air suspension TOYOTA 4RUNNER 2006 N210 / 4.G Owners Manual

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viii
Installation of a mobile
twoway radio system
As the installation of a mobile two −way radio system in
your vehicle could affect electronic systems such as fol-
lows, be sure to check with your Toyota dealer for precau-
tionary measures or special instructions regarding installa-
tion.
 Multiport fuel injection system/sequential multiport fuel
injection system
 SRS airbag system
 Seat belt pretensioner system
 Traction control system (two −wheel drive models)
 Active traction control system
(four −wheel drive models)
 “AUTO LSD” system (two −wheel drive models)
 Vehicle stability control system
 Downhill assist control system
(four −wheel drive models)
 Hill −start assist control system
 Rear height control air suspension
Tire pressure warning system
 Cruise control system
 Anti −lock brake system
 Electronic throttle control system
Tires and loading on your
To y o t a
Underinflated or overinflated tire pressure and the
excess load may result in the deterioration of
steering ability and braking ability, leading to an
accident. Check the tire inflation pressure periodi-
cally and be sure to keep the load limits given in
this Owner ’s Manual. For details about tire inflation
pressure and load limits, see pages 425 and 350.

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2
1. Side vents
2. Side defroster outlets
3. Instrument cluster
4. Center vents
5. Personal lights
6. Electric moon roof switch
7. Garage door opener
8. Auxiliary boxes
9. Glove box
10. Automatic transmission selector lever
11. Power door lock switches
12. Power window switches
13. Seat heater switches
14. Rear height control air suspension switch
15. Rear vents
16. Trash holder
17. Toyota electronic modulated suspension mode select switch
18. Downhill assist control switch
19. Front cup holders
20. Tilt steering lock release lever
Instrument panel overview

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10
∗
1: For details, see “Service reminder indicators and warning
buzzers” on page 147 in Section 1 −6.
∗
2: For details, see “Roll sensing of curtain shield airbags off
switch” on page 95 in Section 1 −3.
∗
3: If this light flashes, see “Four −wheel drive system” on page
164 in Section 1− 7.
∗
4: If this light flashes, see “Rear height control air suspension”
on page 184 in Section 1 −7.
∗
5: If this light flashes, see “Cruise control” on page 195 in
Section 1 −7.
Cruise control indicator light∗
5
Height control “OFF” indicator light∗4
Height control indicator lights

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Do not put anything or any part of
your body on or in front of the
dashboard or steering wheel pad
that houses the front airbag sys-
tem. They might restrict inflation or
cause death or serious injury as
they are projected rearward by the
force of the deploying airbags. Like-
wise, the driver and front passenger
should not hold objects in their
arms or on their knees.
Do not modify or remove any wir-
ing. Do not modify, remove, strike
or open any components such as
the steering wheel pad, steering
wheel, column cover, dashboard
near the front passenger airbag,
front passenger airbag or airbag
sensor assembly. Doing so may pre-
vent the front airbag system from
activating correctly, cause sudden
activation of the system or disable
the system, which could result in
death or serious injury.
Failure to follow these instructions
can result in death or serious injury.
Consult your Toyota dealer about any
repair and modification.
If you wish to modify your vehicle for
a person with physical disability, con-
sult your Toyota dealer. It may dan-
gerously interfere with the SRS front
airbags operation.NOTICE
Do not perform any of the following
changes without consulting your
Toyota dealer. Such changes can in-
terfere with proper operation of the
SRS front airbag system in some
cases.
 Installation of electronic devices
such as a mobile twoway radio,
cassette tape player or compact
disc player
 Modification of the suspension sys-
tem
 Modification of the front end struc-
ture
 Attachment of a grille guard (bull
bar, kangaroo bar, etc.), snowplow,
winches or any other equipment to
the front end
 Repairs made on or near the front
fenders, front end structure, con-
sole, steering column, steering
wheel or dashboard near the front
passenger airbag

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OPERATION OF INSTRUMENTS AND
CONTROLS
Ignition switch, Transmission and Parking brake
Ignition switch 158
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . .
Automatic transmission 159
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
.
Four −wheel drive system 164
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
Traction control system 170
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. .
Active traction control system 172
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
“AUTO LSD” system 174
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . .
Vehicle stability control system 177
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Downhill assist control system 179
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hill −start assist control system 182
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear height control air suspension 184
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire pressure warning system 190
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking brake 194
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
Cruise control 195
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
SECTION 1 7

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If there is any abnormality in the sys-
tem, the “VSC TRAC” warning light will
come on.
If the system malfunctions, the “VSC
TRAC” warning light will come on.
If the “VSC TRAC” warning light comes
on, there may be an abnormality in any
of the following systems in addition to the
hill−start assist control system.
Downhill assist control system
(four −wheel drive models)
Traction control system
(two −wheel drive models)
Active traction control system
(four −wheel drive models)
Vehicle stability control system
“AUTO LSD” system
(two −wheel drive models)
“VSC TRAC” warning light
When the system is normal and the igni-
tion key is turned to “ON”, the warning
light will come on and will go off after a
few seconds.
It is not a malfunction that the warning
light may stay on for 60 seconds after the
ignition key is turned to “ON”.
Depressing the brake pedal repeatedly
may turn on the light. It is normal if it
goes out after a few seconds.
If the warning light comes on while driv-
ing, the system does not work. However,
as normal braking operates when being
applied, it is no problem to continue your
driving.
In the following cases, contact your Toyota
dealer:
The warning light does not come on
after the ignition key is turned to “ON”.
The warning light remains on after the
ignition key is turned to “ON”.
The warning light comes on while driv-
ing.
This rear height control air suspension
controls the vehicle height depending
on the vehicle driving conditions. Select
your desired height among the “HI”
(high), “N” (normal) and “LO” (low)
modes with the height select switch.
(a) Vehicle height modes
“N” (normal) mode—
The vehicle height in this mode is stan-
dard. Regardless of the number of occu-
pants or the luggage loading condition, the
vehicle height is always automatically ad-
justed to a fixed height in this mode while
the engine is running.
This mode is suitable for ordinary driving.
Rear height control air
suspension

