Toyota Tacoma 2018 Owner's Manual page 203

Selecting power mode
Use when high levels of response and feeling are desirable, such as
when driving in mountainous regions or when pulling a trailer.
Press the "ECT PWR" button to select power mode.
The "ECT PWR" indicator comes on.
Press the button again to cancel power mode.
Type A
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Type C
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4-2. Driving procedures
Type B
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