engine TOYOTA 4RUNNER 2003 N210 / 4.G Owners Manual

’03 4Runner_U (L/O 0305)
352
2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
Model:
1GRFE and 2UZFE
Type: 1GRFE engine6 cylinder V type, 4 cycle, gasoline
2UZFE engine
8 cylinder V type, 4 cycle, gasoline
Bore and stroke, mm (in.): 1GRFE engine94.0 95.0 (3.70 3.74)
2UZFE engine
94.0 84.0 (3.70 3.31)
Displacement, cm
3 (cu. in.):
1GRFE engine 3956 (241.4)
2UZFE engine 4664 (284.6)
Dimensions and cargo load
Overall width mm (in.)
2790 (109.8)
Overall height
∗
1mm (in.)
1575 (62.0)
Wheelbase mm (in.)
Front tread mm (in.) 1575 (62.0)
Rear tread mm (in.)
66 (145)
∗1: Unladen vehicle∗2: With twowheel drive models∗3: With fourwheel drive models∗4: With roof rails∗5: With rear spoiler∗6: With rear height control air suspensionOverall length mm (in.)
Cargo load
kg (lb.)4800 (189.0)
1875 (73.8)
1820 (71.7)
∗
2or3,4
1765 (69.5)∗2, 5
1760 (69.3)∗3, 5
1755 (69.1)∗2
1750 (68.9)∗3
1810 (71.3)∗2 or 3,4,6
1750 (68.9)∗2 or 3,5,6
1740 (68.5)∗2or3,6
Engine

’03 4Runner_U (L/O 0305)
353
2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
Fuel type:
Unleaded gasoline, Octane Rating 87
(Research Octane Number 91) or higher.
For improved vehicle performance, the
use of premium unleaded gasoline with
an Octane Rating of 91 (Research Oc-
tane Number 96) or higher is recom-
mended.
Fuel tank capacity, L (gal., Imp. gal.): 87 (23.0, 19.1) ENGINE
Valve clearance (engine cold), mm (in.):
1GRFE engineIntake 0.15—0.25 (0.006—0.010)
Exhaust 0.29—0.39 (0.011—0.015)
2UZFE engine Intake 0.15—0.25 (0.006—0.010)
Exhaust 0.25—0.35 (0.010—0.014)
Spark plug type: 1GRFE engineDENSO K20HRU11
NGK LFR6C11
2UZFE engine DENSO SK20R11
NGK IFR6A11
Spark plug gap, mm (in.): 1.1 (0.043)
ENGINE LUBRICATION
Oil capacity (drain and ref ill), L (qt., Imp.
qt.):
1GRFE engineWith filter 5.2 (5.5, 4.6)
Without filter 4.9 (5.2, 4.3)
2UZFE engine With filter 6.2 (6.5, 5.5)
Without filter 5.7 (6.0, 5.0) “Toyota Genuine Motor Oil” is f
illed in
your Toyota vehicle. Use Toyota approved
“Toyota Genuine Motor Oil” or equivalent
to satisfy the following grade and
viscosity.
Oil grade:
API grade SL “EnergyConserving” or
ILSAC multigrade engine oil
Recommended oil viscosity: SAE 5W30
Outside temperature
Please contact your Toyota dealer for fur-
ther details.
Fuel Service specifications

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2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
COOLING SYSTEM
Total capacity, L (qt., Imp. qt.):
1GRFE engine 9.8 (10.4, 8.6)
2UZFE engine 12.3 (13,0, 10.8)
Coolant type:
“Toyota Genuine Long Life Coolant” is
filled in your Toyota vehicle. In order to
avoid technical problems, we strongly
recommend using “Toyota Genuine Long
Life Coolant” or equivalent.
With ethyleneglycol type coolant for a
proper corrosion protection of aluminum
components
Do not use alcohol type antifreeze or
plain water alone.
Please contact your Toyota dealer for
further details.
BATTERY
Open voltage
∗ at 20 C (68 F):
12.6—12.8 V Fully charged
12.2—12.4 V Half charged
11.8—12.0 V Discharged
∗: Voltage that is checked 20 minutes af-
ter the key is removed with all the
lights turned off
Charging rates: 5 A max. AUTOMATIC TRANSMISSION
Fluid capacity (drain and ref
ill),
L (qt., Imp. qt.):
1GRFE engineUp to 2.0 (2.1, 1.8)
2UZFE engine Up to 3.0 (3.2, 2.6)
Fluid type: Toyota Genuine ATF Type TIV
Change automatic transmission fluid only
as necessary.
Generally, it is necessary to change
automatic transmission fluid only if your
vehicle is driven under one of the Special
Operating Conditions listed in your
“Scheduled Maintenance Guide” or
“Owner ’s Manual Supplement”. When
changing the automatic transmission fluid,
use only “Toyota Genuine ATF Type TIV”
(ATF JWS3309 or NWS6500) to aid in
assuring optimum transmission perfor-
mance.
Notice: Using automatic transmission
fluid other than “Toyota Genuine ATF
Type TIV” may cause deterioration in
shift quality, locking up of your trans-
mission accompanied by vibration, and
ultimately damage the automatic trans-
mission of your vehicle. Please contact your Toyota dealer for fur-
ther details.
TRANSFER
Oil capacity, L (qt., Imp. qt.):
1.4 (1.5, 1.2)
Oil type: Hypoid gear oil API GL5
Recommended oil viscosity: SAE 75W90
DIFFERENTIAL (1GRFE engine)
Oil capacity, L (qt., Imp. qt.): Twowheel drive models 3.05 (3.2, 2.7)
Fourwheel drive models Front 1.5 (1.6, 1.3)
Rear 3.05 (3.2, 2.7)
Oil type: Hypoid gear oil API GL5
Recommended oil viscosity: Front SAE 75W90
Rear Above 18 C (0 F)
SAE 90
Below 18 C (0 F)
SAE 80W or 80W90

