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Thread: E34 M40 91 Alarm System info to disable

  1. #1
    Join Date
    Sep 2017
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    E34

    E34 M40 91 Alarm System info to disable

    I tried more than 15-20 hours internet search to find info about E34 and how to disable alarm system (where the button is, where the relays are etc?). I have a serious electric problem due to alarm problems. The car is flashing the headlights and turn signals without sound when I have the battery on (someone had turn the siren over the years so I don't have problem with sound). I have to take off 2 relay (alarm and hazard) so to drive a block around without flashing the hazard lights. The relays are OK because I tried them from other E34. Electician told me that is definitely the alarm system.

    Second problem is that even i have the wireless key ... cannot disable it. Need to reprogram... and how?

    Any info about alarm system for E34 M40 1.8lt needed. The alarm is factory installed.

    Anyone knows and anything could help!!! Thanks a lot.

  2. #2
    Join Date
    Jan 2005
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    Japan
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    11/88 E32 750iL+98 E36M3
    Moved to E34 forum
    Shogun tricks and tips for the E32 series are HERE!

  3. #3
    Join Date
    Oct 2013
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    Australia
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    Nil BMWs as of 2020
    Telling us the sort of FOB used, or taking pictures of some of the componentry would go a ways to helping us disable the alarm.

    Below is what I have found to work with the "3G Mk1" alarm system (One button, black, corner missing FOB). Alarm siren is a square shape, with a key switch.
    When reconnecting the battery, ensure your key is in the ignition and switched to the Accessory position. The alarm will remain disarmed. If you do not do this, it is likely the alarm will think it is armed (as indicated by the red LED on the centre console).

  4. #4
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    11/88 E32 750iL+98 E36M3
    hint, he is from Greece, so EURO spec car.
    But we still need month and year of production, as the key version changed over the years

    here are the retrofit instructions for the EURO version alarm for E34, includes the drawings, based on that you should be able to remove it http://www.ow.no/index.php?option=com_wrapper&Itemid=34
    Last edited by shogun; 09-16-2017 at 11:19 PM.
    Shogun tricks and tips for the E32 series are HERE!

  5. #5
    Join Date
    Sep 2017
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    patra
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    E34
    Hi again. I'm including some fotos (engine, rear seat and FOB). I also include a short (6sec) video with my "symptoms"

    I managed to program the FOB (thanksto http://www.bimmerfest.com/forums/sho...d.php?t=418493) and now I lock and unlock the car wireless, but the "symptoms" with the alarm and the lights still goes.

    Ithink I just need to find where the alarm is and just to press the button to reset it, but I have no idea where to find it (alarm or button). Or maybe have to do something else.

    Fuses and switches are already checked being OK.

    Thanks for your help.
    Last edited by babisgk; 09-17-2017 at 02:19 AM.

  6. #6
    Join Date
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  7. #7
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  8. #8
    Join Date
    Mar 2014
    Location
    Quezon City, Philippines
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    '89 535i/5, '88 735i/5
    Just a thought... Could it be crash control module?

  9. #9
    Join Date
    Sep 2017
    Location
    patra
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    E34
    I have no idea for being crash module. I don't even know where is it.

    The technicians are telling:
    Electrician: The car must be seen by an alarm technician.
    Alarm Technician: Must be seen by a BMW technician.
    BMW technician: I need time (some days) to fix it. They told me to try some times to unlock with the key.

    I just learned that this specific model has no siren.

    I couldn't image how much complicated the program was at '90s!

  10. #10
    Join Date
    Jan 2005
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    Japan
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    54,720
    My Cars
    11/88 E32 750iL+98 E36M3
    crash alarm relay info on my website http://twrite.org/shogunnew/diagnosis/alarm.html
    https://www.bimmerforums.com/forum/s...sh+alarm+relay
    1358364692 CRASH ALARM RELAY
    Crash alarm geber is written on it, BMW e36 Crash Alarm Relay Replacement https://www.youtube.com/watch?v=BB2_fH834m4

    Fuse box diagram BMW 3 E36 http://fusesdiagram.com/bmw/fuse-box...bmw-3-e36.html
    Shogun tricks and tips for the E32 series are HERE!

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