2003 TOYOTA 4RUNNER air suspension

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2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
Spark ignition system of your
To y o t a
The spark ignition system in your Toyota meets all require-
ments of the Canadian InterferenceCausing Equipment
Standard.
Installation of a mobiletwoway radio system
As the installation of a mobile twoway 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 (twowheel drive models)
 Active traction control system
(fourwheel drive models)
 Vehicle stability control system
 Downhill assist control system
(fourwheel drive models)
 Hillstart assist control system
 Rear height control air suspension
 Cruise control system
 Antilock brake system
 Electronic throttle control system

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2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
Cruise control indicator light∗
5
Center differential lock indicator light∗3
(fourwheel drive models) Automatic transmission indicator lights
(5speed)
Traction control system off indicator light
(twowheel drive models) Vehicle stability control system off indicator light
(fourwheel drive models)
Slip indicator light
Turn signal indicator lights
Low speed fourwheel drive indicator light∗ 3
(fourwheel drive models)
Downhill assist control system indicator light
(fourwheel drive models)
Height control “OFF” indicator light
∗4
Height control indicator lights
∗1: For details, see “Service reminder indicators and warning
buzzers” on page 117 in Section 15.
∗2: If this light flashes, see “Fourwheel drive system” on page
141 in Section 16.
∗3: If this light flashes, see “Fourwheel drive system” on page
138 and on page 141 in Section 16.
∗4: If this light flashes, see “Rear height control air suspension”
on page 158 in Section 16.
∗5: If this light flashes, see “Cruise control” on page 164 in
Section 16.
Headlight high beam indicator light
Automatic transmission indicator lights
(4speed)
Fourwheel drive indicator light∗2
(multimode fourwheel drive models)

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2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
NOTICE
Do not perform any of the following
changes without consulting your
Toyota dealer. Such changes can
interfere with proper operation of the
front seat belt pretensioners in some
cases.
Installation of electronic devices
such as a mobile twoway radio,
cassette tape player or compact
disc player
 Repairs on or near the front seat
belt retractor assemblies
 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 or con-
sole
This front seat belt pretensioner system
has a service reminder indicator to inform
the driver of operating problems. If any of
the following conditions occurs, this
indicates a malfunction of the airbags or
pretensioners. Contact your Toyota dealer
as soon as possible to service the
vehicle.
The light does not come on when the
ignition key is turned to the “ON” posi-
tion, or the light remains on.
The light comes on or flashes while
driving.
If either front seat belt does not retract
or cannot be pulled out due to a mal-
function or activation of the relevant
front seat belt pretensioner.
In the following cases, contact your Toyota
dealer as soon as possible:
The front of the vehicle (shaded in the
illustration) was involved in an acci dent
that was not severe enough to cause
the front seat belt pretensioners to op-
erate.
Either front seat belt pretensioner as-
sembly or surrounding area is
scratched, cracked, or otherwise dam-
aged.

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2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
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
cause sudden SRS front airbag
inflation or disable the system,
which could result in death or seri-
ous injury.
Failure to follow these instructions
can result in death or serious injury.
Consult your Toyota dealer about any
repairs and modifications.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
This SRS front airbag system has a ser-
vice reminder indicator to inform the driver
of operating problems. If either of the fol-
lowing conditions occurs, this indicates a
malfunction of the airbags. Contact your
Toyota dealer as soon as possible to ser-
vice the vehicle.
The light does not come on when the
ignition key is turned to the “ON” posi-
tion, or the light remains on.
The light comes on while driving.

