W126 Absolutely No Heat

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W126 Absolutely No Heat

02-24-2015, 11:07 PM

tahnl

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Join Date: Feb 2015

Posts: 1

W126 Absolutely No Heat

I have a 420SEL with absolutely no heat. No heat on low, no heat on defrost, none! The monovalve was replaced and still no heat. Then, thinking it might be a bad monovalve, it was replaced again and poof - there was heat, well for a few minutes. I tried to turn the heat down and now I am back to no heat.

Suggestions? Heater control panel? Difficult to change out?

I would certainly appreciate any and all advice.

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