Now I have installed a new thermostat (old one was defective for a long time) and have replenished the cooling water (of course completely correct)
Since the heating still doesn't work, I checked the error codes of the climate, which brought me 2 errors:
once error 09: coolant temperature sensor G62
and error 15: temperature control valve V68 is wrong
all good and nice, but where can I find the G62 and where can I find the flap V68
Would be nice if someone could help me!
MFG Peterling!