Lexus GS300h 2013 Owner's Manual

9308-1. Specifications
GS450h_300h_OM_OM30D53E_(EE)
*: The engine oil capacity is a reference quantity to be used when changing
the engine oil. Warm up the engine and turn off the hybrid system, wait
more than 5 minutes, and check the oil level on the dipstick.
Hybrid battery (traction battery)
Ty p eNickel-Metal hydride battery
Vo l t a g e7.2 V/module
Capacity6.5 Ah (3HR)
QuantityGS300h32 modules
GS450h40 modules
Overall voltageGS300h230.4 V
GS450h288 V
Lubrication system
Oil capacity
(Drain and refill 
reference
*)
With filter
Without filter
GS300hGS450h
4.5 L (4.8 qt., 4.0 lmp.
qt.)
4.1 L (4.3 qt., 3.6 lmp.
qt.)6.2 L (6.6 qt., 5.5
Imp.qt.)
5.9 L (6.2 qt., 5.2
Imp.qt.)

931
8 8-1. Specifications
Vehicle specifications
GS450h_300h_OM_OM30D53E_(EE)
Engine oil selection
“Toyota Genuine Motor Oil” is used in your Lexus vehicle.
Lexus recommends the use of approved “Toyota Genuine Motor
Oil”. Another motor oil of matching quality can also be used.
Oil grade:
0W-20, 5W-20, 5W-30 and 10W-30:
API grade SL “Energy-Conserving”, SM “Energy-Conserving”
or SN “Resource-Conserving”; or ILSAC multigrade engine oil
15W-40 and 20W-50:
API grade SL, SM or SN multigrade engine oil
Recommended viscosity (SAE):
SAE 0W-20 is filled into your
Lexus vehicle at manufactur-
ing, and the best choice for
good fuel economy, and good
starting in cold weather.
If SAE 0W-20 oil is not avail-
able, SAE 5W-30 oil may be
used. However, it should be
replaced with SAE 0W-20 at
the next oil change.
If you use SAE 10W-30 or a
higher viscosity engine oil in
extremely low temperatures,
the engine may become diffi-
cult to start, so SAE 0W-20,
5W-20 or 5W-30 engine oil is
recommended.
Temperature range anticipated
before next oil changePreferred

9328-1. Specifications
GS450h_300h_OM_OM30D53E_(EE)
Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which
allows cold startability. Oils with a lower value before the W
allow for easier starting of the engine in cold weather.
• The 20 in 0W-20 indicates the viscosity characteristic of the
oil when the oil is at high temperature. An oil with a higher
viscosity (one with a higher value) may be better suited if the
vehicle is operated at high speeds, or under extreme load con-
ditions.
How to read oil container labels:
Either or both API registered marks are added to some oil con-
tainers to help you select the oil you should use.
API Service Symbol
Top portion: “API SERVICE
SN” means the oil quality desig-
nation by American Petroleum
Institute (API).
Center portion: “SAE 0W-20”
means the SAE viscosity grade.
Lower portion: “Resource-Con-
serving” means that the oil has
fuel-saving and environmental
protection capabilities.
ILSAC Certification Mark
The International Lubricant
Specification Advisory Com-
mittee (ILSAC) Certification
Mark is displayed on the front
of the container.
1
2

933
8 8-1. Specifications
Vehicle specifications
GS450h_300h_OM_OM30D53E_(EE)
Cooling system
Gasoline
engine
Power control unit
Left-hand
drive
vehiclesRight-hand
drive
vehicles
Capacity
GS300h8.4 L (8.9 qt.,
7.4 Imp.qt.)2.1 L (2.2 qt.,
1.8 Imp.qt.)2.3 L (2.4 qt.,
2.0 Imp.qt.)
GS450h9.4 L (9.9 qt.,
8.3 Imp.qt.)3.1 L (3.3 qt.,
2.7 Imp.qt.)2.9 L (3.1 qt.,
2.6 Imp.qt.)
Coolant typeUse either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.
Ignition system
Spark plug
Make
GapDENSO FK20HBR8
0.8 mm (0.031 in.)
NOTICE
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

9348-1. Specifications
GS450h_300h_OM_OM30D53E_(EE)
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Electrical system
12-volt battery
Open voltage at 20C (68F):12.5 V or higher: Fully charged
11.0 — 12.4 V: Half charged
10.9 V or lower: Discharged
(Voltage is checked 20 minutes after
the hybrid system and all lights are
turned off.)
Charging rates4 — 5 A
Hybrid transmission
Fluid capacity*GS300h3.80 L (4.02 qt., 3.34 Imp.qt.)
GS450h5.69 L (6.01 qt., 5.01 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
Hybrid transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of your transmission accompanied
by vibration, and ultimately damage the transmission of your vehicle.

