
3
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8 
7
6
5
4
3
2
GS450h_300h_OM_OM30F92E_(EE)
3-5. Opening, closing the  
windows and moon roof 
Power windows............................ 193
Moon roof ...................................... 196 
4-1. Before driving 
Driving the vehicle .................... 200 
Cargo and luggage .................. 208
Trailer towing (vehicles  
without towing package) .....209 
Trailer towing (vehicles with  
towing package)....................... 210 
4-2. Driving procedures 
Power (ignition) switch ..............217
EV drive mode ............................ 222 
Hybrid transmission .................. 224 
Turn signal lever .......................... 231
Parking brake ..............................232
Brake Hold....................................235 
4-3. Operating the lights  
and wipers 
Headlight switch ......................... 237
AHS (Adaptive High-beam  
System)......................................... 241 
Automatic High Beam ............. 246 
Fog light switch .......................... 250 
Windshield wipers  
and washer.................................. 251 
4-4. Refueling 
Opening the fuel tank cap...... 257 
4-5. Using the driving support  
systems 
Lexus Safety System+ ............... 261
PCS (Pre-Crash Safety  
system)......................................... 270 
LKA (Lane-Keeping  
Assist)...........................................282 
RSA (Road Sign Assist)............ 291
Dynamic radar cruise  
control with full-speed 
range ............................................ 296 
Cruise control ............................ 308 
Driving mode select switch.......311 
BSM (Blind Spot Monitor) ...... 314 
•The Blind Spot Monitor 
function...................................... 319
• The Rear Crossing Traffic 
Alert function .......................... 321 
Driving assist systems...............324 
4-6. Driving tips 
Hybrid vehicle driving tips....... 331
Winter driving tips .....................334
4Driving 

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7
6
5
4
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GS450h_300h_OM_OM30F92E_(EE)
6-3. Do-it-yourself maintenance 
Do-it-yourself service  
precautions ................................399 
Hood ................................................ 401 
Positioning a floor jack.............402 
Engine compartment............... 403
12-volt battery............................... 412
Tires .................................................. 416
Tire inflation pressure...............429
Wheels............................................. 431 
Air conditioning filter................433 
Electronic key battery ..............435
Checking and replacing  
fuses .............................................. 437 
Light bulbs ..................................... 442 
7-1. Essential information 
Emergency flashers...................452 
If your vehicle has to be  
stopped in an 
emergency.................................453 
7-2. Steps to take in an  
emergency 
If your vehicle needs  
to be towed ................................454 
If you think something  
is wrong .......................................459 
If a warning light turns on  
or a warning buzzer 
sounds..........................................460 
If a warning message  
is displayed................................. 466 
If you have a flat tire  
(vehicles with spare tire) ..... 498 
If you have a flat tire  
(vehicles without spare 
tire) ............................................... 509 
If the hybrid system  
will not start................................523 
If the parking brake  
cannot be released.................525 
If the electronic key does  
not operate properly ............. 527 
If the 12-volt battery is  
discharged ................................ 530 
If your vehicle overheats .........535
If the vehicle becomes  
stuck.............................................. 542
7When trouble arises 

16Pictorial index 
GS450h_300h_OM_OM30F92E_(EE)
■Instrument panel (Left-hand drive vehicles)
Power switch  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P.  217
Starting the hybrid system/changing the modes  . . . . . . . . . . . . . . . . . . . . . . . .  P. 217 
Emergency stop of the hybrid system . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . .  P. 453 When the hybrid system will not start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 523Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 477, 493
Shift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . P. 224
Changing the shift position  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 224 
Precautions against towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 454 When the shift lever does not move. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 229
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . .  P. 104
Reading the meters/adjusting the instrument panel light . . . . . . . . . . . . . . . . P. 104 Warning lights/indicator lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 98When the warning lights come on  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 460
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24Pictorial index 
GS450h_300h_OM_OM30F92E_(EE)
■Instrument panel (Right-hand drive vehicles)
Power switch  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P.  217
Starting the hybrid system/changing the modes  . . . . . . . . . . . . . . . . . . . . . . . .  P. 217 
Emergency stop of the hybrid system . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . .  P. 453 When the hybrid system will not start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 523Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 477, 493
Shift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . P. 224
Changing the shift position  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 224 
Precautions against towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 454 When the shift lever does not move. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 229
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . .  P. 104
Reading the meters/adjusting the instrument panel light . . . . . . . . . . . . . . . . P. 104 Warning lights/indicator lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 98When the warning lights come on  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 460
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451-1. For safe use
1
For safety and security
GS450h_300h_OM_OM30F92E_(EE)
WARNING
■SRS airbag precautions 
Observe the following precautions regarding the SRS airbags.  Failure to do so may cause death or serious injury.
●The driver and all passengers in the vehicl e must wear their seat belts properly. The SRS airbags are supplemental devices to be used with the seat belts.
●The SRS driver airbag deploys with considerable force, and can cause death or seri- 
ous injury especially if the driv er is very close to the airbag.  
Since the risk zone for the driver’s airbag is  the first 50 - 75 mm (2 - 3 in.) of inflation, placing yourself 250 mm (10 in.) from your  driver airbag provides you with a clear 
margin of safety. This distance is measured from the center of the steering wheel to your breastbone. If you sit less than 250 mm (10 in.) away now, you can change yourdriving position in several ways: 
• Move your seat to the rear as far as  you can while still reaching the pedals com- fortably.• Slightly recline the back of the seat.  
Although vehicle designs vary, many drivers can achieve the 250 mm (10 in.) dis- tance, even with the driver seat all the way forward, simply by reclining the back ofthe seat somewhat. If reclining the back of  your seat makes it hard to see the road, 
raise yourself by using a firm, non-slippery  cushion, or raise the seat if your vehicle has that feature.• If your steering wheel is adjustable, tilt  it downward. This points the airbag toward 
your chest instead of your head and neck. The seat should be adjusted as recommend ed above, while still maintaining control of the foot pedals, steering wheel, and your view of the instrument panel controls. 

