Question about 2003 BMW 525i

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2003 525i bmw heater will only blow cold air

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

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

Posted on Jan 22, 2013

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6ya6ya
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Posted on Jan 02, 2017

  • 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

jigsaw_9077
  • 308 Answers

SOURCE: 1998 BMW 328i heater/AC blower is not running

You have clean the blower unit , may be its dirty then . and then check the blower resistor unit for malfunction.

Posted on Aug 04, 2009

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Blows cold air turn heat on


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These selections are run by Engine vacuum. sounds lie a diaphragm is NG to control the lower door

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1 Answer

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