220 Lexus GS300h 2015 Owner's Manual

701-1. For safe use
GS450h_300h_OM_OM30F00E_(EE)
Remove the head restraint.
Secure the child restraint system
using the seat belt or ISOFIX rigid
anchors.
Open the anchor bracket cover,
latch the hook onto the anchor
bracket and tighten the top strap.
Make sure the top strap is securely
latched.
■When installing a child restraint system
You need a locking clip to install the child restraint system. Follow the instructions pro-
vided by the manufacturer of the system. If yo ur child restraint system does not provide a
locking clip, you can purchase the following item from any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional:
Locking clip for child restraint system
(Part No. 73119-22010)
Child restraint systems with a top strap
1
2
3

2114-1. Before driving
4
Driving
GS450h_300h_OM_OM30F00E_(EE)
■Total trailer weight and permissible drawbar loadTotal trailer weight
Weight of the trailer itself plus the
trailer load should be within the max-
imum towing capacity. Exceeding
this weight is dangerous. ( →P. 566)
When towing a trailer, use a friction
coupler or friction stabilizer (sway
control device).
Permissible drawbar load
Allocate the trailer load so that the drawbar load is greater than 25 kg (55.1 lb.) or
4% of the towing capacity. Do not let the drawbar load exceed the indicated
weight. ( →P. 5 6 6 )
■Information tag (manufacturer’s label)
Gross vehicle mass
The combined weight of the driver,
passengers, towing hitch, luggage,
total curb mass and drawbar load
should not exceed the gross vehicle
mass by more than 100 kg (220.5
lb.). Exceeding this weight is danger-
ous.
Maximum permissible rear axle capacity
The weight borne by the rear axle should not exceed the maximum permissible
axle capacity by 15% or more. Exceeding this weight is dangerous.
The values for towing capacity were derived from testing conducted at sea level.
Take note that engine output and towing capacity will be reduced at high altitudes.
Important points rega rding trailer loads
1
2
1
WA R N I N G
■When the gross vehicle mass limit or maximum permissible axle capacity is exceeded
Do not exceed the established speed limit for towing a trailer in built-up areas or 100
km/h (62 mph), whichever is lower.
Failing to observe this precaution may lead to an accident causing death or serious
injury.
2

2204-2. Driving procedures
GS450h_300h_OM_OM30F00E_(EE)
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be suspended if the
hybrid system is turned on and off repeatedly in a short period of time. In this case, refrain
from operating the hybrid system. After about 10 seconds, the steering lock motor will
resume functioning.
■When “Check Entry & Start System” will be displayed on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional immediately.
■If the “READY” indicator does not come on
In the event that the “READY” indicator does not come on even after performing the
proper procedures for starting the vehicle, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional immediately.
■If the hybrid system is malfunctioning
→ P. 4 8 2
■If the electronic key battery is depleted
→P. 4 5 1
■Operation of the power switch
●When operating the power switch, one short, firm press is enough. If the switch is
pressed improperly, the hybrid system may no t start or the power switch mode may not
change. It is not necessary to press and hold the switch.
●If attempting to restart the hybrid system immediately after turning the power switch off,
the hybrid system may not start in some cases. After turning the power switch off,
please wait a few seconds before restarting the hybrid system.
■If the smart entry & start system has been deactivated in a customized setting
→P. 5 4 8
“Steering Lock active” w
ill be displayed on the
multi-information display.
Check that the shift lever is set in P. Press the
power switch while turning the steering wheel
left and right.

5768-1. Specifications
GS450h_300h_OM_OM30F00E_(EE)
XTy p e B
XTy p e C
Ti r e s i z e235/45R18 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 220 km/h
(137 mph)300 (3.0, 44)300 (3.0, 44)
220 km/h (137 mph)
or less240 (2.4, 35)240 (2.4 , 35)
Wheel size18 × 8J
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)
Ti r e s i z e235/40R19 96Y XL
Tire inflation
pressure
(Recommended
cold tire inflation
pressure)Vehicle speedFront tire
kPa (kgf/cm2 or
bar, psi)Rear tire
kPa (kgf/cm2 or
bar, psi)
More than 220 km/h
(137 mph)300 (3.0, 44)300 (3.0, 44)
220 km/h (137 mph)
or less240 (2.4, 35)250 (2.5, 36)
Wheel size19 × 8J
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)

577
8
8-1. Specifications
Vehicle specifications
GS450h_300h_OM_OM30F00E_(EE)
XTy p e D
XCompact spare tire (if equipped)
■When towing a trailer
Add 20.0 kPa (0.2 kgf/cm2 or bar, 3 psi) to the recommended tire inflation pressure and
drive at speeds below 100 km/h (62 mph).
Ti r e s i z e235/40R19 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 220 km/h
(137 mph)300 (3.0, 44)300 (3.0, 44)
220 km/h (137 mph)
or less240 (2.4, 35)250 (2.5, 36)
Wheel size19 × 8J (235/40R19), 19 × 9J (265/35R19)
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)
Ti r e s i z eT155/70D17 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)

615Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
Shift lever.................................................. 224Hybrid transmission ......................... 224
If the shift lever cannot be shifted from P ...................................545
Shift lever light........................................386
Shift lock system ....................................545
Side airbags................................................ 43
Side display.............................................. 364
Side mirrors.............................................. 190 Adjusting and folding........................ 190
BSM (Blind spot monitor)............. 333
Linked mirror function when
reversing ................................................ 191
Mirror position memory...................178
Side turn signal lights...........................230 Replacing light bulbs........................465
Turn signal lever .................................230
Smart entry & start system................. 153
Antenna location................................. 153
Entry functions............................ 139, 146
Starting the hybrid system............... 217
Warning message.............................482
Snow mode ............................................. 225
Snow tires................................................. 357
Spare tire ................................................... 517 Inflation pressure................................ 577
Storage location .................................. 518
Spark plug................................................ 572 Specifications ......................................... 566
Speech command system
*
Speedometer .......................................... 104
Sport mode ............................................. 330
Steering lock ............................................219
Column lock release ....................... 220
Steering lock system warning message ...............................................515
Steering wheel........................................ 186 Adjustment .............................................186
Audio switches
*
Heated steering wheel ................... 382
Power easy access system............. 178
Steering wheel position
memory ................................................ 178
Stop lights
Emergency brake signal................ 345
Replacing light bulbs ....................... 465
Storage feature ..................................... 389
Storage precautions............................ 389
Stuck If the vehicle becomes stuck ....... 563
Sun visors ................................................. 397
Sun shade Rear ..........................................................400
Rear door ................................................401
Roof ............................................................ 197
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.