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Issue with sway bar relocation kit

Discussion in '3rd Gen. Tacomas (2016-2023)' started by keegannamwen, Mar 30, 2020.

  1. Mar 30, 2020 at 12:08 PM
    #1
    keegannamwen

    keegannamwen [OP] New Member

    Joined:
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    First Name:
    Keegan
    Vehicle:
    2018 Quicksand Toyota Tacoma TRD Offroad
    TRD pro grille, rain deflectors, 3”x2” leveling kit, roof rack, sliders, bed rack, oversized tires
    I just installed a 3 inch leveling kit in my 2018 tacoma, and I had to put a relocation kit in for the sway bar. Now when I’m driving it pops up on the dash “Pre-Collision System Malfunction” and “Check Vehicle Stability Control System”. Any clue on how to reset these lights? Any help is greatly appreciated
     
  2. Mar 30, 2020 at 12:58 PM
    #2
    Taco_Craig

    Taco_Craig Well-Known Member

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    2016 MGM Tacoma, DCSB TRD-OR
    RCI Sliders/Plates, Icon [Stage 3] Suspension
    You changed the height of your truck. The geometry is out of whack. Disable it or get it recalibrated.
     
    JoeCOVA likes this.
  3. Mar 30, 2020 at 12:58 PM
    #3
    EatSleepTacos

    EatSleepTacos Well-Known Member

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  4. Mar 30, 2020 at 12:59 PM
    #4
    EatSleepTacos

    EatSleepTacos Well-Known Member

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    Randy
    West Valley, AZ
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    An explanation on why it's needed.

    "VSC (vehicle stability control) uses vehicle speed, yaw rate sensor in an ecu, and steering wheel angle to calculate if the vehicle is going where the driver intends or is skidding. If detected, the truck will try to correct it.

    So if truck detects the steering wheel is turned (measure angle), and truck is moving (measure wheel speed), ECU will expect to see a yaw rate (turn rate assuming no slipping). If ecu doesn't detect the expected yaw rate within some error, it will fire brakes on one side of the truck thru abs system to try to obtain the expected yaw rate. This has the effect of reducing skidding out of control.

    So truck needs to know where straight ahead is on steering wheel so it can measure how many degrees of turn are currently commanded. It uses a sensor in the steering wheel to measure that angle. ECU will check to see if its 0 calibration on steering wheel correlates to zero yaw enough of the time (in certain conditions, etc). If it detects zero yaw isnt at zero steering angle, will give an error.

    To fix, need to reset the zero point at the steering wheel in the ECU. This can get out of whack after curbing, or lifting, or suspension work, alignments etc."
     
    Taco_Craig and JoeCOVA like this.

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