Toyota Land Cruiser Prado Owner's Manual page 135

3-1. Using off-road driving systems
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Speed modes
● LO (low mode)
Effective when traveling on rocks, or descending a slope of
mogul and rubble.
● MED (medium mode)
Effective when ascending a slope of mogul.
● HI (high mode)
Effective when ascending a slope of mogul and rubble, or
traveling on snow, dirt, mud, sand, gravel, grass etc.
The position between low and medium modes and the position
between medium and high modes can also be selected.
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: Depending on the road surface, may not be the most effective.
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