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NOTICE
If the vehicle height is changed fre-
quently when the vehicle is heavily
loaded, the compressor may over-
heat, causing the vehicle height ad-
justment operation to stop.
 Before you lower the vehicle height
with the height select switch, check
under the vehicle to make sure
nothing to damage the vehicle or
no one to be injured is there and
that the underbody of the vehicle
does not touch the ground.
 After unloading, the height of a ve-
hicle equipped with the rear height
control air suspension becomes
slightly higher than the normal ve-
hicle height. Take sufficient care
where the overhead height is re-
stricted.
 Do not select the “LO” mode in the
bumpy roads. If the underbody of
the vehicle touches the rugged road
surface, the vehicle may be dam-
aged.
(d) Turning off the rear height control
air suspension
To turn off the rear height control air
suspension with the vehicle stopped,
push the “HEIGHT CONTROL OFF”
switch. The height control “OFF” indi-
cator light comes on and the vehicle
height is fixed in the same mode as the
height control switch is pushed.
This status is memorized in the system
even after the engine is stopped.
If you push the switch again, the height
control “OFF” indicator light goes out and
the rear height control air suspension is
turned on.
Even after the rear height control air sus-
pension is turned off with the “HEIGHT
CONTROL OFF” switch, if the vehicle
speed exceeds 30 km/h (19 mph), the
rear height control air suspension automat-
ically selects the “N” mode.

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CAUTION
If you drive through deep water over
about 700 mm (28 in.) in depth, put
the vehicle height in the “HI” mode
with the height select switch and then
turn off the rear height control air
suspension by pushing the “HEIGHT
CONTROL OFF” switch.
NOTICE
When jacking up or insta lling tire
chains, be sure to turn off the rear
height control air suspension by
pushing the “HEIGHT CONTROL
OFF” switch and stop the engine.
Otherwise, the vehicle height may
change because of the automatic
leveling function, resulting in an un-
expected accident.
 If your vehicle must be towed, put
the vehicle height in the “N” mode
and turn off the rear height control
air suspension. Otherwise, the ve-
hicle height may change because of
the automatic leveling function, re-
sulting in an unexpected accident.
If your vehicle gets ditched, turn off
the rear height control air suspen-
sion with the “HEIGHT CONTROL
OFF” switch. Otherwise, the vehicle
height may change because of the
automatic leveling function resulting
in an unexpected accident.
(e) Height control indicator lights
1. Height control indicator lights
2. Height control “OFF” indicator light
When the ignition switch is turned on, all
the indicator lights come on. The indicator
light showing the present mode only re-
mains on and all other lights go off after
a few seconds. This means the system
operates correctly.

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If you change the vehicle height mode,
the indicator lights change as follows:
When changing the vehicle height from
the “N” mode to “HI”:
1. The “N” mode indicator light goes off and the “HI” mode indicator light blinks.
2. After the vehicle height control reaches the “HI” mode, the “HI” mode indicator
light remains on.
If the underbody of the vehicle has
touched the surface on bumpy roads or
the area around the rear suspension is
coated with ice, the vehicle height cannot
be lowered with the height select switch.
The height control indicator lights change
as follows: 1. The present mode indicator light goes
off and the selected mode indicator
light blinks.
2. The selected mode indicator light goes off. (The vehicle height does not
change.) The present mode indicator
light comes on again.
In this case, even if the vehicle is moved
to its usual location or the ice is removed
and the height select switch is pressed,
vehicle height control cannot be operated.
Turn off the engine once and then restart
it.
Height control “OFF” indicator light:
When the ignition switch is turned on, this
light comes on. If it goes out after a few
seconds, the rear height control air sus-
pension operates correctly. If you push the
“HEIGHT CONTROL OFF” switch, the rear
height control air suspension is turned off.
The height control “OFF” indicator light
comes on.
In the following cases, there is a problem
somewhere in the rear height control air
suspension. Although there is no problem
to continue normal driving, have the rear
height control air suspension checked by
your Toyota dealer as soon as possible.
The height control “OFF” indicator light
does not come on when the ignition
switch is turned on.
The height control “OFF” indicator light
blinks.
(f) Parking and stopping tips
If you immediately stop the engine to park
the vehicle after off −road driving, the ve-
hicle height is lowered slightly as the ve-
hicle becomes cool. When parking, make
sure there is nothing that will be in con-
tact with the underbody of the vehicle.
When you start the engine, the vehicle
returns to the previous height.
If you park the vehicle for a long time,
the vehicle height may be gradually low-
ered. When parking for a long time, make
sure there is nothing that will be in con-
tact with the underbody of the vehicle.
When you start the engine, the vehicle
returns to the previous height.
If you stop the engine, the vehicle height
may change in accordance with the
change in the temperature. When you
start the engine, the vehicle returns to the
previous height.

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(g) Rear height control failure warning
If there is a problem somewhere in the
rear height control air suspension, the “N”
mode is automatically selected. If this oc-
curs, the height control “OFF” indicator
light blinks and the vehicle height control
cannot be activated until the malfunction
is corrected. If this is the case, bring your
vehicle to your Toyota dealer as soon as
possible and have it checked. The tire pressure warning system is de-
signed to provide warning when tire
inflation pressure of one or more of
your tires (including the spare tire) is
low. The low tire pressure warning light
comes on to inform you that low tire
inflation pressure may hamper driving.
Ty p e A
Ty p e B
Tire pressure warning
system—