Just had head work done on the W210 and now have no heat being generated either from the "EC" position or the when the "AC" is on. And of course the mechanic is claiming no responsibility as "the head work should not have affected the climate control system".

What could this be from? "AC" seems to be fine.

Ideas?

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Norm K.
'97 E420 Sport
'06 E350 Sedan
'67 Mustang Coupe
'70 F-250
'15 VW Jetta