471-1. For safe use
1
For safety and security
GS450h_300h_OM_OM30F92E_(EE)
WARNING
■SRS airbag precautions
●Do not hang coat hangers or other hard objects on the coat hooks. All of these items 
could become projectiles and may cause deat h or serious injury, should the SRS cur- tain shield airbags deploy.
●If a vinyl cover is put on the area where the SRS knee airbag will deploy, be sure to 
remove it.
●Do not use seat accessories which cover the parts where the SRS side airbags inflate as they may interfere with inflation of th e airbags. Such accessories may prevent the 
side airbags from activating correctly, disable the system or cause the side airbags to inflate accidentally, resulting  in death or serious injury.
●Do not allow anyone to kneel on the passen- 
ger seat toward the door or put their head or hands outside the vehicle.
●Do not attach anything to or lean anythingagainst areas such as the dashboard, steeringwheel pad, lower portion of the instrument 
panel and door of the glove box.  These items can become projectiles when theSRS driver, front passenger and knee airbags 
deploy.
●Do not attach anything to areas such as a door, windshield glass, side door glass, front or rearpillar, roof side rail and assist grip. (Except for 
the speed limit sticker  P. 516) 

831-2. Hybrid system
1 
GS450h_300h_OM_OM30F92E_(EE)
For safety and security
WARNING
■Road accident cautions 
Observe the following precautions to reduce  the risk of death or serious injury:
●Pull your vehicle off the road, apply the parking brake, shift the shift lever to P, and 
turn the hybrid system off.
●Do not touch the high voltage parts, cables and connectors.
●If electric wires are exposed inside or outside your vehicle, an electric shock may
occur. Never touch exposed electric wires.
●If a fluid leak occurs, do not touch the fluid as it may be strong alkaline electrolyte from the hybrid battery (traction battery). If it comes into contact with your skin or 
eyes, wash it off immediately with a large amount of water or, if possible, boric acid solution. Seek immediate medical attention.
●If a fire occurs in the hybrid vehicle, leave the vehicle as soon as possible. Never use a 
fire extinguisher that is not meant for electric fires. Using even a small amount of water may be dangerous.
●If your vehicle needs to be towed, do so  with rear wheels raised. If the wheels con- 
nected to the electric motor (traction motor) are on the ground when towing, the motor may continue to generate electricity. This may cause a fire. ( P. 454)
●Carefully inspect the ground under the vehicle. If you find that liquid has leaked onto 
the ground, the fuel system may have been damaged. Leave the vehicle as soon as possible. 

941-3. Theft deterrent system
GS450h_300h_OM_OM30F92E_(EE)
●The intrusion sensor detects intruders or movement in the vehicle.
●The tilt sensor detects changes in vehicle inclination, such as when the vehicle 
is towed away. 
This system is designed to deter and pr event vehicle theft but does not guarantee 
absolute security against all intrusions.
■Setting the intrusion sensor and tilt sensor 
The intrusion sensor and tilt sensor will be set automatically when the alarm is 
set. ( P. 91)
■Canceling the intrusion sensor and tilt sensor 
If you are leaving pets or other moving things inside the vehicle, make sure to 
stop the intrusion sensor and tilt sensor before setting the alarm, as they will 
respond to movement inside the vehicle. 
Turn the power switch off. 
Press the intrusion sensor and tilt 
sensor cancel switch.
A message will be shown on the multi-information display in the 
instrument cluster. 
Press the switch again to re-enable the intrusion sensor and tilt sensor.
Intrusion sensor (if equipped)  and tilt sensor (if equipped)
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