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Thread: alarm malfunction on F01/02 - where is hood sensor?

  1. #1
    Join Date
    Apr 2018
    Location
    Salem, OR
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    7
    My Cars
    2009 750Li, 2008 328xi

    alarm malfunction on F01/02 - where is hood sensor?

    my 2009 F02 is having alarm issues... going off, and not being able to turn it off - no rhyme or reason it appears. When searching the internet... most say "likely" culprit is the bonnet alarm sensor. But for the life of me, haven't been able to figure out where the heck it's located at under the hood. Any help out there?

  2. #2
    Join Date
    Jan 2004
    Location
    (northeast) Indiana
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    19,321
    My Cars
    15 650ix GC & 14 X5 50i
    From the BMW TIS website...the hood sensor is S17: https://www.newtis.info/tisv2/a/en/f...lim/1VnYrCMJBc



    Here's another link that shows how the hood contact switch (#2) is incorporated into the hood catch (#1): https://www.newtis.info/tisv2/a/en/f...e-lim/D1J3Oia9

    Become a BMW CCA member! Click HERE to join and feel free to use my BMW CCA member #191509 as a referral.

    2015 650ix GC (Moonstone/Cohiba Brown) <<~>> 2014 X5 50i (Space Gray/Mocha)

  3. #3
    Join Date
    Apr 2018
    Location
    Salem, OR
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    My Cars
    2009 750Li, 2008 328xi
    Thank You QSilver7!

  4. #4
    Join Date
    Jan 2004
    Location
    (northeast) Indiana
    Posts
    19,321
    My Cars
    15 650ix GC & 14 X5 50i
    Become a BMW CCA member! Click HERE to join and feel free to use my BMW CCA member #191509 as a referral.

    2015 650ix GC (Moonstone/Cohiba Brown) <<~>> 2014 X5 50i (Space Gray/Mocha)

  5. #5
    Join Date
    Apr 2019
    Location
    Indianapolis, IN
    Posts
    5
    My Cars
    2016 BMW 740i; 2015 X4
    This isn't a direct response to your question, but, as an FYI, my wife's 2015 X4 recently had alarm issues, and it took the local BMW shop about a week to diagnose the problem (they said that they had to send codes/info to corporate?).

    In any case, it was finally determined to be a chafed alarm wiring-harness, which was repaired under warranty.

  6. #6
    Join Date
    Mar 2022
    Location
    Tucson, AZ
    Posts
    1
    My Cars
    ‘13 Alpina B7
    Where you able to replace just the switch or did you have to replace the entire assembly? Did it fix the car alarm? Thanks

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