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Thread: Air flow in saloon limited to windshield only

  1. #1
    Join Date
    Dec 2017
    Location
    Riga, Latvia
    Posts
    3
    My Cars
    BMW E46 Compact

    Air flow in saloon limited to windshield only

    Hello,

    I just wanted to know Your opinion about problem i have encountered with a car i bought. It is 2004 E46 Compact and one of its problems is that air inside a saloon flows only through openings for windshield. If I press on buttons to redirect air flow to my legs or body, nothing happens (only green light on the button). What is the source of the problem?

    Thanks!

  2. #2
    Join Date
    Mar 2015
    Location
    west chicago il
    Posts
    509
    My Cars
    01 E46 330i 5sp man spor
    I would start with reading the fault codes from the lhka control unit.

    Sent from my SAMSUNG-SM-G870A using Tapatalk

  3. #3
    Join Date
    Dec 2017
    Location
    Riga, Latvia
    Posts
    3
    My Cars
    BMW E46 Compact
    Quote Originally Posted by randy72877 View Post
    I would start with reading the fault codes from the lhka control unit.

    Sent from my SAMSUNG-SM-G870A using Tapatalk
    what i have found is that resetting ihka unit (cutting power) makes it produce various different results. for instance after reset No 1 it blew air to windshield AND to body but not to my legs. After reset No 2 it blew to windshield and to legs but not to body. I tried many times to make it work but best i did was as i just said.
    Is it units fault, i tend to think it is.

  4. #4
    Join Date
    Jan 2014
    Location
    USA
    Posts
    1,005
    My Cars
    04 ZHP, 83 320i, 00 M5
    Check your M bus. Also check for codes.

  5. #5
    Join Date
    Dec 2017
    Location
    Riga, Latvia
    Posts
    3
    My Cars
    BMW E46 Compact
    Quote Originally Posted by charter21p5 View Post
    Check your M bus. Also check for codes.
    How do i read codes?
    Last edited by rihards.g; 12-12-2017 at 05:28 AM.

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