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2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
DIFFERENTIAL (2UZFE engine)
Oil capacity, L (qt., Imp. qt.):
Twowheel drive models 3.05 (3.2, 2.7)
Fourwheel drive models Front 1.4 (1.5, 1.2)
Rear 3.05 (3.2, 2.7)
Oil type: Hypoid gear oil API GL5
Recommended oil viscosity:
Above 18 C (0 F)
SAE 90
Below 18 C (0 F)
SAE 80W or 80W90
CHASSIS LUBRICATION
Propeller shafts: Spiders and slide yokesLithium base chassis grease, NLGI
No.2 BRAKES
Minimum pedal clearance when depressed
with the force of 490 N (50 kgf, 110 lbf)
with the engine running, mm (in.):
55 (2.2)
Pedal free play, mm (in.): 1—6 (0.04—0.24)
Pad wear limit, mm (in.): 1.0 (0.04)
Lining wear limit, mm (in.): 1.0 (0.04)
Parking brake adjustment when depressed
with the force of 294 N (30 kgf, 66.1 lbf): 5—7 clicks
Fluid type: SAE J1703 or FMVSS No.116 DOT 3
STEERING
Wheel free play: Less than 30 mm (1.2 in.)
Power steering fluid type: Automatic transmission fluid DEXRON II
or III

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2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
Engine compartment
Fuses (type A)
1. SPARE 10 A: Spare fuse
2. SPARE 15 A: Spare fuse
3. STOP 10 A: Stop/tail lights, high
mounted stoplight, shift lock control
system, antilock brake system, trac-
tion control system (twowheel drive
models), active traction control system
(fourwheel drive models), vehicle sta-
bility control system, rear height control
air suspension, multiport fuel injection
system/s equential multiport fuel injec-
tion system, trailer brake controller,
trailer lights (tail lights)
Tires
Tire size Tire pressure
kPa (kgf/cm2 or bar, psi)
Front Rear
P265/70R16 111S
P265/65R17 110S 220 (2.2, 32) 220 (2.2, 32)
220 (2.2, 32) 220 (2.2, 32) Wheel size
16 7J
∗
1
16 7JJ∗
2
17 71/2JJ
Tire size, pressure and wheel size:
∗
1: Vehicles with steel wheels∗2: Vehicles with aluminum wheels
NOTE: For a complete information on tires (e.g. replacing tires or replacing wheels), see “Checking tire pressure” through “Aluminum wheel precau-
tions”, pages 332 through 337 in Section 72.
Wheel nut torque, N·m (kgf·m, ft·lbf): 11 0 ( 11 . 5 , 8 3 )
Fuses

’03 4Runner_U (L/O 0305)
2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
Where to obtain the
Repair Manual
The repair manual for 4RUNNER, written in
English, may be purchased as applicable from
any Toyota dealer.
Pub. Name: 2003 4RUNNER Repair Manual
Pub. No.: RM1001U1 RM1001U2
RM1034U
Maintenance procedures for the engine,
chassis, body, electrical system, and more,
are clearly explained and illustrated.
Periodic maintenance and tuneup
Periodic maintenance and tuneup helps to pre-
vent small problems from growing into larger ones lat-
er on. The repair manual outlines exactly what main-
tenance is required and clearly explains how to do the
work yourself stepbystep.
Areas covered include such things as spark plug re-
placement, valve clearance adjustment and engine oil
and filter replacement.