Question about 2010 Mercedes-Benz Sprinter

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Cab heater runs hot

Cold air comes out while driving, but gets hot as soon as idling in traffic

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5 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Greg Bernett

  • 2989 Answers

SOURCE: Overheats in traffic. The heat does not work. Does

It can be a couple of things....first one is easy.

1. Low engine coolant level. Just remove the cap on the readiator (engine cold) and check the level of your antifreeze. If it is low, replentish it. This could be your problem.

2. Water pump has failed internally. Easy way to check, start your Benz, squeeze the radiator hose while it is running. Better to do this when the engine is cold. If you start to feel pressure in the upper hose, water pump may still be good. Should feel like rushing water going through the hose.

3. Thermostat. Could be a bad thermostat. If you run the heater and there is no heat but you have air flow...could be the thermostat. Bad air blend door actuator could do this also.

Hope this gives you a starting point!

Posted on Nov 01, 2009

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Anonymous

  • 1752 Answers

SOURCE: Overheats in traffic. The heat does not work. Does

With those symptoms, the simple solution is you're low on coolant. Open up the radiator when the engine is cold and see how much coolant mix you can pour in it.

Posted on Nov 01, 2009

ultrat

Mot Smith

  • 500 Answers

SOURCE: Hi, I am a Sri Lankan

low on freon the 1st place to check if you have a manifold gage check it other wise add a small can of freon you can get at auto parts store..

Posted on Apr 07, 2011

ESGold

ESGold

  • 63 Answers

SOURCE: the heater is only blowing hot air

Sounds as if the blend door is stuck open.

Posted on Mar 23, 2014

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Click this link below and go through the troubleshooting procedure to take care of the problems: ----



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http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
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http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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For car running hot and overheating issues, I suggest to you go through this help links. Click this link below and go through the troubleshooting procedure to take care of the problems: ----Car runs hot? http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
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http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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To troubleshoot this types of problem,click the link below :----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
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------
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---------
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-----------



For car running hot and overheating issues, I suggest to you go through this help links. Click this link below and go through the troubleshooting procedure to take care of the problems: ----Car runs hot? http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
-----------All types of car overheating problems and troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html
Car freeze overnight and started overheating while driving?http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html-----------Engine Overheats and heater blowing cold?

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

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

Car overheats and Air blows hot at idle?
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
--------overheating? http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html
----------Car engine Overheats and transmission starts slipping?http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html
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For car running hot and overheating issues, I suggest to you go through this help links. Click this link below and go through the troubleshooting procedure to take care of the problems: ----

Engine Overheats and heater blowing cold? http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

----------

Car runs hot? http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
-----------All types of car overheating problems and troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html
Car freeze overnight and started overheating while driving?http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html-----------Engine Overheats and heater blowing cold?

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

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

Car overheats and Air blows hot at idle?
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
--------overheating? http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html
----------Car engine Overheats and transmission starts slipping?http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html
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For car running hot and overheating issues,i suggest to you go through this help links. Click this link below and go through the troubleshooting procedure to take care of the problems :----Car runs hot? http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
-----------All types of car overheating problems and troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html
Car freeze overnight and started overheating while driving?http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html-----------Engine Overheats and heater blowing cold?

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

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

Car overheats and Air blows hot at idle?
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
--------overheating? http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html
----------Car engine Overheats and transmission starts slipping?http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html
----------This details will help.Thanks.

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1 Answer

HEAT BLOWS COLD AIR WHEN IDLING ONLY GETS HOT WHEN START DRIVING


You have still got air in the system.Remove the Feed back pipe from the header tank and wait for all the air to come out while the engine is running making sure you are toping up the header tank at the same time Dont allow header tank to run dry while doing this.Good luck

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