My 2005 ml 350 has no heat
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Mercedese benz 2003 C230 Kompressor (coupe) limited sports edition and Mercedese Benz 2005 ML 350
My 2005 ml 350 has no heat
My 2005 mercedese benz ml 350 has no heat the lights are on the buttons to regulate the temp but there is no heat
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2012 CLS63
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Here are thing to do before replacing anything.
1. run eng. to operating temp. and check to see that both heater hoses at the firewall are hot.
2. feel the hose completely at the Coolant Expansion Tank to see if it is hot.
3. turn off eng., turn key to pos. #2 and feel with your hand that the Coolant Circulation Pump is working. If not, remove two wire connector from pump and check to see that there is 12V at the WHITE wire. If there isn't 12v, then the AAC Control Module is faulty and it must be replaced. If there is 12v, and the pump is not working, then the pump must be replaced.
4. depending on the results above, remove the glove box and with a long flat tip screwdriver, pry out the metal rod and manually move the rod in the opposite direction and you will get heat. And the Blend Door Motor must be replaced.