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Discussion Starter #1
I searched but no term I used would pull up an answer:

I was playing around doing burnouts and roll-on accelerations today. I had all the nannies turned off and tow/haul mode on. Every time I'd get into it pretty good with some on and off throttle surges the transmission would lock, I think, in 2nd gear. (It was near redline at 60mph.)

I was not in sequential mode, I made sure of that, and popping the transmission back and forth between modes eventually got the transmission to act normal.

Have I broken something?
 

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I have the same problem... It only happens with VSC OFF. It's getting worse for me, it used to happen once in awhile, then more, and now everytime VSC is turned off. Mine gets stuck in 3rd and 4th, switching to Sequential and back to D dosen't work for me. I have to manually shift it up to 6th and then back to D. It's freaking annoying! :mad:
 

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Normal ops with all the nannies turned off. It's a querk of the 6 speed that "doesn't exist" according to Toyota.

With that said...mine hasn't done it...

yet.
 

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Discussion Starter #4
Maybe I'll try disconnecting the battery for a few minutes to reset the memory or something.

I wonder if that will mess anything up? (Other than my radio station presets.)
 

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Maybe I'll try disconnecting the battery for a few minutes to reset the memory or something.

I wonder if that will mess anything up? (Other than my radio station presets.)
It won't mess anything up, but the general consensus on the various Toyota foums is that, it does nothing to help with the shifting when the nannies are off. The problem seems to lie in the programming between the "nannies" and the transmission when all the "nannies" are turned off (with the shifter in the "D" position). I speculate that Toyota won't fix it (regardless of how many of us complain) because it would require re-programming either the nannies or the transmission or both. Not cheap.
 

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F&@k Y'all, I'm from Texas
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Normal ops with all the nannies turned off. It's a querk of the 6 speed that "doesn't exist" according to Toyota.

With that said...mine hasn't done it...

yet.
What he said, except mine does it and won't go past 4th gear. But it never seems to happen with the service guy in the truck.

I have found that if I turn all the nannies off and put it in S6, then I have no problems.
 

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Would it be bad for the engine/ tranny if you turn off vsc, and just keep it in sequential 6th gear the whole time while driving (even during slow driving & stop and go traffic)?
 

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Would it be bad for the engine/ tranny if you turn off vsc, and just keep it in sequential 6th gear the whole time while driving (even during slow driving & stop and go traffic)?
No. The engine and transmission could care less if you have the VSC on or off. Keeping it in S6 will allow the transmission to shift as if you had it in "D". Remember, in sequential shifting the truck will shift normal up to the gear that you select. Stop and go traffic will have no ill effects while in S6 as the truck will shift up to 6th gear from 1st like normal. Hope that makes sense.

The only thing that it's going to do is take a few seconds extra after starting the truck.
 
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