VSC no longer exists ? Help ME! Need Super Technical Help

Ok so I did both versions. I did it while moving on the way home and that did nothing for th eissue.

Then today I did the stopped for 10 seconds and again it did nothing.

 

I should clarify.... The problem still happened.

 

Hmmmm. OK, so it doesn't appear to be a dead circuit board. It sounds like it IS working, just not as desired or intended.

So if the VSC computer is not visible to the test equipment, I'd tend to suspect user error somewhere in the plug in or configuration of the test system and interface.

 

Yikes. That's NOT what I would have expected.

EDIT. Did it at least light up the dashboard light to indicate that it had been disabled?

 

Interesting.... Do you know the process? From what I read it was fairly strait forward, plug, load, scan, scroll to reset and done?

I do have the technical issued paperwork on how to do it but I wonder, because the tech was looking at my paperwork and did what he read, maybe he is just a dummy?

Would an obdII scanner pick it up or have the option to at least show it?

 

What I expected was I shut it off and no issue and its something that doesnt bother me, but what I seem to be experiencing is that it will not allow this. It is almost as if the computer is on lock down doing as it pleases and my buttons and stuff will not communicate. My assumption at that point is flash the computer and reset but it cant be reached.....


It would be awesome if it just fried it self, gave no indication and allowed me to never have VSC but instead I got the only tacoma that has over active vsc and its trying to kill me

 

My lunchbreak is over - gotta get back to work. I'll check in on this thread again this evening.

 

Thanks

 

Anyway to disable VSC entirely, as in remove it from the system?

Sorry about all this Josh. What a PITA.

Hope you get it solved quickly and easily.

 

That's what I was thinking...maybe remove the VSC fuse?

 

Well I did the unplug and will see what happens, but not leaving for another 20 minutes.

 

I am going to try with it out and unplugged from master here in about 20 minutes

 

Ok I just did a bunch of parkinglot stuff and the VSC light (VSC) will not come on. I have both traction lights on and no locking of breaks yet. However I have yet to road test as there are too many vehicles at the moment.

 

dam and thats the way they treat you and you work there

 

I'm quite sure all this shit is tied together. ABS/A-Trac/VSC. its all part of the same system. Almost sounds like maybe your A-trac is stuck on some how. it detects slippage in one wheel while turning (one wheel going faster than the other) and applies the brakes. Do you have A-Trac? maybe shift to 4-low and try cycling everything.

 

Not sure I have anything else really wise to say.

If you want to disable it without affecting ABS my best guess would be to disconnect the yaw sensor. That would probably leave both the VSC light and the check-engine light on all the time, though (guess.)

Still can't get over plugging in test equipment and not registering the presence of the VSC computer as expected. That would seem either to be a serious system fault or user-error on connecting the system. Since I'm not a mechanic, I can't offer any particular insight on that.

Again, if it were me I'd look up that section in the factory shop manual for my particular year, and read it carefully. Then I'd double check it as the mechanic went through those steps.

 

I agree. I am going to have the senior tech run through it with me while I am there and see if we can figure it out. I read the toyota manual and watched the tech diagnose and he did nothing wrong. But who knows.

 

So I went for a drive up the same highway (4 times) that the issue presented on. I tried turning off the VSC by doing it via a push of the button, then later by doing it the 3 second 10 second hold down method, then lastly by disconnecting it from the master. I had the lock up problem every time except for the final disconnect.

What I read is that it is going to turn on when the rear wheels slip in 2 wheel and when any wheel slips in 4 wheel.

My last guess is that the computer is just done for some reason and needs to be hit with a hammer lol.

The good news is that I was able to drive home without the vsc on by disconnecting it totally, even though I am sure this will have bad effects, its only for the next 2 days. And the good news is I was having a blast kicking the back end out ! lol

 

When it comes to a warranty claim:

Final thought:

Seems to me undesired activation can be considered a side-effect of a suspension and tire modification. When this occurs, dealer can reasonably say "well, your geometry and tire size changes are messing it up. Return suspension and tires to stock, then come talk to us."

However, inability to disable the system via holding the switch down when vehicle is not moving, and inability to get a diagnostic read when hooked up to computer suggest an electronic system fault that cannot reasonably be blamed on suspension changes.

 

True but they can reufuse to warranty the item until truck is returned to stocck form, and delership is not goin to put used parts back so expensive path either way unless he can convince dealership it was them who broke computer.
That or OP can just drive that thing with out it.
This is why in long term ownership those electronic items are just pain in the @$$ and its better not to buy used trucks with too much of electronics.