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Thread: BMW OBDII - need serious help!!

  1. #1
    Newbie amit510's Avatar
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    Arrow BMW OBDII - need serious help!!

    I have a 2000 BMW 323CI and I recently bought a OBDII ScanTool from www.myscantool.com . I connected everything correctly, my guages are working fine but I cannot receive any ERROR CODES with this tool but I have a light (brake pad light) ON and on the software it shows that the light is ON but does not show any error codes?? I used ProScan tool which came with the CD and I tried the DIGIMOTO Free software, still no luck with the ERROR CODES!! I also hook this tool up on my dad's car "2003 Honda Civic" and didn't receive any ERROR CODES either and the engine light is ON on the car?? Whats going on here!! NEED SERIOUS HELP!!!

    THX IN ADVANCE!!!

  2. #2
    Newbie amit510's Avatar
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    anyone???

    Need Help!! Please!!

  3. #3
    Low Bitrate Erorus's Avatar
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    Depending on the car, you may only receive error codes in certain modes. Try to pull the codes at each of these 4 modes:

    1) car completely off
    2) car in accessory (radio)
    3) car's ignition on, but engine not running
    4) car fully on, engine running

  4. #4
    Newbie amit510's Avatar
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    Quote Originally Posted by Erorus
    Depending on the car, you may only receive error codes in certain modes. Try to pull the codes at each of these 4 modes:

    1) car completely off
    2) car in accessory (radio)
    3) car's ignition on, but engine not running
    4) car fully on, engine running
    THX!! I'll try this as soon as i get home today!!

  5. #5
    Newbie amit510's Avatar
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    Still Not Working

    Quote Originally Posted by Erorus
    Depending on the car, you may only receive error codes in certain modes. Try to pull the codes at each of these 4 modes:

    1) car completely off
    2) car in accessory (radio)
    3) car's ignition on, but engine not running
    4) car fully on, engine running
    I just tried all the modes but still no luck!!

    Any other suggestions guys!!!

  6. #6
    Constant Bitrate accentsound's Avatar
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    First off Honda and BMW use different OBDII protocols.

    Second BMW is and has been notorious for keeping most of thier diagnostic code proprietary. So you have to go to BMW and use thier diagnostic tools.

    This has been a big issue for years in the auto repair industry. So far the only 100% sure fire way of reading BMW OBDII codes is to get the bmw diagnostic tools. And those they only sell to dealers.

    I would bring this issue up with the people who sold you the kit. Sorry for no better news.

  7. #7
    Newbie amit510's Avatar
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    Quote Originally Posted by accentsound
    First off Honda and BMW use different OBDII protocols.


    Second BMW is and has been notorious for keeping most of thier diagnostic code proprietary. So you have to go to BMW and use thier diagnostic tools.

    This has been a big issue for years in the auto repair industry. So far the only 100% sure fire way of reading BMW OBDII codes is to get the bmw diagnostic tools. And those they only sell to dealers.

    I would bring this issue up with the people who sold you the kit. Sorry for no better news.
    I bought it from www.myscantool.com or www.gore-research.com they told that ISO Version will work with my 2003 Honda Civic and 2000 BMW 323CI. I emailed them regarding my issue, so lets see what he says or I want my money back!!!

    Anyone else bought a ScanTool from these people?? Is it working for u guys who are using this??

  8. #8
    Maximum Bitrate Skipjacks's Avatar
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    I've got a 1997 M3 and my Scan Tool works fine. It pulls error codes in all engine modes (off/on).

    The brake light might not be a part of the OBD interface though. That might be your problem. That brake wear sensor on the pads may be it's own little electrical system that doesn't run through teh computer.

    I'm not sure though.

  9. #9
    Maximum Bitrate fixerofallthing's Avatar
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    are you sure it is the "Check Engine" light that is on in the Honda. They also use a "maint. req'd" light as well to remind driver of service due. That is not through the OBD interface and is merely triggered by the mileage. The Brake pads light on the BMW is triggered by sensors in the pads. When the pad wears down far enough they ground themselves against the rotor to indicate low pad material. It is not necessarily a trouble code issue and just worn brakes. If you can see data for the BMW then the interface works but the Brake trouble codes are not accessible through generic interface.
    The Car 2005 Scion xB

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  10. #10
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    Not OBD2

    The brake pad light is not at all part of OBD2, as such you will not be able to turn it off. BMW brake pads have sensors built in that monitor the thickness of the brake pads, so when they get low the light will come on. There is no way to reset the light with out either replacing the pads or "adjusting" the sensor itself on the brake pad. Hope this helps

    -Nick

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