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2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
Do not hook a hanger, heavy or
sharp pointed objects on the coat
hook. If the curtain shield airbag
inflates, those items will be thrown
away with great force or the curtain
shield airbag may not activate cor-
rectly. When you hang clothes,
hang them on the coat hook direct-
ly.
Do not use seat accessories which
cover the parts where the side air-
bags inflate. Such accessories may
prevent the side airbags from acti-
vating correctly, causing death or
serious injury.
Do not modify or replace the seats
or upholstery of front seats with
side airbags. Such changes may
disable the system or cause the
side airbags to inflate accidentally,
resulting in death or serious injury.
Do not disassemble or repair the
front pillar and roof side rail con-
taining the curtain shield airbags.
Such changes may disable the sys-
tem or cause the curtain shield air-
bags to inflate accidentally, result-
ing in death or serious injury.
Failure to follow these instructions
can result in death or serious injury.
Consult your Toyota dealer about any
repairs and modifications.
NOTICE
Do not perform any of the following
changes without consulting your
Toyota dealer. Such changes can
interfere with proper operation of the
SRS side airbag and curtain shield
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 side structure of
the passenger compartment
 Repairs made on or near the con-
sole
This SRS side airbag and curtain shield
airbag system has a service reminder
indicator to inform the driver of operating
problems. If either of the following
conditions occurs, this indicates a
malfunction of the airbags. Contact your
Toyota dealer as soon as possible to
service the vehicle.
The light does not come on when the
ignition key is turned to the “ON” posi-
tion, or the light remains on.
The light comes on or flashes while
driving.

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2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
OPERATION OF INSTRUMENTS AND
CONTROLS
Ignition switch, Transmission and Parking brake
Ignition switch with steering lock 128
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic transmission 129
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
.
Fourwheel drive system 138
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
Traction control system 145
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. .
Active traction control system 148
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle stability control system 150
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Downhill assist control system 152
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hillstart assist control system 155
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear height control air suspension 158
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking brake 163
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
Cruise control 164
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
SECTION 1 6

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2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
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 standard.
Regardless of the number of occupants or the
luggage loading condition, the vehicle height
is always automatically adjusted to a fixed
height in this mode while the engine is
running.
This mode is suitable for ordinary driving. “HI” (high) mode—
The vehicle height is about 40 mm (1.6 in.)
higher at rear than the
“N” mode height.
This mode is suitable when driving on the
bumpy roads and through water.
However, when the vehicle speed exceeds
about 30 km/h (19 mph) or over in the
“HI” mode, the “N” mode is automatically
selected.
CAUTION
The “HI” mode should be used for
severe offroad driving condition
only. Because the vehicle’s center of
gravity is higher in this setting, the
vehicle may become unstable when
turning abruptly, resulting in accident.
“LO” (low) mode—
The vehicle height is about 20 mm (0.8 in.)
lower at rear than the “N” mode height.
This mode allows you easy access to the
vehicle (getting in and out) and easy load-
ing and unloading operation.
This mode is available when the vehicle
speed is under about 12 km/h (7 mph).
NOTICE
Use the “LO” mode when the vehicle
is stopped. Otherwise, when the ve-
hicle speed exceeds about 12 km/h (7
mph), “N” mode is selected automati-
cally. So be careful when you drive in
any place where the overhead height
is limited.
(b) Vehicle height mode changing con- dition
To change the vehicle height, it is necessary
to meet the following conditions.
The engine should be running.
The height control “OFF” indicator light
should go off.
Rear height control air
suspension

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2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
To change the “LO” mode to “HI”, push
the switch twice. It takes about 30 sec-
onds until the “LO” mode changes to the
“HI” mode.
Selecting the “N” mode—
To change the “HI” mode to “N”, push
the height select switch on the “ ” side
once.
To change the “LO” mode to “N”, push
the height select switch on the “ ” side
once.
Selecting the “LO” mode—
Push the height select switch on the “ ”
side while the vehicle is stopped.
To change the “N” mode to “LO”, push
the switch once.
To change the “HI” mode to “LO”, push
the switch twice.
Even if the engine is stopped while the ve-
hicle height is being lowered, the operation
continues for up to 25 seconds. If , within
this 25 seconds, any of the side doors or the
back door is opened, operation will continue
for a further 15 seconds.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.