Looking a bit of guidance if possible !

Basically, the heat that comes from the vents is luke warm at very best.

I have changed the thermostat, no coolant leaks, temp guage sits at 90 degrees, and no faults relating to HVAC or anything on VCDS.

My next port of call is going to be a matrix flush, but I was hoping someone may be able to suggest anything else that I may have excluded?

Also would anyone have done a flush recently, and could give me guidance? Pipe location etc ?


thanks