1990 Mercedes-Benz S-Class "heater hot" Questions

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Question about Mercedes-Benz S-Class

2 Answers

...heater is not blowing hot air. when the temp is raised up to 85-90 degrees its still blowing cool air Sounds like it is clogged, r coolant is just not circulating through it. Lot of times there is a ...

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...diverter valve for the hot coolent to flow into the cabin's heater core. They are about $150 for used to insane for new. I recommend going for a used/rebuilt one on ebay or other online parts

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Question about Mercedes-Benz S-Class

1 Answer

why does my 2001 benz S430 get hot when I turn on the AC. The heater worked all winter without that happening. try changing thermostat

Question about Mercedes-Benz S-Class

1 Answer

The blower works, but no heat there are two valves under the bonnet right hand side next to fuse box if these are faulty and dont open they will not let the hot water to the heater matrix

...AND 1/4" IN DIAMETER Hi: I am pretty sure you are asking about a part called the heater core. It is what gets hot ,and your fan blows across it, providing heating and defrost. Auxiliary Water Pump

...hot your engine was when shut down and how low your coolant level was, if you had your heater turned on at the time it would have helped to keep the temperature down. Hopefully the heads did not warp ...

Question about Mercedes-Benz S-Class

1 Answer

...hot enough the key will work right away at times but not guaranteed. If I leave the key in the ignition I hear a few clicks like the key is trying to sync with the car and after the first few clicks ...

Question about Mercedes-Benz S-Class

3 Answers

hot heater core has a blockage.heater core and coolant system need flushing. Try flushing or blowing high pressure air through the heater core lines. its sludge build up and need to be flushed through

...heater valve not allowing hot liquid into the core 3: hot/cold blend door in the heater box stuck on cold 4: clogged heater core A clogged heater core will have one hot hose and one significantly ...

Question about Mercedes-Benz S-Class

1 Answer

...hot and the heater hose coming out is cold.the heater will blow cold air Possibly the heater core is 90% blocked. open enough to draw hot water in, (hose feels hot) but not enough volume to provide ...

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