Toyota 2008 4Runner Owner's Manual page 185

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Use this for maximum power and traction.
Use this for hard pulling in situations the
vehicle cannot negotiate even in the "L4"
(low speed position) and center differential
unlocked mode. Also, using this mode
when driving down steep off−road inclines
will help contribute to increased vehicle
stability.
The indicator light tells when the differen-
tial lock is engaged. Note that the differ-
ential is not still locked as long as the
indicator light remains off.
When the operation is not completed, the
indicator blinks. If the indicator light does
not go off when you push the center
differential lock switch to unlock the cen-
ter differential, drive straight ahead while
accelerating or decelerating, or drive in
reverse.
If the center differential lock system op-
eration is not completed within 5 seconds
while the cruise control system is set,
cancel the cruise control system. To can-
cel the cruise control system, see "Cruise
control" on page 203 in Section 1−7.
If the indicator blinks even if doing so,
contact your Toyota dealer as soon as
possible. There may be a trouble in the
center differential lock system.
170
See "(b) Shifting procedure" for further in-
structions.
(b) Shifting procedure
SHIFTING BETWEEN "H4" (UNLOCKED)
AND "H4" (LOCKED)
To shift between unlock and
modes in "H4", push the center differen-
tial lock switch.
SHIFTING BETWEEN "L4" (UNLOCKED)
AND "L4" (LOCKED)
To shift between unlock and
modes in "L4", push the center differen-
tial lock switch.
SHIFTING BETWEEN "H4" AND "L4"
To shift from "H4" to "L4", bring the
vehicle to a complete stop with the brake
pedal held down with your foot, shift the
automatic transmission selector lever into
"N" and push and turn the four−wheel
drive control switch knob fully clockwise.
To shift from "L4" to "H4", bring the
vehicle to a complete stop with the brake
pedal held down with your foot, shift the
automatic transmission selector lever into
"N" and turn the four−wheel drive control
switch knob fully counterclockwise.
lock
lock