Quote:
Originally Posted by TEujunga
Totally normal. All part of Toyota's "grade logic" programming for the trans. In this particular case (cresting a hill), the trans will hang onto 4th for way longer than necessary because it "thinks" the uphill grade might resume, requiring another downshift into 4th. The programming would rather stay in 4th too long and be absolutely sure you're done climbing hills than shift into 5th too early and start having to "hunt" between 4th and 5th. And yes, trying to "tell" it to shift into 5th using S mode will have no effect in this scenario.
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Really great info. Thanks for confirming this is normal. I'm so paranoid about my transmissions in my vehicles because I've blown so many over the years.
I guess the next question is when is the best mileage to change the transmission fluid? Lol
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