key Lexus GS300h 2016 Repair Manual

5547-2. Steps to take in an emergency
GS450h_300h_OM_OM30F00E_(EE)
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the hybrid system is off.
●Turn off any unnecessary electrical components when the vehicle is running at a low
speed for an extended period, such as in heavy traffic.
■Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when the vehicle
is not in use, due to natural discharge and the draining effects of certain electrical appli-
ances. If the vehicle is left for a long time, the 12-volt battery may discharge, and the
hybrid system may be unable to start. (The 12-volt battery recharges automatically while
the hybrid system is operating.)
■When recharging or replacing the 12-volt battery
●In some cases, it may not be possible to un lock the doors using the smart entry & start
system when the 12-volt battery is discharged. Use the wireless remote control or the
mechanical key to lock or unlock the doors.
●The hybrid system may not start on the first attempt after the 12-volt battery has
recharged but will start normally after the second attempt. This is not a malfunction.
●The power switch mode is memorized by the vehicle. When the 12-volt battery is
reconnected, the system will return to the mo de it was in before the 12-volt battery was
discharged. Before disconnecting the 12-volt battery, turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt battery dis-
charged, be especially careful when reconnecting the 12-volt battery.
WA R N I N G
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable gas
that may be emitted from the 12-volt battery:
●Make sure each jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any other than the intended terminal.
●Do not allow the other end of the jumper cable connected to the “+” terminal to come
into contact with any other parts or metal surfaces in the area, such as brackets or
unpainted metal.
●Do not allow the + and - clamps of the jumper cables to come into contact with each
other.
●Do not smoke, use matches, cigarette lighters or allow open flame near the 12-volt
battery.

5868-2. Customization
GS450h_300h_OM_OM30F00E_(EE)
■Door lock ( →P. 1 3 9 , 5 4 8 )
■Entry function* and wireless remote control ( →P. 1 3 4 , 1 5 3 )
*: If equipped
FunctionDefault
settingCustomized setting
Unlocking on second key turn
(Allows all doors to be
unlocked by turning the
mechanical key twice in the
driver’s door)Off
(All doors
unlocked in one step)On
(Driver’s door
unlocked in one
step, all doors
unlocked in two steps)
——O
Speed linked door locking
functionOnOffO—O
Shift position linked door lock-
ing functionOffOnO—O
Shift position linked door
unlocking functionOffOnO—O
Driver’s door linked door
unlocking functionOnOffO—O
Locking/unlocking of the trunk
when all doors are locked/
unlockedOnOff——O
123
FunctionDefaultsettingCustomized setting
Operation signal
(Emergency flashers)OnOffO—O
Time elapsed before automatic
door lock function is activated if
a door is not opened after
being unlocked
30 seconds
60 seconds
——O
120 seconds
Open door reminder buzzer
(When locking the vehicle)OnOff——O
123

5888-2. Customization
GS450h_300h_OM_OM30F00E_(EE)
■Outside rear view mirrors ( →P. 1 9 0 )
■Power windows and moon roof* (→ P. 193, 196)
*: If equipped
■Automatic light control system ( →P. 2 3 6 )
FunctionDefault
settingCustomized setting
Automatic mirror folding and
extending operationLinked to the locking/
unlocking of the doorsOff
——OLinked to opera-
tion of the power switch
Linked mirror function when
reversingOnOff——O
123
FunctionDefaultsettingCustomized setting
Mechanical key linked opera-
tionOffOn——O
Wireless remote control linked
operationOffOn——O
Buzzer sounds if operated
using wireless remote controlOnOff——O
123
FunctionDefaultsettingCustomized setting
Light sensor sensitivityStandard-2 to 2O—O
Follow me home
(Time elapsed before head-
lights automatically turn off)30 seconds
60 seconds
——O90 seconds
120 seconds
Welcome light illumination con-
trolOnOff——O
123

