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4-5. Using the driving support systems
◆DRS (Dynamic Rear Steering) (if equipped)
Contributes to the turning characteristics and responsiveness of the
vehicle by slightly adjusting the rear wheel angle of the vehicle in accor-
dance with steering wheel movement
◆EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to
turn the steering wheel
◆AVS (Adaptive Variable Suspension system)
By independently controlling the damping force of the shock absorbers
for each of the 4 wheels according to the road and driving conditions,
this system helps riding comfort with superior steering stability, and
helps good vehicle posture
When SPORT S+ mode is selected by the driving mode select switch,
the damping force is suitable for sporty driving ( →P. 2 8 0 )
◆LDH (Lexus Dynamic Handling system) (if equipped)
Provides independent control of the VGRS, DRS and EPS. Contributes
to turning characteristics at low speeds, responsiveness at medium
speeds and safety at high speeds by controlling the steering angle of
the front and rear wheels in accordance with the steering wheel opera-
tion and vehicle speed
◆VDIM (Vehicle Dynamics Integrated Management)
Provides integrated control of the ABS, brake assist, TRAC, VSC and
EPS, VGRS (if equipped) and DRS (if equipped) systems
Helps to maintain vehicle stability when swerving on slippery road sur-
faces by controlling the brakes, hybrid system output, steering assist,
and steering ratio
◆PCS (Pre-Collision System) (if equipped)
→ P. 2 9 0
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6-3. Do-it-yourself maintenance
Wheels
When replacing wheels, care should be taken to ensure that they are
equivalent to those removed in load capacity, diameter, rim width and
inset
*.
Replacement wheels are available at your Lexus dealer.
*: Conventionally referred to as “offset”.
Lexus does not recommend using the following:
●Wheels of different sizes or types
●Used wheels
●Bent wheels that have been straightened
●Steel wheels (F SPORT models only)
●Use only Lexus wheel nuts and wrenches designed for use with your
aluminum wheels.
●When rotating, repairing or changing your tires, check that the wheel
nuts are still tight after driving 1000 miles (1600 km).
●Be careful not to damage the aluminum wheels when using tire chains.
●Use only Lexus genuine balance weights or equivalent and a plastic or
rubber hammer when balancing your wheels.
If a wheel is bent, cracked or heavily corroded, it should be replaced.
Otherwise, the tire may separate from the wheel or cause a loss of han-
dling control.
Wheel selection
Aluminum wheel precautions
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GS450h_OM_OM30F70U_(U)
4576-3. Do-it-yourself maintenance
6
Maintenance and care
■When replacing wheels
The wheels of your vehicle are equipped with tire pressure warning valves and trans-
mitters that allow the tire pressure warning system to provide advance warning in the
event of a loss in tire inflation pressure. Whenever wheels are replaced, tire pressure
warning valves and transmitters must be installed. (→P. 4 4 5 )
CAUTION
■When replacing wheels
●Do not use wheels that are a different size from those recommended in the
Owner’s Manual, as this may result in a loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a tubeless tire.
Doing so may result in an accident, causing death or serious injury.
●F SPORT models: Do not install steel wheels.
The wheel contact surface could be damaged, and the wheel could come off
while driving, which could lead to an accident resulting in death or serious injury.
■Use of defective wheels prohibited
Do not use cracked or deformed wheels.
Doing so could cause the tire to leak air during driving, possibly causing an acci-
dent.
NOTICE
■Replacing tire pressure warning valves and transmitters
●Because tire repair or replacement may affect the tire pressure warning valves
and transmitters, make sure to have tires serviced by your Lexus dealer or other
qualified service shop. In addition, make sure to purchase your tire pressure
warning valves and transmitters at your Lexus dealer.
●Ensure that only genuine Lexus wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly with non-
genuine wheels.
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Page 648 of 654

647Alphabetical index
GS450h_OM_OM30F70U_(U)
S-FLOW mode ..................................... 349
Shift lever ................................................. 203Hybrid transmission......................... 203
If the shift lever cannot be shifted from P ........... 556
Shift lever light ....................................... 363
Shift lock system.................................... 556
Side airbags ............................................... 39
Side display ............................................. 332
Side marker lights................................... 217
Light switch ............................................. 217
Replacing light bulbs ....................... 489
Welcome light illumination control ....................................................123
Side mirrors ..............................................164 Adjusting and folding ........................ 164
BSM (Blind spot monitor) ............ 300
Linked mirror function
when reversing ................................. 165
Mirror position memory .................. 152
Side turn signal lights .......................... 209 Replacing light bulbs ....................... 489
Turn signal lever ................................ 209
Smart access system
with push-button start .......................123Antenna location ................................. 125
Entry functions .......................................123
Starting the hybrid system .............. 193
Warning message .............................. 519
Snow mode ............................................. 204
Snow tires ................................................ 322 Spare tire ................................................... 541
Inflation pressure................................583
Storage location ................................. 542
Spark plug ................................................579
Specifications..........................................574
Speedometer .............................................. 91
Sport mode ............................................. 280
Steering lock ............................................ 196
Column lock release ......................... 197
Steering lock system warning message........................... 539
Steering wheel ......................................... 161
Adjustment............................................... 161
Audio switches
*
Heated steering wheel .................. 380
Power easy access system ............. 152
Steering wheel position memory .............................. 152
Stop lights Replacing light bulbs .......................489
Storage feature ..................................... 366
Stuck If the vehicle becomes stuck.......... 571
Sun shade
Rear .......................................................... 387
Rear door ............................................. 388
Roof ............................................................ 172
Sun visors..................................................375
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.
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