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Thread: 2009 750i AC Issue

  1. #1
    Join Date
    Aug 2016
    Location
    Houston, TX
    Posts
    1
    My Cars
    2009 BMW 750i

    Talking 2009 750i AC Issue

    Hello Guys,

    I am new to this forum and have learned a lot already and want to thank you guys for that. I am having an issue with my AC. No air comes out of the vents. I have already tried every setting possible. Only the rear vents blow warm air even if I turn on the snow flake or not. If I drive on the highway about 80mph the vents come on and blows the same warm air as the rear vents. Fan speed control can't control it. If I keep turning on/off the snow flake sometimes it blows cold air for a couple of seconds and it has a funny smell. So I am thinking if the issue is the blower motor, blower motor resistor or ac compressor. I tried to do a recharge and noticed that the freon is fine. I am wondering if you guys have any idea of what the problem could be? Also the front defroster also does not work. Help please, I really don't want to spend money for someone to fix it if I can do it myself with the help of you guys

  2. #2
    Join Date
    Dec 2007
    Location
    Cincinnati, Oh USA
    Posts
    326
    My Cars
    09 750i, 12 X5
    Two things I would look at

    Cabin air filter.... but does not explain warm air... only reduced or no flow
    Resistor... More likely, but still does not explain warm air
    compressor clutch not engaging.... Most likely

  3. #3
    Join Date
    Aug 2014
    Location
    Atlanta
    Posts
    1
    My Cars
    2011 F10
    Hey, did you ever find out the problem? I'm having the same issue.

  4. #4
    Join Date
    Jan 2016
    Location
    Ca
    Posts
    6,981
    My Cars
    2001 525it
    The ac compresssor on these car is not the same designs as older types, be careful about putting freon in. Really it should be done with a machine. And if you do replace the compressor there are specific things that need to be done or you will ruin the new one.

  5. #5
    Join Date
    May 2018
    Location
    St. Gabriel,La.
    Posts
    4
    My Cars
    2010 750i
    Advice would be greatly appreciated. Having the same issues. also in the morning and at night seems to work fine

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