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ABS kicking in when turning right and braking at very low speeds (under 5mph)

Discussion in 'Motors' started by bledd, 21 Apr 2016.

  1. bledd


    Joined: 21 Oct 2002

    Posts: 46,448

    Location: Parts Unknown

    On my wife's Yaris. For the past few weeks we've had this issue.

    If you're turning right sharply and braking, you'll feel the ABS kicking in.
    It's going way too slow for the wheel to actually be slipping (to cause a genuine reason for ABS to turn on)

    Is this likely to be just a duff sensor, could it perhaps just need cleaning?

    Braking at all other times feels perfect.

    We only really find it kicking in when parking the car.

    The ABS light isn't showing up during normal operation.
  2. benneh


    Joined: 9 Apr 2004

    Posts: 9,162

    Location: Nr. brumijum

    Sounds like a knackered wheel speed sensor.
  3. tl45


    Joined: 26 May 2014

    Posts: 634

    Location: Warrington

    As above, issue with a wheel speed sensor, or if car has ESP also perhaps mismatch of tyre wear front to rear - sometimes this is exaggerated if there's a mix of tyre brands fitted.
  4. iaind


    Joined: 26 Feb 2009

    Posts: 14,814

    Location: Exeter

    How old is it? The ABS rings on some cars can rust and disintegrate with age
  5. cdcopyman


    Joined: 19 Oct 2002

    Posts: 944

    my gf recently had simialir issues with her 2011 astra , esp service and abs / traction lights where coming on every now and then ....then stayed on....ran a diagnostic check with one of them cheapo blutooth obd readers and showed a speed sensor fault :( although doesnt say which side so a freind used his snap on solus scanner and showed us it was drivers side. bought a new sensor online for £17 and fitted. been ok since
  6. Kaeo

    Wise Guy

    Joined: 7 Mar 2011

    Posts: 1,361

    Location: Edinburgh

    100% sensor or abs ring. My car does this, it has a chipped tooth on the ring, but a half dud sensor will do the same. A very dirty sensor will aswell, mind.

    Edit :- The point being the abs block gets a signal that the wheel has stopped before it has due to the sensor or ring giving wrong info, so the abs kicks in to stop it from locking, even though it isn't locked.
  7. bledd


    Joined: 21 Oct 2002

    Posts: 46,448

    Location: Parts Unknown

    Car is a 2003 model.

    Tyres are matched and evenly worn. I'll whip the wheels off, clean the sensors and inspect the teeth.

    Thanks gents.

    Forgot about my ODB2 reader, I'll run that on it too!