446
4-5. Using the driving support systems
■ Automatic change in vehicle height
when in L mode
If the vehicle speed drops to 7 mph (12
km/h) or less, N mode is automatically
resumed.
■ Extra high mode
If the vehicle becomes stuck, extra high
mode may be automatically selected when
the vehicle height is in H2 mode with the
four-wheel drive control switch in the L4
position.
The vehicle height is raised to 0.8 in. (20
mm) higher than the H2 mode height, or
slightly higher.
● Extra high mode will change back to H2
mode when:
• The vehicle speed exceeds 6 mph (10
km/h)
• The four-wheel drive control switch is
shifted to H4.
● If you press the height select switch
when in extra high mode, H1 mode
is selected.
● Extra high mode cannot be manually
selected.
■ Turning off the height control
● The system will remain off until the height
control OFF switch is pressed again,
even if the power switch is turned off.
● Even if the system is turned off, the sys-
tem will intervene automatically if the
vehicle speed exceeds the following.
• 18 mph (30 km/h) with H2 or L mode
• 62 mph (100 km/h) with N or H1 mode
■ Automatic leveling function
The vehicle is adjusted to a fixed height for
each mode, regardless of the number of
occupants and the luggage load.
■ When the vehicle is stopped during
driving
The activation of the automatic leveling
function may cause the vehicle height to
change. This is not a malfunction.
■ If the vehicle height does not change
If the vehicle is loaded too heavily, or the
undercarriage has come into contact with
the road surface, the vehicle height cannot
be raised/lowered.
● In the following situations, the vehicle is
loaded too heavily. Take extra care when
driving in this condition.
• If the vehicle height cannot be raised
when in N mode, and “L” appears on the
multi-information display
• If the vehicle height cannot be raised
when in H1 mode, and “L” or “N” appears
on the multi-information display
• If the vehicle height cannot be raised
when in H2 mode, and “L” or “N” or “H1”
appears on the multi-information display
● If the vehicle height cannot be raised
even after unloading the vehicle, press
the height select switch then press
to .
■ In the following cases the AHC will not
operate
● The AHC display on the meter will flash.
● Vehicle height control has not been fre-
quently used.
● The suspension fluid temperature is
lower than -22°F (-30°C).
● There is ice on the suspension.
● Driving on bumpy roads which may
cause the suspension to fully elongate.
● If the steering wheel is turned more than
approximately 3/4 of a revolution with
the center differential lock system acti-
vated (P.449) and H4 mode selected
with the four-wheel drive control switch
(P.448).
■ Cold weather operation
● It may take longer for the vehicle height
to change if the suspension fluid tem-
perature drops below 5°F (-15°C).
● The AHC does not operate when the
suspension fluid temperature drops
below -22°F (-30°C). In this case, even if
the height select switch is pressed, the
vehicle height will not change. Once the
vehicle has been driven for a short time
and the suspension fluid has been
warmed to within normal operating limits,
the AHC will begin operating and the
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