changing front ABS sensor

Discussion in 'E46 M3 (2001-2006)' started by stevef182, Apr 18, 2018.

  1. 18 Apr 2018 at 5:14 PM #1
    stevef182

    stevef182 Wearing official robes

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    When replacing front ABS / wheel speed sensors on an E46 M3 is it a case of just swapping out the old for new and taking it for a drive or do the new sensors require coding / fault codes clearing? Thanks
     
  2. 18 Apr 2018 at 5:28 PM #2
    emanxsi

    emanxsi A mere Chipper

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    You should be able to drive it and it will clear, may take some ignition cycles and miles before it sorts itself out
     
  3. 18 Apr 2018 at 5:33 PM #3
    Haider1996

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    Error should clear after a while if not immediately. Be careful with the bolt holding the sensors it can be seized and often the sensor is seized into the hub! I had to drill them out on my last one! :(
     
  4. 18 Apr 2018 at 6:33 PM #4
    stevef182

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    Thanks. Unfortunately I dont have time to do it myself so I planned on taking it to my local indy this weekend but he wants £120 + VAT to change it blaming the required 'recoding' for the price - seems steep to me.
     
  5. 18 Apr 2018 at 6:40 PM #5
    E46CoupeM3

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    Coding erm don't think so.
     
  6. 18 Apr 2018 at 7:21 PM #6
    harrypevo

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    Take the wheel off, unplug the sensor, undo the bolt holding it to the hub.

    Pride old sensor out, worst case the nose seizes in the hub and needs drilling out. An extra 10mins on the process and hardly a disaster as it'll be going in the bin anyway.

    Push new sensor in, replace bolt, plug in sensor, stick wheel back on.

    Abs runs a self check every time you turn on the ignition so the light should sort itself out although some systems will still show the light if it thinks a sensor is still dodgy and may take a short drive for it to see the motion of the hub before it realised it's ok.
     
    Last edited: Apr 18, 2018
  7. 18 Apr 2018 at 7:50 PM #7
    E46CoupeM3

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    ^ For example E36 needs to go 10 restarts and drives without fault to self clear
     
  8. 18 Apr 2018 at 8:01 PM #8
    M Fifty

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    Getting the old one out is going to be the biggest issue...
     
  9. 19 Apr 2018 at 9:39 AM #9
    stevef182

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    Thanks
     
  10. 19 Apr 2018 at 9:50 AM #10
    stevef182

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    I can only assume he means clearing the fault codes - regardless it still seems expensive to me
     

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