2012 Toyota Tundra 5.7 SR5 Towing Package
Hello, we have just purchased a new Toyota Tundra to pull our 25 foot Avion TT that weighs 7800 lbs (gross), We tried using tow haul switch and it seems to change back and forth even with a small hil...
Forum Discussion
To the OP, 5th and 6th gear are essentially overdrive gears. My suggestion is that you place your transmission in S mode, click it to 5th gear and put it in tow/haul mode. Perhaps S mode locked out tow/haul in earlier trucks, but I know my 2010 still allowed use of tow/haul in S mode.
By putting it in 5th gear it keeps the trans from shifting into 6th gear, which is a very high ratio gear. This prevents your trans from constantly shifting between 5th and 6th gear. That keeps your trans heat down, keeps wear and tear on the drivetrain down and helps improve your fuel economy.
When approaching a steeper incline I like to manually downshift before the hill and get my rpm's up prior to the hill.
By putting it in 5th gear it keeps the trans from shifting into 6th gear, which is a very high ratio gear. This prevents your trans from constantly shifting between 5th and 6th gear. That keeps your trans heat down, keeps wear and tear on the drivetrain down and helps improve your fuel economy.
When approaching a steeper incline I like to manually downshift before the hill and get my rpm's up prior to the hill.
