Question about 2003 BMW 525i

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My 2003 bmw 525i heater only blows cold air

When I turn on the heater it will only blow cold air. Otherwise car runs well

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 116 Answers

SOURCE: BMW 325xi 04 Heater Fan working (sound) but not blowing any air.

motor is going bad replace it

Posted on Dec 11, 2008

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  • 1 Answer

SOURCE: 2002 BMW 540I air/conditioner not blowing air at all.

It is the Final Stage Unit/Blower Motor Resistor - changed mine and the problem never came back. After two tows and drained batteries. Most mechanics don't seem to put this one togther - you have to demand it. Funny because it is a VERY COMMON problem in BMW.

Posted on Dec 22, 2008

  • 1 Answer

SOURCE: Faulty Fan Heater - The main vents are just blowing out cold air.

Go to your idrive., climate the vent settings. you will see a person along with vent areas on the side.
If this persons color is blue it blows cold air so turn the dial for vent closest to that person until the
color changes red then hot air comes out on the vents for driver and passenger. Then let me know.

Mark
2006 BMW 530i sport

Posted on Feb 01, 2009

  • 30 Answers

SOURCE: air condition not blowing cold air

Is any air coming out at all?

If warm air is being blown out, then your refrigerant level is probably low. The car is fitted with a safety cut off, to stop the air conditioning system working if the refrigerant (R134a) level is low.

This cut off only effects the air conditioning, the blower would still function normally.

Posted on Apr 21, 2009

  • 1 Answer

SOURCE: My 97 BMW Z3 keeps overheating

I too had similar problem when replacing the thermostat on my Z3. My advice is top up with more coolant and check the level.

Posted on Jan 06, 2010

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Blows cold air turn heat on


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Why does the heater blow hot air when I drive after its been idling for 15min and not during the idle when it reaches the 100 Temp?...(it blows cold air in idle)


Firstly, a thermostat that opens quicker will not give you better heat. Your heater core may be partially plugged causing a low flow issue. Another area to check would be the water pump impeller for corrosion or slipping on the shaft. Does the vehicle's cooling system operate well otherwise?

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2003 525i bmw heater will only blow cold air


Check climate control re circulation divider door to heat exchanger from heater core under dash passenger side .

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If the car is otherwise running fine, then the thermostat is almost never an issue. you need to take a look at the heater core and any heater valve stuck in a heater hose, that is where most of those issues are resolved.

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Ac blows hot air comp is running


Make sure that the tubing around the accumulator is getting cold.
If not, the refrigerant may not be charged up.
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Do you hear the vacuum motors working when adjusting the heat to cold selector? or changing the thermostat temperature if so equipped?

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1st you need to make sure no air in your system open you radaiator cap and your heater to max and see if air bubles or circulation is going on fill up accordingly otherwise you have blockage in your system or water pump if no circulation ////make sure no bubles all bubles should be gone////look for coolant circulation in your radiator make sure your thermostat is not defective or placed in the right position.

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1 Answer

My audi a4 is blowing out cold air even when the


heater core clogged or heater valve

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