Thanks mate! That sounds expensive and a lot of work. How much does a heater matrix cost? Should I try first without exchanging the heater matrix? probably better just buying a seat warmer from usb or smoke adapter? Do you think I can do the flushes myself or do I need a mechanic for that? Saw a video sometime ago from Chris fix it where he flushes only the tubes going to the heater matrix.
Problem is I don’t which tubes do that in my car and if the
problem is the silicone, the coolant reservoir has to be exchanged ( recon that shouldn’t be too expensive)