Question about Mercedes-Benz 2007 S550

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The fan is blowing but its only blowing cold air. no heat

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I have a 05 ml350 , It blows cold air at bottom and luke warm air from vents , Can you help me answer on a fix

Posted on Jan 26, 2019

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Check your antifreeze level. If it's too low, it won't be getting to your heater core. If your antifreeze level is fine, your heater core could be plugged. Another thing that could happen is your mixture door for the heat is not moving properly.

Posted on Feb 18, 2015

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Posted on Jan 02, 2017

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1 Answer

I have a 2005Chrysler minivan front heat does not blow back heat blows cold cold air front doesn't blow at all what could this be


If the front heater does not blow any air suspect a defective fan motor or resistor. You can try turning the blower on and banging the underside of the passenger dash to see if it begins working again. If it does, suspect a bad fan motor. If blowing only cold air, the most common problem is a low coolant level

Jan 05, 2016 | Cars & Trucks

1 Answer

Why would my combo A/C - Heater unit not blow air while heating or cooling is selected but will blow air just fine when set to "fan only"?


Sounds like wiring issue to me. I've delt with units like this and there is a wire lead for fan only and a separate one to run the fan when the unit is cooling or heating. I'm only speculating here but I would bet money that this was improperly installed.

Dont get discouraged though because it sounds like its working (for the most part) if you feel up to the task find the manual and check your connections. Otherwise hire a professional.

Sep 20, 2014 | Heating & Cooling

1 Answer

My heat isn't working..the fan blows cold air


Depending on the year make and model, it could be a blend door problem if the heater hoses are hot.

Oct 08, 2012 | Cars & Trucks

1 Answer

Heater doesnt work


To troubleshoot this types of problem,click the link below :---
Car heater blowing warm, but not hot air?http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html

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Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.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

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No heat on car? http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

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Heater blows intermittently and temp gauge goes erratic?

http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html

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Heater blows cold?

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

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Heater/AC blower motor not working?

http://technoanswers.blogspot.in/2012/02/heaterac-blower-motor-not-working-on.html

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A/C, heater, defroster fan, not working? http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html Heater problem?

http://technoanswers.blogspot.in/2012/02/heater-problem-on-isuzu-trooper.html

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This will help.Thanks.

Mar 27, 2012 | 1994 Volvo 960

1 Answer

Air works great but no heat just blows cold air


For this types of problem,i suggest you to check this help links:----Car heater blowing warm, but not hot air?http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html
---------A/C, heater, defroster fan, not working?http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html
--------Heater problem?http://technoanswers.blogspot.in/2012/02/heater-problem-on-isuzu-trooper.html
---------Engine Overheats and heater blowing cold?http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html
-----------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----------------This will help.Thanks.

Sep 05, 2011 | 2007 Suzuki SX4

1 Answer

Fan is blowing cold air only


good day, you may have some heating core issues, anti freeze leakage, have it checked. hope this helps, have a nice day

Feb 09, 2010 | 2007 Volkswagen Passat Sedan

2 Answers

No heat. Fan blows cold air.


I think u may have an air temperature control blend door problem, the door is moved by a small electric motor, it is stuck in the cold position.

May 12, 2009 | 2000 Honda Accord

1 Answer

My ducted heating continually blows cold air thru


Well, if need be, turn the breaker off. Turn it on when you need heat. Sounds like the fan relay is sticking or something if that sort. Is the tstat fan selector on auto?

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Jun 17, 2017 | Heating & Cooling

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