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  • Windsheild wipers not stopping

    I have a problem with the front wipers where they intermittantly won't switch off, and are stuck in low speed.
    Wipers will run in high speed mode but return to low speed when wiper switch is turned off.
    Intermittant mode stops working, only works on low speed when set for intermittant.
    Turning the wiper switch off doesn't work, stuck on low speed.
    Turning ignition off stops wipers but once ignition is turned on wipers start again.
    I can pull the fuse but wipers start again once fuse is put back in.

    When the wipers do operate correctly, the 12v signals from the wiper switch seem to turn on and off properly.

    The only way to stop the wipers is turn off the engine and wait a short time (15sec) and restart the car, then turn off the wiper switch. The extra power drain from starting seems to reset the wiper control.

    I'm not sure if it is the wiper controller relay or the park switch which is faulty?

    Any ideas would be a great help.
    Prado 120 GXL v6 Petrol 2003, Lovell 50mm raised springs -HD Front -Medium Rear, Bilstein Shocks, 600w inverter, Rhino roof rack and tray.

  • #2
    Re: Windsheild wipers not stopping

    Hi Matt

    Sounds like a fault in the park circuit, either the switch or a short somewhere.

    Also seems Strange that turning the engine off fixes it, but not pulling the fuse, maybe there is a wiper control module that is powered off another fuse.

    Good luck

    Matt
    2003 Prado Grande TD Auto Pearl White

    Comment


    • #3
      Re: Windsheild wipers not stopping

      Hi,

      I would also guess at the park switch in the wiper motor as it also brakes the wipers
      when the are at the park position and if it doesn't they will keep going and run though.
      If this the case you might see them stall then speed up as they overrun, also as the screen
      dries the wipers might stop due to increased drag.

      Try pulling out the fuse and insert the fuse in and out getting the wipers to stop in there park position.

      If you can get them to stop there doing this the park switch or wiring is your likel culprit.

      Cheers
      LeighW
      HKB Electronics, manufacturer of the Alternator Voltage Booster, Silver 2008 D4D,Lifted,Underbody protection, Alternator Voltage Booster, Tiger Z winch, Lightforce DL, Air Horns, Tanami Drawers, Drop down fridge slide, Outback cargo barriers, Rotronics dual Battery system, Polaris GPS, HF/UHF/VHF, Radio speaker combiner, Long ranger water tank, Diff breathers, Inverter, Snorkel and others

      Comment


      • #4
        Re: Windsheild wipers not stopping

        Hi

        thanks for the replies,
        I have since brought a workshop manual on CD, they are quite good with lots of details.SC00W3EA
        The tip about pulling the fuse in the park position was a great help. I did find that the park switch was opening and closing properly.
        When the wipers were playing up, the low speed output was on all the time even in off position and also when the park switch was open. I put this down to the intermittant wiper relay not switching off.

        In the wiper switch assembly there is a small plug to disconnect the wiper speed potentiometer from the switch electronics. After unplugging this
        the wipers work fine in low speed, high speed and off position but no intermittant.
        This will be fine until I get a new switch, hopefully it won't be to expensive as long as I can buy the wiper switch by itself and not the whole wiper/blinker assembly.

        Does anyone know the approx cost from toyota?

        thanks
        Matt
        Prado 120 GXL v6 Petrol 2003, Lovell 50mm raised springs -HD Front -Medium Rear, Bilstein Shocks, 600w inverter, Rhino roof rack and tray.

        Comment

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