593
8
8-2. Customization
Vehicle specifications
GS450h_300h_OM_OM30F00E_(EE)
■Illumination (
→P. 3 8 6 )
FunctionDefault
settingCustomized setting
Interior lights illumination con-
trolOnOff——O
Time elapsed before the inte-
rior lights turn off15 seconds7. 5 s e c o n d sO—O30 seconds
Operation after the power
switch is turned offOnOff——O
Operation when the doors are
unlockedOnOff——O
Operation when you approach
the vehicle with the electronic
key on your person (vehicles
with entry function)
OnOff——O
Footwell lightingOnOff——O
Outer foot lightsOnOff——O
Time elapsed before the outer
foot lights turn off15 seconds
Off
O—O7. 5 s e c o n d s
30 seconds
Enable/disable operation of the
outer foot lights when you
approach the vehicle with the
electronic key on your person
OnOff——O
Enable/disable operation of the
outer foot lights when the doors
are unlocked with the power
door lock switch
OnOff——O
123

598What to do if... (Troubleshooting)
GS450h_300h_OM_OM30F00E_(EE)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, new genuine mechanical keys can be made
by any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional. ( →P. 136)
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional immediately. ( →P. 1 3 7 )
●Is the electronic key battery weak or depleted? ( →P. 4 5 1 )
●Vehicles with entry function
Is the power switch in ON mode?
When locking the doors, turn the power switch off. ( →P. 2 1 8 )
●Vehicles with entry function
Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person.
●The function may not operate properly due to the condition of the radio wave.
(→ P. 1 5 5 )
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
( → P. 1 4 3 )
If you have a problem, check the foll owing before contacting any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

599What to do if... (Troubleshooting)
GS450h_300h_OM_OM30F00E_(EE)
●The function to prevent the electronic key from being left inside the trunk will
operate and you can open the trunk as usual. Take the key out from the trunk.
(→ P. 1 4 8 )
●Did you press the power switch while firmly depressing the brake pedal?
(→ P. 2 1 7 )
●Is the shift lever in P? ( →P. 2 1 9 )
●Is the electronic key anywhere detectable inside the vehicle? ( →P. 1 5 3 )
●Is the steering wheel unlocked? ( →P. 2 1 9 )
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way. ( →P. 5 4 9 )
●Is the 12-volt battery discharged? ( →P. 5 5 1 )
●Is the power switch in ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
power switch in ON mode ( →P. 545)
●It is locked automatically to prevent theft of the vehicle. ( →P. 2 1 9 )
The trunk lid is closed with the electronic key left inside
If you think som
ething is wrong
The hybrid system does not start
The shift lever cannot be shifted from P even if you depress the brake
pedal
The steering wheel cannot be turned after the hybrid system is stopped

600What to do if... (Troubleshooting)
GS450h_300h_OM_OM30F00E_(EE)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( →P. 1 9 3 )
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or ON mode (the hybrid system is not operating) for a period of time.
(→ P. 2 1 9 )
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? ( →P. 4 7 8 )
●The parking brake indicator is on
Is the parking brake released? ( →P. 2 3 1 )
Depending on the situation, other types of warning buzzer may also sound.
( → P. 4 76 , 4 8 2 )
●Did anyone inside the vehicle open a door or anything move inside the vehicle
during setting the alarm?
The sensor detects them and the alarm sounds. ( →P. 9 0 )
To stop the alarm, turn the power switch to ON mode or start the hybrid system.
●Is the electronic key left inside the vehicle or the moon roof opened (if
equipped)?
Check the message on the multi-information display. ( →P. 4 8 2 )
The windows do not open or close by operating the power window
switches
The power switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and th
e horn sounds (if equipped)
A warning buzzer sounds when leaving the vehicle
(vehicles with entry function)

603Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
Approach warningDynamic radar cruise control .......321
Dynamic radar cruise control with full-speed range................... 309
Armrest.................................................... 400
Ashtrays ................................................... 398
Assist grips ..............................................403
Audio input
*
Audio system*
Automatic headlight leveling system ................................................... 239
Automatic High Beam ....................... 245
Automatic light control system ...... 236
AUX port
*
Auxiliary boxes ......................................393
AVS (Adaptive Variable
Suspension system) ..........................345
Back-up light Replacing light bulb ..........................459
Wattage..................................................578
Battery (12-volt battery).....................428 If the 12-volt battery is
discharged.......................................... 551
Preparing and checking
before winter ....................................354
Warning light ....................................... 476
Battery (traction battery)...................... 79 Blind Spot Monitor (BSM) .............. 333
Blind Spot Monitor function ........ 339
Rear Crossing Traffic Alert function...................................... 341
Bluetooth
®*
Brake Brake Hold ............................................234
Fluid .......................................................... 574
Parking brake ........................................ 231
Regenerative braking..........................76
Warning light........................... 476, 478
Warning message ............................ 482
Brake assist ............................................ 344
Brake Hold .............................................. 234
Break-in tips .............................................201
Brightness control Instrument panel li ght control ....... 107
BSM (Blind Spot Monitor) ............... 333
Blind Spot Monitor function ........ 339
Rear Crossing Traffic Alert function...................................... 341
Card key ....................................................134
Care .................................................406, 410 Aluminum wheels.............................. 407
Exterior ................................................... 406
Interior.......................................................410
Seat belts ................................................... 411
B
C
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

604Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
Cargo hooks........................................... 394
CD player
*
Chains .......................................................355
Child restraint system ............................ 56Baby seats, definition .......................... 57
Baby seats, installation ....................... 66
Child seats, definition.......................... 57
Child seats, installation....................... 66
Installing CRS with ISOFIX rigid anchors........................................ 69
Installing CRS with seat belts.......... 66
Installing CRS with top strap .......... 70
Junior seats, definition ........................ 57
Junior seats, installation .....................68
Child safety................................................. 55 12-volt battery
precautions........................... 430, 555
Airbag precautions .............................. 45
Child restraint system......................... 56
How your child should
wear the seat belt ..................... 39, 40
Installing child restraints .................... 65
Moon roof precautions ................... 198
Power window lock switch.............193
Power window precautions .......... 195
Rear door child-protectors ............143
Removed electronic key battery precautions ....................... 452
Seat belt comfort guide ..................... 39
Seat belt precautions .......................... 42
Seat heater precautions .................. 381
Trunk precautions ..............................149
Child-protectors ................................... 143 Cleaning.........................................406, 410
Aluminum wheels.............................. 407
Exterior ................................................... 406
Interior.......................................................410
Seat belts ................................................... 411
Clock ...............................................105, 398
Coat hooks.............................................. 402
Condenser ..............................................427
Console box ........................................... 390
Console box light ...................................391
Coolant..................................................... 425 Capacity..................................................572
Checking ............................................... 425
Preparing and checking
before winter.................................... 354
Cooling system ..................................... 425
Engine overheating .......................... 556
Hybrid system overheating.......... 556
Consumption screen ........................... 126
Cruise control Cruise control ......................................327
Dynamic radar cruise control ....... 315
Dynamic radar cruise control with full-speed range ................... 303
Cup holders ..............................................391
Curtain shield airbags .......................... 43
Customizable features........................ 581

606Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
Dynamic radar cruise control with full-speed range .......................303
Function ..................................................303
Warning message.............................482
Dynamic Rear Steering (DRS)........345 Function ..................................................345
Warning message.............................482
DVD player
*
Eco drive mode .....................................330
Electric motor (traction motor) ......... 75
Electric Power Steering (EPS)........345 Function ..................................................345
Warning light ....................................... 477
Warning message.............................482
Electronic key.......................................... 134 Battery-saving function.................... 155
If the electronic key does not operate properly ........................... 548
Replacing the battery.........................451
Emergency, in case of
If a warning buzzer sounds .......... 476
If a warning light turns on............... 476
If a warning message is displayed ............................................ 482
If the 12-volt battery is discharged.......................................... 551
If the electronic key does not operate properly ........................... 548
If the hybrid system will not start ........................................................543
If the parking brake cannot be released........................................546 If the shift lever cannot be
shifted from P................................... 545
If you have a flat tire................517, 528
If you think something is wrong .............................................. 475
If your vehicle becomes stuck .... 563
If your vehicle has to be stopped in an emergency ......... 469
If your vehicle needs to be towed ............................................ 470
If your vehicle overheats................ 556
Emergency brake signal.................... 345
Emergency flashers............................. 468
Emergency tire puncture
repair kit ................................................ 528
Energy monitor ....................................... 126
Engine ....................................................... 568 Accessory mode ................................. 218
Compartment ....................................... 419
Engine switch ........................................ 217
Hood ......................................................... 417
How to start the hybrid
system.................................................... 217
Identification number.......................568
Ignition switch (power switch) .................................. 217
Overheating ........................................ 556
Power switch ......................................... 217
Engine compartment cover ...............421
Engine coolant....................................... 425 Capacity..................................................572
Checking ............................................... 425
Preparing and checking before winter.................................... 354
E