BenzWorld Junior Member
Date registered: Aug 2012
Vehicle: Mercedes Viano 2.2 Ambiente
Location: Essex, Uk
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Hello - No need to remove dash or foot well, though the heater is in the passenger foot well to the right hand side. It has a black plastic cover on it and you may just be able to see the metal entry pipe without removing anything at all. You will see it only if you use a torch.
To check the temp of the pipes you need to check from the engine compartment. Passenger side, you can see the pipes going in and out of the bulkhead. And the motorised valved is to the right hand side of that, attached to the inner wing. No need to remove anything at all. Just gently push any hoses aside to reveal the solenoid. It is below the fuse box. The solenoid is made of black plastic with a hose attached to each end and part of the wiring loom (black wrapped) goes to it also.