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Thread: Prado VSC

  1. #1
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    Post Prado VSC

    Hi All,

    I just got a 2005 Prado VX diesel from an Automark dealer, 165k km on clock and is in very good condition.

    The problem I have is that the VSC comes in randomly (but not consistently), then only the brakes are applied tot he right front wheel.....very dangerous at 120km\hr on freeway..... The VSC light comes on and there are a couple of beeps.

    As murphy would have it, it didn't do it when I booked it into Toyota and they didn't find anything....no error codes or anything, they just cleaned the sensors and re-calibrated the system....this hasn't helped.

    Anyone had similar problems or advise plz....

  2. #2
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    Default

    Well still no luck with Toyota finding the problem....told them to swop the left and right front speed sensors around and give the vehicle back for me to test....if problem follows the sensor, then that must be the fault.....we wait and see

  3. #3
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    howzit bigfoot

    I also had a prado with the same problem - I also took it in to Toyota Nelspruit a few times but they never got to the bottom of this. Then they tested the battery and discovered that one of the cells were dead and every now and again a low surge of power would go through and the Prado's ecu would 'reset' momentarily and that caused the VSC to kick in and go crazy. Just test your battery, might be as simple as mine, never had a days problem after replacing with a new one.

  4. #4
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    Default Prado VSC

    Well, its been almost a year now and eventually we are getting some where with the intermittent activation of the vsc on the right front wheel while driving.

    This problem has been so intermittent and sometimes takes several weeks for it to repeat itself. The vsc started to kick in a lot more often now and on Thursday did it with the Toyota mechanic and he had the data logger connected...... Still cannot say whats wrong, so they sent all data to Toyota for analysis.....am very interested to find out what this problem is and best of all, the Automark dealer I bought the car from has committed to fix the problem.

    So lets see....

  5. #5
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    Thumbs up Prado VSC

    Ok, so the Toyota factory came back and advised that the master cylinder with all the electronics on it needs to be replaced....R16000 including labor to do the job....man I'm lucky Automark are gonna cover this repair, even after having the vehicle for nearly a year.

    Round of applause for the Pongola Automark Dealership , now the trick is to see how long it takes to get the part.

  6. #6
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    Eina!

    I thought it being the one wheel only, it will be the caliber or something at the wheel acting up.

    You're lucky they are paying...
    Pajero DID GLS LWB - 2004 Gen3
    Audi A4 1.8T - B8

  7. #7
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    Default Prado VSC

    Ok updated price including parts and labor.....R23855....eish...I hope for their sake that is the part causing the problem.

  8. #8
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    Funny thing.

    My Fortuner's first issue was exactly this at around 1000km. Also kicked in at around 120km/h on the highway and just after 5pm with a lot of cars on the road between Jhb and Pta. Very scary experience.

    According to Toyota it was a loose earthing wire.

    Hope your problem is sorted.

    Sent from my GT-P5100 using Tapatalk 2
    Currently own: 2018 Ford Ranger 3.2 TDCI A/T 4x4 Double Cab XLT

    Then followed a 2009 Toyota Prado 4.0V6 (Nice car), after which a 2008 Pajero 3.8 V6 SWB followed (which I will forever miss)
    Fourth 4x4: 2013 Ford Ranger 3.2 TDCI 4x4 Manual double cab
    Third 4x4: 2013 Toyota Fortuner 3.0 D4D 4x4 Manual
    Second 4x4: 2010 Mitsubishi Triton 3.2 Manual 4x4 Double Cab
    First 4x4: 2010 Nissan NP300 Hardbody 2.4 4x4 D/C

  9. #9
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    my prado 90 did the same thing with the front brakes coming on by itself.sac replaced seals on the master cylinder and its fine now.

  10. #10
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    I had the similar VSC issues with my 05 GX. Bit of a story behind it. Not long after i bought the vehicle 2nd hand from the local automark dealer, i noticed a rattle from within the steering column. Took it to so-called steering and suspension specialists in PMB, who failed to sort it out, eventually purchased a new steering shaft, which required removal of the steering wheel. Thats when the problems with the VSC started. The Prados have a "yaw" sensor in the steering wheel, it sits behind the airbag. The yaw sensor is the device that figures out the car is in a skid, and applies the brakes selectively to prevent the skid (left front, right rear etc). If the steering wheel is removed from the shaft, and not replaced EXACTLY as it was previously aligned, the yaw sensor can go out of alignment. What i guess happens then is that as soon as the vehicle is in a particular situation , i.e. turning slightly, braking etc, the out of alignment yaw sensor thinks that the car is in an exaggerated skid, and starts applying the selective braking through the VSC system. Eventually, after many trips to the local Toyota dealer, whose mechanic had no clue (it even locked up the brakes when he was driving it), i parked it on a level piece of ground, wheels straight ahead, disconnected the battery, took off the steering wheel, re-aligned the yaw sensor with Top dead centre, then re-connected the battery. This then re-calibrates the yaw sensor. Since then i have had no more VSC problems. We know the VSC works as we often drive on a muddy road in summer, resulting in the odd bit of drift, which the VSC sorts out very quickly.
    i dont know if this is the AA recommended way of sorting it out, but it worked for me.
    Last edited by CaptainCol; 2014/09/27 at 07:04 AM.

  11. #11
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    Yes I also had yaw sensor issues after an Indy replaced some steering parts.

    I must say Toyota reset the yaw sensor in one visit for a minimal cost.
    Zerubbabel the 2008 4.8 Patrol
    Nothing, not even a mighty mountain, will stand in Zerubbabel’s way!

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