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Yaw sensor - Where is it?

Discussion in 'A3/S3 Forum (8L Chassis)' started by djmotorsport, Mar 9, 2008.

  1. djmotorsport
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    djmotorsport Member VCDS Map User

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    [Mar 9, 2008]
    My S3 (2001) has an intermittent problem with ESP/ABS. Looking through the forum, it appears likely that the culprit is the Yaw sensor (1J0 907 657A). I've taken off the lower dashboard on both sides, but I cannot find the damn thing! Anyone know where it is?
    MarkyB has one for sale, so at least I know where to get one once I can find it :)
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  3. benr
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    benr Member

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    [Mar 9, 2008]
    you sure its not the brake switch?
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  4. HTC
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    HTC Active Member

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    [Mar 9, 2008]
    Its attacjed to the side of the steering column, quite far down.
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  5. MarkyB
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    MarkyB Member

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    [Mar 9, 2008]
    Hi,

    your best bet is to buy/borrow a VAGCOM and check which sensor is faulty, as there are couple of sensors that can cause the EPS/ABS warning light to come on.

    Here a couple of posts that may help

    Diagnostic tools off ebay [Buying a cheap VAGCOM, you'll need your own laptop!]
    http://audi-sport.net/vb/showthread.php?t=37739

    [Replacing the] Longitudinal Acceleration Sensor (G251)
    http://audi-sport.net/vb/showthread.php?t=38175
    * this is not the part that I have in the ForSale section, which is a YAW Sensor.

    Cheers,

    Mark.
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  6. djmotorsport
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    djmotorsport Member VCDS Map User

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    [Mar 9, 2008]
    If it was, what would be the symptoms?

    For me, the ESP and ABS lights come on at start from cold, and after about 10/15 mins, if I stop/start, they go out and stay out - occasionally come back on on bumpy roads, and the only way to clear them is to switch the ignition off/on. When the lights are on, you can spin the wheels in first and lock them under braking.

    Just managed to find the offending item (Thanks HTC) and get it out.
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  7. djmotorsport
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    djmotorsport Member VCDS Map User

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    [Mar 9, 2008]

    I'm lucky that I've got access to another A3 that I can swap parts with, but no VAGCOM. So, I'll try both of these sensors and see what's what.
    The power of t'internet - magic :)
    #6
  8. benr
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    benr Member

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    [Mar 9, 2008]

    not totally sure but with mine the esp and abs lights came on and it came down to a rear break light bulb not seated properly...

    thats what made me think its to do with the brakes although im no expert..
    #7
  9. S3_Pricey
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    S3_Pricey Member

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    [Mar 10, 2008]
    If it was the brake switch then you would have no brake lights. this happened to my A3 shortly after gettting it
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