See also:

TOW/HAUL
To reduce potential for automatic transmission overheating, press the TOW/HAUL button when driving in hilly areas or select the 2 range on more severe grades. Refer to “Automatic Transmissionâ ...

Engine
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HSA On Automatic Transmission Vehicles
The system will work in REVERSE, and all forward gears on vehicles equipped with an automatic transmission. The system will not activate if the vehicle is placed in NEUTRAL. ...