TOYOTA 2010 Highlander - Manual (Page 210)

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2-4. Using other driving systems
2
Wh
en drivin
g
CAUTION
■
Conditions which may affect the downhill assist control system opera-
tion
●
Do not rely too heavily on the downhill assist control system. On extremely
steep inclines, icy surfaces or muddy roads, the vehicle may slip and the
system may not be able to maintain the constant low vehicle speed of
about 3 mph (5 km/h), leading to an accident causing death or serious
injury.
●
Do not shift the shift lever to R while driving forward, or to D while driving
backward. Doing so may cause the wheels to lock up, leading to an acci-
dent causing death or serious injury. In addition, excessive stress will be
applied to the automatic transmission, possibly resulting in damage.