic switches well,differential and gearbox dry,maintained indoor space, bc shows no errors. HELP—– I have the stupid presumption I bought garbage—–Help my problems: 1. my climate does not cool(kumpel meant relay switching but)—he is a trained kfz mechatronician 2. my xenon ALWR does not regulate(lights about 30 meters) so definitely too short error memory I had read out at the boschservice…according to this expression is left and right everything i In the bc no error is shown. 3. headlight washing system does not work if I don’t touch the wipers even if I use the washers 4th rear window heating system I don’t think I’m safe (in the absence of a test possibility) 5th load air cooler protection is burned (see picture)(all 3 fans turn but easily) my buddy meant the one or the other f ochler could have something to do with each other(climate+charge air cooler) I try on this way my buddy (learned kfz mechatronicer) and the workshop to facilitate the work. I hope you can help me. thank you already in advance!!!! greeting oli