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Thread: Where are the wheel speed sensors located?

  1. #1
    Join Date
    Feb 2003
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    Oregon
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    1998 Audi A6 2.8 Quattro, Just sold '94 BMW 325i

    Where are the wheel speed sensors located?

    I am trying to find the wheel speed sensors. MY ABS light is on and I want to clean the sensors and see if that fixes anything before I go and spend money at a stealer...

    Anyone know how or where to find them?
    Sam

    <iframe src="http://www.itwy.com/womack/bmw.jpg" width="477" height="214" marginwidth="0" marginheight="0" frameborder="0"></iframe>

    1994 325i
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    New Exhaust
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  2. #2
    Join Date
    Mar 2001
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    '03 X5 4.4i Sport, E320
    Rear differential.
    Todd Maurer
    Past - 5 E36s, 1 E39, 1 MB W210 E320, 1 GMC 6.5 ECLB, B6 A4 3.0 6 Spd Quattro
    Present - '05 E320 CDI, '06 VW TDI Jetta 5 Spd, '02 Ford F250 CCSB PSD, '02 Ducati Monster S4


    Mods: 92* Thermostat, MB to BMW Wheel Adapters, 18" BMW Style 72 Wheels, Custom Mercedes-Benz Diesel Plate Frame

  3. #3
    Join Date
    Feb 2003
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    Oregon
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    My Cars
    1998 Audi A6 2.8 Quattro, Just sold '94 BMW 325i
    Doesn't all 4 have sensors? or at least the front 2 and 1 for the back?
    Sam

    <iframe src="http://www.itwy.com/womack/bmw.jpg" width="477" height="214" marginwidth="0" marginheight="0" frameborder="0"></iframe>

    1994 325i
    Boston Green / Tan Leather
    New Exhaust
    JET Chip
    Custom Intake

  4. #4
    Join Date
    Aug 2002
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    Southeastern U.S.
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    Yes
    There is one wheel speed sensor for each wheel. The fronts are mounted on the back of the spindles, and I believe the rears are mounted on the rear trailing arms.

    There are some pictures of the sensors in the Bentley manual.

  5. #5
    Join Date
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    Iowa
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    My Cars
    '03 X5 4.4i Sport, E320
    Really, I had always heard the speed sensor was plugged into the rear differential. Sorry about the mis-information. :
    Todd Maurer
    Past - 5 E36s, 1 E39, 1 MB W210 E320, 1 GMC 6.5 ECLB, B6 A4 3.0 6 Spd Quattro
    Present - '05 E320 CDI, '06 VW TDI Jetta 5 Spd, '02 Ford F250 CCSB PSD, '02 Ducati Monster S4


    Mods: 92* Thermostat, MB to BMW Wheel Adapters, 18" BMW Style 72 Wheels, Custom Mercedes-Benz Diesel Plate Frame

  6. #6
    Join Date
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    Yes
    Actually, there is a sensor on the differential. It sends a signal to your speedometer.

  7. #7
    Join Date
    May 2002
    Location
    northeast ohio
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    My Cars
    E39T / E46 / E36 M3
    the "speed sensor" is located in the diff. The ABS sensors are located on the front hubs and real axles.

    I think what he is looking to do is clean the ABS sensors, not the speedo.

  8. #8
    Join Date
    Feb 2003
    Location
    Oregon
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    My Cars
    1998 Audi A6 2.8 Quattro, Just sold '94 BMW 325i
    Thanks guys, that's what I am looking for.
    Sam

    <iframe src="http://www.itwy.com/womack/bmw.jpg" width="477" height="214" marginwidth="0" marginheight="0" frameborder="0"></iframe>

    1994 325i
    Boston Green / Tan Leather
    New Exhaust
    JET Chip
    Custom Intake

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