Page 230 of 1014

2274-1. Before driving
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
Drum-in-disc type parking brake system
Your vehicle has a drum-in-disc type parking brake system. This type of
brake system needs bedding-down of the brake shoes periodically or when-
ever the parking brake shoes and/or drum are replaced. Have any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional
perform the bedding down operation.
Operating your vehicle in a foreign country
Comply with the relevant vehicle registration laws and confirm the availabil-
ity of the correct fuel. (P. 929)
For efficient use
Shift the shift lever to D when driving.
In the N position, the gasoline engine operates but electricity cannot be gen-
erated. The hybrid battery (traction battery) will discharge, requiring unnec-
essary engine power to recharge.
Drive your vehicle smoothly.
Avoid abrupt acceleration and deceleration. Gradual acceleration and decel-
eration will make more effective use of the electric motor (traction motor)
without having to use gasoline engine power.
Avoid repeated acceleration.
Repeated acceleration consumes hybrid battery (traction battery) power,
resulting in poor acceleration. Battery power can be restored by driving
with the accelerator pedal slightly released.
Shift the shift lever to P when parking.
In the N position, the hybrid battery (traction battery) does not recharge.
Leaving the shift lever in the N position for an extended period of time may
discharge the hybrid battery (traction battery). The vehicle cannot run if the
hybrid battery (traction battery) is discharged.
Page 304 of 1014
293
4 4-4. Refueling
Driving
GS450h_300h_OM_OM30D53E_(EE)
Opening the fuel tank cap
Close all the doors and windows, and turn the power switch off.
Confirm the type of fuel.
Fuel types
GS300h
EU area:
Unleaded gasoline conforming to European standard EN228, Research
Octane Number of 91 or higher
Except EU area:
Unleaded gasoline, Research Octane Number of 91 or higher
GS450h
EU area:
Unleaded gasoline conforming to European standard EN228, Research
Octane Number of 95 or higher
Except EU area:
Unleaded gasoline, Research Octane Number of 95 or higher
Use of ethanol blended gasoline in a gasoline engine
Lexus allows the use of ethanol blended gasoline where the ethanol content
is up to 10%. Make sure that the ethanol blended gasoline to be used has a
Research Octane Number that follows the above.
Perform the following steps to open the fuel tank cap:
Before refueling the vehicle
Page 750 of 1014

7266-1. Maintenance and care
GS450h_300h_OM_OM30D53E_(EE)
NOTICE
Cleaning detergents
Do not use the following types of detergent, as they may discolor the vehi-
cle interior or cause streaks or damage to painted surfaces:
• Non-seat portions: Organic substances such as benzene or gasoline,
alkaline or acidic solutions, dye, and bleach
• Seats: Alkaline or acidic solutions, such as thinner, benzene, and alco-
hol
Do not use polish wax or polish cleaner. The instrument panel’s or other
interior part’s painted surface may be damaged.
Preventing damage to leather surfaces
Observe the following precautions to avoid damage to and deterioration of
leather surfaces:
Remove any dust or dirt from leather surfaces immediately.
Do not expose the vehicle to direct sunlight for extended periods of time.
Park the vehicle in the shade, especially during summer.
Do not place items made of vinyl, plastic, or containing wax on the uphol-
stery, as they may stick to the leather surface if the vehicle interior heats
up significantly.
Water on the floor
Do not wash the vehicle floor with water.
Vehicle systems such as the audio system may be damaged if water comes
into contact with electrical components such as the audio system above or
under the floor of the vehicle. Water may also cause the body to rust.
Page 959 of 1014
9288-1. Specifications
GS450h_300h_OM_OM30D53E_(EE)
Engine number
The engine number is stamped on the engine block as shown.
GS300h
GS450h
GS300hGS450h
Engine
Model2AR-FSE
Ty p e4-cylinder in line, 4-cycle, gasoline
Bore and stroke90.0 98.0 mm (3.54 3.86 in.)
Displacement2494 cm3 (152.2 cu.in.)
Valve clearanceAutomatic adjustmentDrive belt tension
Model2GR-FXE
Ty p e6-cylinder V type, 4-cycle, gasoline
Bore and stroke94.0 83.0 mm (3.70 3.27 in.)
Displacement3456 cm3 (210.9 cu.in.)
Valve clearanceAutomatic adjustmentDrive belt tension
Page 960 of 1014
929
8 8-1. Specifications
Vehicle specifications
GS450h_300h_OM_OM30D53E_(EE)
Fuel
Fuel type
EU area:
Unleaded gasoline conforming to
European standard EN228 only
Except EU area:
Unleaded gasoline only
Research Octane
NumberGS300h91 or higher
GS450h95 or higher
Fuel tank capacity (Reference)66 L (17.4 gal., 14.5 Imp.gal.)
Electric motor (traction motor)
Ty p ePermanent magnet synchronous
motor
Maximum outputGS300h105 kW
GS450h147 kW
Maximum torqueGS300h300 N•m (30.6 kgf•m, 221.3 ft•lbf)
GS450h275 N•m (28.0 kgf•m, 202.8 ft•lbf)
Page 964 of 1014
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.
Page 1014 of 1014
980
GS450h_300h_OM_OM30D53E_(EE)
GAS STATION INFORMATION
Auxiliary catch leverTrunk openerFuel filler door
P. 734P. 187P. 293
Hood lock release
leverTire inflation pressure
P. 7 3 4
P. 9 3 6
Fuel tank capacity
(Reference)66 L (17.4 gal., 14.5 Imp.gal.)
Fuel typeEU area:Unleaded gasoline conforming to Euro-
pean standard EN228 only
Except EU area: Unleaded gasoline only
P. 293, 929
Cold tire inflation
pressureP. 9 3 6
Engine oil capacity
(Drain and refill —
reference)P. 9 3 0
Engine oil type“Toyota Genuine Motor Oil” or equivalent
Oil grade:
0W-20, 5W-20, 5W-30 and 10W-30:
API grade SL “Energy-Conserving”, SM
“Energy-Conserving” or SN “Resource-Conserv-
ing”; or ILSAC multigrade engine oil
15W-40 and 20W-50:
API grade SL, SM or SN multigrade engine oil
P930