Tow Haul?!

Hi,

I can not find Toyota's recommendation on how to use tow haul mode. I used it last year and kept my 2019 4x4 OR in 4th, out of OD, the entire time. I recall some saying not necessary but not sure.....

Everyone has an opinion but what does Toyota say? Does tow haul keep it out of OD except with cruising with no/low load?

It's a drag because THE quickest way to fry a tranny is towing in OD....

References would be welcomed addition!

Thanks!

 

From what I know the Tow Haul Mode will keep the engine at higher revs between shifts. This keeps the engine from lugging. You could also use the S mode to achieve the same results as the Tow Haul mode.

 

4.30 factory gearing allows you to tow well in OD...than enable tow/haul mode and you become a work-horse +

 

I love Tow Haul It’s a cheap man’s super charger !!

That combined with 4.30 rear end and cheap gas is a beautiful thing.

 

Here is the Quick Reference Manual page that addresses Tow Haul Mode

 

“Tow/Haul” mode is ideal for use when carrying heavy loads.
When the TOW/ HAUL switch is pressed, throttle response and transmission control are optimized for the high performance operation. As fuel economy is reduced while in “Tow/ Haul” mode, deactivating when driving without a load is recommended.
‡ Upshifts occur at higher engine speeds to expand the use of lower gear ranges, enhancing power performance during towing and preventing repeated gear changes.
‡ Downshifts occur at a greater accelerator pedal angle to allow the vehicle to stay in a higher gear, reducing repeated gear changes.
‡ Downshifts occur at a lower accelerator pedal angle to allow the vehicle to stay in a lower gear, enhancing towing ability.
‡ When the accelerator pedal is wide open, upshift timing is optimized to effectively use the maximum engine power range available. When Tow/Haul is engaged, the opening angle of the electronically controlled throttle is wider for any given accelerator pedal position than normal, enhancing acceleration feeling and response.
‡ During uphill driving, the gear position is held to prevent repeated upshifting.
‡ During downhill driving, downshifting to lower gears will occur to effectively use engine braking. Refer to the Owner‘s Manual for more details on this system before attempting to use it.

 

Here is the Tow/ Haul section in the manual