Tow/Haul Switch; Engine Control - Toyota TUNDRA 2018 Quick Reference Manual

TOW/HAUL switch

Floor shift type
"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.

ENGINE CONTROL

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.
ENHANCED SHIFT CONTROL
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.
UPHILL/DOWNHILL SHIFT FEATURES
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.
(if equipped)
System ON/OFF
Column shift type
23