Question about 2003 Mercedes-Benz S-Class

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The heaters only blow cold air no warm air in my mercedes 320cdi is it a quick fix

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The problem possibly faulty heating water circulation pump, must diagnose to find the fault, it can stop by many deference control system in your particular car,

Posted on Nov 15, 2010

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Posted on Jan 02, 2017

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Most likely the thermostat broke. I expect that you have an older Hyundai and never had the anti-freeze changed. When the engine is cold the thermostat is closed which causes the engine to warm up more quickly. A warm engine runs more efficiently (less gas) and more smoothly. When the engine temp reaches a certain temp the thermostat opens and then allows the hot engine coolant to run through the lines to the heater core. The heater blows air over the heater core which produces the warm air that warms up the cabin. Thermostats used to be cheap and easy to change. I would suggest a web search for how to replace the thermostat. Something like 'hyundai accent 2002 replace thermostat".

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The heater in my 2002 Mercedes ML500 only blows cold air (air temperature) and the AC as well. The middle vent is not blowing at all.


As per your problem mentioned. There are few solved help links to troubleshoot these problems. Go through the list and Click the link below:----


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Heater blows cold?

http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

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Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

----------


No heat, blower blows only cold?

http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html

------------

These will help.

Thanks.

Feb 15, 2013 | Mercedes-Benz ML320 Cars & Trucks

1 Answer

Heater on driver side blows cold air


something wrong with flap operating device ?? would need to get my head under the dash to sort it though because their is so many variables of what could be causing it ,quick fix is to disconnect the operating mechanism and put a elastic band on it till the weather warms up

Jan 03, 2010 | 2004 Chevrolet Avalanche

1 Answer

How can I get my heater to blow on my feet to get warm quickly? I have a 2003 Eclass Mercedes.


The heat will not come in before the engine is heated up a bit. You can shorten this period by pre-heating the engine in the cold environment.

Dec 13, 2009 | 2005 Mercedes-Benz Mercedes Benz E320 Cdi

1 Answer

I have a 1999 c230 benz and the a/c started blow when I first cranked it up but dies quickly. You can still feel the cold but the air will not blow.


Let the car warm up to normal operating temp and then try the heater. If the blower works for the heat it should not be a blower fuse. If the blower does not work at all, then check the fuse panel for a blown fuse. Unfortunately this will not tell you why the fuse blew. You probably have a bad blower motor. If you have climate control, there should be a variable resistor for blower speeds and that plug- in part may be burned out.

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1 Answer

We have an audi a4 2.6cc , the heater only blows cold air we have had a new heater matrix a new water pump and thermostat and a new radiator now it blow luke warm air but not hot,please any ideas


sounds like the thermostat is not functioning correctly? either that or not in at all? thus making the water which would normally warm up quickly, warm up extremely slowly and on really cold days not at all? with a 2.6 engine your car shoudl warm up in record time?

Mar 04, 2009 | 1998 Audi A4

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Car heater blowing cold air and leakage behind the dashboard


IT'S THE HEATER CORE, IT IS LOCATED UNDER THE RAIN GUARD THINGY UNDER THE WIPER MOTOR

Nov 18, 2008 | 1991 Mercedes-Benz 190

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