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What is this on N/S front hub? Sensor??

Bad Sir Culation Dec 19, 2013

  1. Bad Sir Culation

    Bad Sir Culation Member

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    I managed to spot this today when I was swapping over the front shocks. What is it? Where should it go? Does the fact it is sat loose like that mean that I now need to replace whatever it is?

    Sensor.jpg
     
  2. desertstorm

    desertstorm Moderator Staff Member Moderator VCDS Map User quattro Audi A4 Audi Avant Owner Group TDi

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    Looks like a brake pad wear warning connection. Some brake pads don't come with this facility, I know the yellow stuff ones I had on my Passat didn't and to avoid getting a warning on the dash you need to short out the wires that would goto the pad.

    Karl.
     
  3. Sean_S3

    Sean_S3 Member

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    Think that's the wiring for the brake pad wear sensor. Should be connected to the rear of the pad if using OEM pads.
     
  4. Bad Sir Culation

    Bad Sir Culation Member

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    Thanks guys. Haven't had any warnings, so maybe it was connected somewhere and has come out while I've been working on it???

    I'll have a try and see if there's anywhere obvious that it can go. Don't particularly want it just flailing about!
     
  5. Sean_S3

    Sean_S3 Member

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    If using non standard pads then the sensor can be tricked into thinking its connected and then secure it out of the way.
     
    Last edited: Dec 19, 2013
  6. Bad Sir Culation

    Bad Sir Culation Member

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    I have no idea what they are, to be honest. Any easy way to tell?

    How do you trick it?
     
  7. Sean_S3

    Sean_S3 Member

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    From memory its a 2 pronged connection that plugs into the back of the pad, the circuit needs to be complete for the ecu to believe its plugged in. Bit of wire to bridge the 2 connection points together and then secure out of the way. It must have already been done though otherwise you would get a warning sign on the DIS.
     
  8. Taff D

    Taff D Member

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    ********! After fighting changing o/s caliper for hours yesterday I noted a wire on a pad. I did not see one on the o/s side so didn't think I had that facility so snipped it off. Today come to change n/s and lo and behold find a bloody wired pad!

    Now I have a brake wear warning light on. If I join the two wires on the sensor will it need resetting as stated by Sean_S3? That's a quick thirty quid down the drain.

    If I learn to live with is will it pass MOT if pads are okay? Or will it fail because of a warning light?

    Cheers

    Taff
     
  9. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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    Twist the wires together

    <tuffty/>
     
  10. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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    ... or cut the wires/connector off old pad and twist though together... reconnect the plug and bingo...

    <tuffty/>
     
  11. Taff D

    Taff D Member

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    Cheers Tuffty, just checked and I didn't throw the new plug away, will just solder and fit in,

    TAff
     
  12. Taff D

    Taff D Member

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    Cheers, wires soldered and works a treat.

    Taff D
     

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