Page 157 of 600

1573-2. Opening, closing and locking the doors and trunk
3
Operation of each component
GS450h_300h_OM_OM30F92E_(EE)
■Note for the push-start function
●Even when the electronic key is within the effective range (detection areas), the system may not operate properly when the electronic key is on the instrument panel, rear 
package tray or floor, or in the door pock ets or glove box when the hybrid system is started or power switch modes are changed.
●Even if the electronic key is not inside the ve hicle, it may be possible to start the hybrid 
system if the electronic key is near the window.
■When the vehicle is not driven for extended periods
●Vehicles with entry function: To prevent theft of the vehicle, do not leave the electronic
key within 2 m (6 ft.) of the vehicle.
●The smart entry & start system can be deactivated in advance. ( P. 561)
■To operate the system properly
●Make sure to carry the electronic key when operating the system. Do not get the elec- tronic key too close to the vehicle when operating the system from the outside of thevehicle. 
Depending on the position and holding condit ion of the electronic key, the key may not be detected correctly and the system may not operate properly. (The alarm may go offaccidentally, or the door lock prev ention function may not operate.)
●Do not leave the electronic key inside the trunk.  The key confinement prevention function may not operate, depending on the locationof the key (close to a spare tire [if equipped], the inside edge of the trunk), conditions 
(inside a metal bag, close to metallic obje cts) and the radio waves in the surrounding area. ( P. 148)
■If the smart entry & start system does not operate properly
●Locking and unlocking the doors and opening the trunk: Use the mechanical key. ( P. 527)
●Starting the hybrid system: P. 528
■Customization 
Settings (e. g. smart entry & start system) can be changed.  
(Customizable features:  P. 561)
■If the smart entry & start system has been deactivated in a customized setting
●Locking and unlocking the doors and opening the trunk:  
Use the wireless remote control or mechanical key. ( P. 139, 147, 527)
●Starting the hybrid system and changing power switch modes:P. 528
●Stopping the hybrid system: P. 218 
     
        
        Page 416 of 600
4166-3. Do-it-yourself maintenance 
GS450h_300h_OM_OM30F92E_(EE)
Tires
Check if the treadwear indicators are show ing on the tires. Also check the tires 
for uneven wear, such as excessive wear on one side of the tread.  
Check the spare tire condition and pressure if not rotated. 
New tread 
Worn tread 
Treadwear indicator
The location of treadwear indicators is shown by the “TWI” or “ ” mark, etc., molded into the sidewall of each tire.Replace the tires if the treadwear indicators are showing on a tire.
Replace or rotate tires in accordance with maintenance schedules and tread- 
wear.
Checking tires
1
2
3 
     
        
        Page 499 of 600
4997-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
Location of the spare tire, jack and tools
Jack handle 
Parking brake release tool 
Screwdriver 
Towing eyelet 
Wheel nut wrench 
Spare tire 
Jack
1
2
3
4
5
6
7 
     
        
        Page 507 of 600

5077-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
WARNING
■When using the compact spare tire
●Remember that the compact spare tire provided is specifically designed for use with your vehicle. Do not use your compact spare tire on another vehicle.
●Do not use more than one compact spare tire simultaneously.
●Replace the compact spare tire with a standard tire as soon as possible.
●Avoid sudden acceleration, abrupt steerin g, sudden braking and shifting operations 
that cause sudden engine braking.
■When the compact spare tire is attached 
The vehicle speed may not be correctly detected, and the following systems may not 
operate correctly:
■Speed limit when using the compact spare tire 
Do not drive at speeds in excess of 80 km /h (50 mph) when a compact spare tire is installed on the vehicle. 
The compact spare tire is not designed for  driving at high speeds. Failure to observe this precaution may lead to an accid ent causing death or serious injury.
■After using the tools and jack 
Before driving, make sure all the tools and  jack are securely in place in their storage location to reduce the possibility of personal  injury during a collision or sudden brak- ing.
• ABS & Brake assist 
•VSC •TRC• Cruise control (if equipped) 
• Dynamic radar cruise control with full- speed range (if equipped)• (Pre-Crash Safety system)  
(if equipped) •EPS• AFS (if equipped) 
• LDH (if equipped) • DRS (if equipped) 
• Adaptive Variable Suspension system 
(if equipped) • LKA (Lane-Keeping Assist) (if equipped) 
• Tire pressure warning system  (if equipped)•VDIM 
• VGRS (if equipped) • Lexus parking assist monitor (if equipped) 
• Lexus parking assist-sensor  (if equipped)• Navigation system (if equipped) 
     
        
        Page 595 of 600

595Alphabetical index
GS450h_300h_OM_OM30F92E_(EE)
Shift lever.................................................. 224 
Hybrid transmission ......................... 224 
If the shift lever cannot be  
shifted from P ................................... 229 
Shift lever light........................................ 366 
Shift lock system .................................... 228 
Side airbags................................................ 43 
Side display.............................................. 344 
Side mirrors.............................................. 190 
Adjusting and folding........................ 190 
BSM (Blind spot monitor)...............314 
Linked mirror function when  
reversing ................................................ 191 
Mirror position memory...................178 
Side turn signal lights............................ 231 
Replacing light bulbs........................ 449 
Turn signal lever ................................... 231 
Smart entry & start system................. 153 
Antenna location................................. 153 
Entry functions............................ 139, 146 
Starting the hybrid system............... 217 
Warning message.............................466 
Snow mode ............................................. 225 
Snow tires................................................ 338 
Spare tire ..................................................498 
Inflation pressure................................ 557 
Storage location .................................499 
Spark plug................................................ 552 
Specifications ......................................... 546 
Speech command system*
Speedometer .......................................... 104
Sport mode ................................................ 311 
Steering lock ............................................219 
Column lock release ....................... 220 
Steering lock system warning  
message ............................................. 496 
Steering wheel........................................ 186 
Adjustment .............................................186 
Audio switches*
Heated steering wheel ................... 362
Power easy access system............. 178 
Steering wheel position  
memory ................................................ 178 
Stop lights 
Emergency brake signal................ 325 
Replacing light bulbs ....................... 449 
Storage feature ..................................... 369 
Storage precautions............................ 369 
Stuck 
If the vehicle becomes stuck ....... 542 
Sun visors ..................................................377 
Sun shade 
Rear ..........................................................380 
Rear door ................................................381 
Roof ............................................................ 197
*: Refer to the “NAVIGATION AND MULTIMEDIA 
SYSTEM OWNER’S MANUAL”.