Page 837 of 1014
813 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS450h_300h_OM_OM30D53E_(EE)
Remove the light bulb.
When installing, reverse the steps listed.5
6
Page 839 of 1014
815 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS450h_300h_OM_OM30D53E_(EE)
Remove the screws and take
off the mirror cover.
Turn the bulb base counter-
clockwise.
Remove the light bulb.
After installing the new
bulb, secure the socket to
the light body.
When inserting the socket, align
the marks printed on the light
body and the socket.
4
5
6
7
Page 842 of 1014

8186-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30D53E_(EE)
Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by
any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
Headlights
Front position lights/daytime running lights
LED front fog lights (if equipped)
Side turn signal lights
Stop/tail lights
Tail lights
Rear fog light
High mounted stoplight
License plate lights
Discharge headlights (if equipped)
If voltage to the discharge bulbs is insufficient, the bulbs may not come on,
or may go out temporarily. The discharge bulbs will come on when normal
power is restored.
LED Lights
The lights other than the discharge headlights (if equipped), halogen front
fog lights (if equipped), front turn signal lights, rear turn signal lights, back-
up light and outer foot lights each consist of a number of LEDs. If any of the
LEDs burn out, take your vehicle to any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional to have the light
replaced.
Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does not
indicate a malfunction. Contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional for more information in the
following situations:
Large drops of water have built up on the inside of the lens.
Water has built up inside the headlight.
When replacing light bulbs
Page 843 of 1014

819 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS450h_300h_OM_OM30D53E_(EE)P. 8 0 2
CAUTION
Replacing light bulbs
Turn off the lights. Do not attempt to replace the bulb immediately after
turning off the lights.
The bulbs become very hot and may cause burns.
Do not touch the glass portion of the light bulb with bare hands. When it is
unavoidable to hold the glass portion, use and hold with a clean dry cloth
to avoid getting moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
Fully install light bulbs and any parts used to secure them. Failure to do so
may result in heat damage, fire, or water entering the headlight unit. This
may damage the headlights or cause condensation to build up on the lens.
Vehicles with discharge headlights:
While the headlights are turned on, and
for a short time after they have been
turned off, metal components at the rear
of the headlight assembly will be
extremely hot. To prevent burns, do not
touch these metal components until you
are certain they have cooled down.
Metal components
Page 844 of 1014

8206-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
Discharge headlights (if equipped)
Contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional before replacing the discharge headlights
(including light bulbs).
Do not touch the discharge headlight’s high voltage socket when the head-
lights are turned on.
An extremely high voltage of 30000 V will be discharged and could result
in death or serious injury by electric shock.
Do not attempt to take apart or repair the headlight bulbs, connectors,
power supply circuits, or related components.
Doing so could result in electric shock and death or serious injury.
To prevent damage or fire
Make sure bulbs are fully seated and locked.
Check the wattage of the bulb before installing to prevent heat damage.
NOTICE
When replacing the outer foot lights
If the front window is stopping you from conducting the replace operation
properly, open the window on the side you are working on to allow you
enough space to work. Continuing the operation without giving yourself
enough space to work could lead you to scratch the vehicle.
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 996 of 1014

964Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Back-up light
Replacing light bulb .............812
Wattage .................................940
Battery (12-volt battery) ............749
If the 12-volt battery is
discharged ..........................913
Preparing and checking
before winter ......................434
Warning light........................831
Battery (traction battery) .............84
Blind Spot Monitor (BSM) ......418
Bluetooth
®
Audio system ........................567
Hands-free system
(for cellular phone).............611
Brake
Brake Hold ...........................272
Fluid......................................935
Parking brake ........................269
Regenerative braking ..............82
Warning light ................830, 833
Warning message..................839
Brake assist ...............................397
Brake Hold ................................272
Break-in tips .............................226
Brightness control
Instrument panel light control ....
111
BSM (Blind Spot Monitor) .......418
Blind Spot Monitor function 424
Rear Cross Traffic
Alert function .....................427Card key ................................... 138
Care .................................. 720, 724
Aluminum wheels ................ 721
Exterior ................................ 720
Interior ................................. 724
Seat belts .............................. 725
Cargo hooks.............................. 694
Caution label............................... 84
CD player ................................. 536
Chains ....................................... 436
Child restraint system ................. 59
Baby seats, definition ............ 59
Baby seats, installation .......... 72
Child seats, definition ............ 59
Child seats, installation .......... 72
Installing CRS with ISOFIX
rigid anchors ........................ 75
Installing CRS with seat belts 72
Installing CRS with top strap. 76
Junior seats, definition ........... 59
Junior seats, installation......... 74
BC
Page 1000 of 1014

968Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Emergency brake signal ............399
Emergency flashers ...................820
Emergency tire puncture
repair kit ..................................885
Energy monitor..........................131
Engine .......................................928
Accessory mode....................247
Compartment ........................738
Engine switch .......................246
Hood .....................................734
How to start the hybrid
system.................................246
Identification number ...........928
Ignition switch
(power switch)....................246
Overheating ..........................917
Power switch ........................246
Engine compartment cover........740
Engine coolant ...........................744
Capacity ................................933
Checking ...............................744
Preparing and checking
before winter ......................434
Engine coolant temperature
gauge .......................................109
Engine oil ..................................741
Capacity ................................930
Checking ...............................741
Oil level warning message....853
Oil pressure warning
message ..............................841
Preparing and checking
before winter ......................434Engine switch ........................... 246
EPS (Electric Power Steering) . 398
Function ............................... 398
Warning light ....................... 833
Warning message................. 845
EV drive mode.......................... 254
First-aid kit storage net ............. 694
Flat tire
Vehicles with a spare tire..... 871
Vehicles without a spare tire 885
Floor mats ................................... 34
Fluid
Brake.................................... 935
Hybrid transmission............. 934
Washer ................................. 748
Fog lights .................................. 283
Replacing light bulbs ... 805, 818
Switch .................................. 283
Wattage ................................ 940
Follow me home system ........... 273
Footwell light ........................... 684
Front air conditioning system ... 478
Front fog lights ......................... 283
Replacing light bulbs ... 805, 818
Switch .................................. 283
Wattage ................................ 940
Front personal lights ................. 685
Front position lights.................. 272
Light switch ......................... 272
Replacing light bulbs ........... 818
Welcome light illumination
control ............................... 143
F