Page 932 of 1014

905
7 7-2. Steps to take in an emergency
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
One of the following may be the cause of the problem:
One or both of the 12-volt battery terminals may be discon-
nected.
The 12-volt battery may be discharged. (P. 913)
Contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional if the problem cannot be repaired, or if repair
procedures are unknown.
When the hybrid system does not start, the following steps can be
used as an interim measure to start the hybrid system if the power
switch is functioning normally:
Set the parking brake.
Shift the shift lever to P.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for about 15 seconds while
depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Have the vehicle inspected by any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
The interior lights and headlights do not turn on, or the horn
does not sound.
Emergency start function
1
2
3
4
Page 941 of 1014

9147-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
Open and close any of the doors of your vehicle with the power
switch off.
Maintain the engine speed of the second vehicle and start the
hybrid system of your vehicle by turning the power switch to ON
mode.
Make sure the “READY” indicator comes on. If the indicator
does not come on, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Once the hybrid system has started, remove the jumper cables in
the exact reverse order from which they were connected.
Once the hybrid system starts, have the vehicle inspected at any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional as soon as possible.
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 appliances. 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.)
4
5
6
7
Page 971 of 1014
9408-1. Specifications
GS450h_300h_OM_OM30D53E_(EE)
Light bulbs
Light bulbsWTy p e
Exterior
Discharge headlights*35A
Front fog lights*19B
Front turn signal lights21C
Rear turn signal lights21D
Back-up light16D
Outer foot lights5D
Interior
Door courtesy lights5D
Vanity lights8D
Trunk light3.8D
A: D4S discharge bulbs
B: H16 halogen bulbs
C: Wedge base bulbs (amber)
D: Wedge base bulbs (clear)
*: If equipped
Page 981 of 1014
949
8 8-2. Customization
Vehicle specifications
GS450h_300h_OM_OM30D53E_(EE)
Automatic
light con-
trol system
(P. 272)
Light sensor sensitivityStandard-2 to 2O—O
Follow me home
(Time elapsed before
headlights automati-
cally turn off)
30
seconds
60
seconds
——O90
seconds
120
seconds
Welcome light illumina-
tion controlOnOff——O
Lexus
parking
assist-
sensor
*1
(P. 348)
Detection distance of the
front center sensorFarNearO—O
Detection distance of the
rear center sensorFarNearO—O
Buzzer volume31 to 5O—O
Display setting
(when Lexus parking
assist-sensor is operat-
ing)All sen-
sors dis-
playedDisplay
offO—O
ItemFunctionDefault
settingCustom-
ized set-
ting
123
Page 1001 of 1014

969Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Front seats .................................194
Adjustment ...........................194
Cleaning................................724
Correct driving posture ...........36
Driving position memory .....199
Head restraints ......................206
Power easy access system ....199
Seat heaters ...........................704
Seat position memory ...........199
Seat ventilators .....................704
Front turn signal lights ..............267
Replacing light bulbs ............807
Turn signal lever ...................267
Wattage .................................940
Fuel ............................................293
Capacity ................................929
Fuel gauge ............................109
Information ...........................941
Refueling ..............................293
Type ..............................293, 929
Warning light........................834
Warning messages ................857
Fuel consumption
Average fuel consumption....116
Average fuel consumption
after refueling .....................115
Current fuel consumption .....115
Fuel filler door...........................293
Refueling ..............................293
When the fuel filler door
cannot be opened................296
Fuses ..........................................782Gauges ...................................... 109
Glove box ................................. 689
Glove box light ......................... 689
Grille Shutter system
Warning message................. 847
Hands-free system
(for cellular phone) ................ 611
Head restraints .......................... 206
Headlight cleaner...................... 293
Headlights................................. 272
Adaptive Front-lighting
System (AFS) .................... 274
Automatic High Beam
system................................ 277
Discharge headlights
precautions ........................ 820
Follow me home system ...... 273
Headlight leveling warning
message ............................. 843
Light switch ......................... 272
Replacing light bulbs ........... 818
Wattage ................................ 940
Head-up display........................ 122
Heaters ...................................... 478
Air conditioning system....... 478
Heated steering wheel.......... 702
Outside rear view mirrors .... 501
Seat heaters .......................... 704
High-voltage components........... 84G
H