The heater valve is a simple replacement. DON'T start that job unless the engine is cold. Located at the right rear of the engine compartment.


IF one of the aux fans is working then the relay is still good..no need to replace a good working part!

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator