Question about 2002 BMW 5 Series

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

Hello, This beauty is is sadly killing me softly. Driving down the freeway and the AC and air stops blowing. No air. I pushed all different kinds of combinations of AUTO/RECYCLE and cannot get air to blow out. I replaced the cabin air filters just to make sure they were clean but now the air will work on and then turn off when it feels like. I can turn on the car and it will work, then if I turn off the car and get back in from work the ac/air bill not blow out. I can hear something turn on when I turn on the fan and ac buttons but nothing blows out. Then some days it will work like a charm cold and strong. Any ideas?

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  • Jason B
    Jason B Aug 22, 2008

    very helpfull. thanks for pointing me in the right direction.

  • BeeM13 Sep 07, 2008

    I have a 2003 540i with same exact problem. However, few days ago blower has simply quit. So i have no air since than.
    I will appreciate it if you can post how you resolved this issue. What exactly was wrong. If its connection problem, where should I look for it.

  • Anonymous Jan 05, 2009

    i have the same problem on 1994 E320 mercedez benz



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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

  • Kenny Jan 23, 2013

    That was done six months ago. Unit worked fine. Again still blowing Just cold air.



i had the same problem a couple of months ago...
the garage said it was the heater resistor
they changed it and it works

Posted on Oct 06, 2008

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No - do not listen to the above solution. I believe this is he common a/c resistor problem that plagues these cars.

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Posted on Sep 11, 2008

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Hi, what you are describing sound like low freon at the ac sistem,...Good Luck

Posted on Aug 19, 2008

  • Tony Rodriguez Aug 20, 2008

    Hi,you should chech the ac blower , motor ,conections ,fuses. good luck....


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