Toyota land cruiser prado Owner's Manual page 157

Four−wheel drive system—
(a) Four−wheel drive control
(lever/button type)
Use the four−wheel drive control lever
and center differential lock button to
select the transfer and center differen-
tial modes.
The "H" and "L" position of the four−wheel
drive control lever provides either lock or
unlock mode of the center differential de-
pending on the center differential lock but-
ton position.
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Use the center differential lock system if
your wheels get stuck in a ditch, or when
you are driving on a slippery or bumpy
surface. When the center differential is
locked, the vehicle stability control system
is automatically turned off and the center
differential lock and "VSC OFF" indicator
lights come on because the function that
controls engine performance
with the process of freeing your wheels.
NOTICE
As soon as the center differential lock
switch is turned on, the "VSC OFF"
indicator light comes on. After the
wheels are out of the ditch or off the
slippery or bumpy surface, turn the
center differential lock switch off.
Make sure that the center differential
lock indicator light and vehicle stabil-
ity control system off indicator light
turn off.
"H" (high speed position, center differ-
ential unlocked): Lever at "H", center dif-
ferential lock button left out
Use this for normal driving on all types of
roads, from dry hard−surfaced roads to
wet, icy or snow−covered roads. This
position gives greater economy, quietest
ride, least wear and better vehicle control.
"H" (high speed position, center differ-
ential locked): Lever at "H", center differ-
ential lock button pushed in
interferes
Use this for greater traction when you
experience a loss of power, such as
wheel slipping, in the center differential
unlock mode.
"N" (neutral position): Lever at "N"
No power is delivered to the wheels.
The vehicle must be stopped.
"L" (low speed position, center differen-
tial unlocked): Lever at "L", center differ-
ential lock button left out
Use this for maximum power and traction.
Use this for climbing or descending steep
hills, off−road driving, and hard pulling in
sand or mud.
In this mode, the braking feeling that oc-
curs when the wheels are negotiating a
sharp corner is further reduced than in the
"L" (low position, center differential locked)
mode.