935
8 8-1. Specifications
Vehicle specifications
GS450h_300h_OM_OM30D53E_(EE)Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at
the factory.
Use Lexus approved “Toyota Genuine Differential Gear Oil” or an equiva-
lent of matching quality to satisfy the above specification. Please contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional for further details.
*: Minimum pedal clearance when depressed with a force of 500 N
(51.0 kgf, 112.4 lbf) while the hybrid system is operating.
When performing the brake pedal inspection, also be sure to check that the
brake system warning light is not illuminated when the hybrid system is
operating (If the brake system warning light is illuminated, refer to P.
830).
Differential
Oil capacity1.35 L (1.43 qt., 1.19 Imp.qt.)
Oil type and viscosityToyota Genuine Differential gear oil LT
75W-85 GL-5 or equivalent
Brakes
Pedal clearance*115 mm (4.5 in.) Min.
Pedal free play1.0 — 2.0 mm (0.04 — 0.08 in.)
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3,
SAE J1704 or FMVSS No. 116 DOT 4
Steering
Free playLess than 30 mm (1.2 in.)

9368-1. Specifications
GS450h_300h_OM_OM30D53E_(EE)
Type A
*1: 5 passengers and full loaded
*2: “For optimizing fuel economy, ECO tire pressure is recommended. Tire
pressure affects traveling comfort, road noise and steering characteristics.”
Tires and wheels
Tire size225/50R17 94W
Tire inflation
pressure
(Recommended
cold tire inflation
pressure)
Vehicle speed
Front tire
kPa (kgf/cm2
or bar, psi)
Rear tire
kPa (kgf/cm2
or bar, psi)
More than 210 km/
h
(132 mph)270 (2.7,
39)
*1
260 (2.6, 38)
300 (3.0,
44)
*1
280 (2.8, 41)
From 160 km/h
(100
mph) to 210 km/h
(132 mph)
240 (2.4, 35)
260 (2.6,
38)
*1
240 (2.4, 35)
Normal pressure:
160 km/h
(100 mph)
or less
240 (2.4, 35)
ECO pressure*2:
160 km/h
(100 mph)
or less
270 (2.7, 39)270 (2.7, 39)
Wheel size17  7 1/2J
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)

937
8 8-1. Specifications
Vehicle specifications
GS450h_300h_OM_OM30D53E_(EE)
Type B
*: 5 passengers and full loaded
Type C
Tire size235/45R18 94Y
Tire inflation
pressure
(Recommended
cold tire inflation
pressure)
Vehicle speed
Front tire
kPa (kgf/cm2
or bar, psi)
Rear tire
kPa (kgf/cm2
or bar, psi)
More than 210 km/
h
(132 mph)
240 (2.4, 35)
270 (2.7, 39)*
240 (2.4, 35)
From 160 km/h
(100
mph) to 210 km/h
(132 mph)
240 (2.4, 35)
160 km/h (100
mph)
or less
Wheel size18  8J
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)
Tire size235/40R19 96Y XL
Tire inflation
pressure
(Recommended
cold tire inflation
pressure)
Vehicle speed
Front tire
kPa (kgf/cm2
or
bar, psi)
Rear tire
kPa (kgf/cm2
or
bar, psi)
More than 210 km/
h
(132 mph)250 (2.5, 36)*
240 (2.4, 35)290 (2.9, 42)*
260 (2.6, 38)
From 160 km/h
(100
mph) to 210 km/h
(132 mph)
240 (2.4, 35)260 (2.6, 38)*
250 (2.5, 36)
160 km/h (100
mph)
or less

9388-1. Specifications
GS450h_300h_OM_OM30D53E_(EE)
*: 5 passengers and full loaded
Wheel size19  8J
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)

939
8 8-1. Specifications
Vehicle specifications
GS450h_300h_OM_OM30D53E_(EE)
Type D
*: 5 passengers and full loaded
Compact spare tire (if equipped)
When towing a trailer
Add 20.0 kPa (0.2 kgf/cm
2 or bar, 3 psi) to the recommended tire inflation
pressure and drive at speeds below 100 km/h (62 mph).
Tire size235/40R19 96Y XL (front) and 265/35R19 94Y (rear)
Tire inflation
pressure
(Recommended
cold tire inflation
pressure)
Vehicle speed
Front tire
kPa (kgf/cm2
or
bar, psi)
Rear tire
kPa (kgf/cm2
or
bar, psi)
More than 210 km/
h
(132 mph)250 (2.5, 36)*
240 (2.4, 35)270 (2.7, 39)*
250 (2.5, 36)
From 160 km/h
(100
mph) to 210 km/h
(132 mph)
240 (2.4, 35)250 (2.5, 36)
160 km/h (100
mph)
or less
Wheel size19  8J (235/40R19), 19  9J (265/35R19)
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)
Tire sizeT155/70D17 110M, T145/70D18 107M
Tire inflation pressure
(Recommended cold
tire
inflation pressure)
420 kPa (4.2 kgf/cm2 or bar, 60 psi)
Wheel size17  4T (T155/70D17), 18  4T (T145/70D18)
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)