Announcement

Collapse
No announcement yet.

cruise control turns off and wont turn back on

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • cruise control turns off and wont turn back on

    hi, i can start my prado and activate the cruise control and be driving down the highway , then all of a sudden the cruise control turns off and i cant turn it back on. i have also noticed that when it happens i will not go into top or low gear and the car loses power. i have taken it to ultra tune and there are no fault codes. the only way to fix this is to stop the car lock all doors and restart the car, and you may have to do this a few times before it comes good. can anyone help, has this happened before

    thanks mark

  • #2
    Re: cruise control turns off and wont turn back on

    I had a similar thing on my 90, although there was no indication of loss of power. Initially the cruise would just turn off for no apparent reason. Usually this means that the brake switch (or clutch switch if a a manual) is dicky telling the cruise to disable. It can also be low brake fluid as this will also turn off the cruise.

    In my case it was the speedometer sensor. The cruise will also turn off if the set speed is 20km/h greater than the actual speed. In my case the speed of the car was fine however the speed read by the sensor was dropping to zero & the cruise ECU was seeing a problem with that.

    Initially it was intermittent & occurred when hitting a bump in the road....eventually we had no speedo at all for extended periods....

    On the 90 & probably also on the 120, the auto gear box has two sensors, one is the input speed sensor engine speed) & one is the output speed sensor (road speed). The ECU uses this information to improve the smoothness of gear changes. If one of those sensors is failing it may be sufficient for the gearbox to go into limp mode...however I would expect a code to be registered in this case.

    Have you tried an extended trip without using cruise, just to see if that is the cause or the symptom.

    Cheers
    Richard
    2011 GXL TD Auto Prado Silver

    Comment


    • #3
      Re: cruise control turns off and wont turn back on

      Thanks for your comment, i have tried it without setting the cruise and sometimes it wont go into top gear. Could my dual battery system have anything to do with it. cause it seems to be getting worse, it feels as though the car loses power and the brakes are slowly engaging so it is not responsive. To get rid of it, i have start my car so as to crack the second battey and then start my car fully.

      Comment


      • #4
        Re: cruise control turns off and wont turn back on

        Thanks for your comment, i have tried it without setting the cruise and sometimes it wont go into top gear. Could my dual battery system have anything to do with it. cause it seems to be getting worse, it feels as though the car loses power and the brakes are slowly engaging so it is not responsive. To get rid of it, i have start my car so as to crack the second battey and then start my car fully.

        Comment


        • #5
          Re: cruise control turns off and wont turn back on

          No I don't think so, but you could unplug it for a while yo see if it makes a difference....

          When the car is in third are you having to push it to maintain 100? If the car was suffering from low power, the auto may behave as though you have a huge load on and not want to change to overdrive due to the high throttle input.

          Not going into 1st however points to a gearbox problem.....
          Richard
          2011 GXL TD Auto Prado Silver

          Comment

          canli bahis siteleri bahis siteleri ecebet.net
          mencisport.com
          antalya escort
          tsyd.org deneme bonusu veren siteler
          deneme bonusu veren siteler
          gaziantep escort
          gaziantep escort
          asyabahis maltcasino olabahis olabahis
          erotik film izle Rus escort gaziantep rus escort
          atasehir escort tuzla escort
          sikis sex hatti
          en iyi casino siteleri
          deneme bonusu veren siteler
          casibom
          deneme bonusu veren siteler
          deneme bonusu veren siteler
          betticket istanbulbahis
          Working...
          X