Page 474 of 652
474
GS450h_OM_OM30F70U_(U)
6-3. Do-it-yourself maintenance
■Trunk
FuseAmpereCircuit
1PSB30Pre-collision seat belts
2PTL25Power trunk opener and closer
3RR J/B-B10Smart access system with push-button start
4RR S/HTR20Seat heaters (rear)
5FR S/HTR10Seat heaters/ventilators (front)
6RR FOG10No circuit
7DC/DC-S (HV)7. 5DC/DC converter
8BATT FAN (HV)20Hybrid battery (traction battery) cooling fan
system
9SECURITY7. 5SECURITY
10ECU-B NO.37. 5Parking brake
11TRK OPN7. 5Power trunk opener and closer, trunk open
motor
12DCM (HV)7. 5DCM
13AC INV (HV )20Po w e r o u t l e t ( 1 2 0 V AC )
14RR-IG15Radar sensor, Blind Spot Monitor
15RR ECU-IG10
Power trunk opener and closer, parking
brake, tension reducer (rear left-hand), RR
CTRL SW, tire pressure warning system
16EPS-IG5Electric power steering system
17BACK UP7. 5Back-up lights, Remote Touch screen
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479
GS450h_OM_OM30F70U_(U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Light bulbs
Check the wattage of the light bulb to be replaced. ( P. 583)
P. 4 3 0
■Front
Vehicles with discharge headlights
You may replace the following bulbs by yourself. The difficulty level of
replacement varies depending on the bulb. If necessary bulb replace-
ment seems difficult to perform, contact your Lexus dealer.
For more information about replacin g other light bulbs, contact your
Lexus dealer.
Preparing for light bulb replacement
Removing the engine compartment covers
Bulb locations
Front turn signal light
Halogen fog light (if equipped)1
2
Page 480 of 652
480
GS450h_OM_OM30F70U_(U)
6-3. Do-it-yourself maintenance
Vehicles with LED headlights
■Rear
Halogen fog light (if equipped)
Front turn signal light1
2
Back-up light
Rear turn signal light1
2
Page 481 of 652
GS450h_OM_OM30F70U_(U)
4816-3. Do-it-yourself maintenance
6
Maintenance and care
■Halogen fog lights (if equipped)To allow enough working
space, turn the steering wheel
to the opposite side of the bulb
to be replaced.
Remove the 2 fender liner
clips.
Turn the steering wheel to the left
when replacing the right side light
bulb, and turn the steering wheel to
the right when replacing the left
side light bulb.
To take out the clips, turn the head
of the clip to unlock, then remove
by pulling.
While holding the clamp open,
pull and remove the tabs and
open the fender liner.
Unplug the connector while
pressing the lock release.
Replacing light bulbs
1
2
3
Page 482 of 652
482
GS450h_OM_OM30F70U_(U)
6-3. Do-it-yourself maintenance
Turn the bulb base counter-
clockwise.
Set the new light bulb.
Align the 3 tabs on the light bulb
with the mounting, and insert. Turn
it clockwise to set.
Set the connector.
After installing the connector,
shake the bulb base gently to check
that it is not loose, turn the fog lights
on once and visually confirm that
no light is leaking through the
mounting.
Reinstall the fender liner and
install the clips.
Insert the clips and turn to lock.
4
5
6
7
Page 489 of 652

GS450h_OM_OM30F70U_(U)
4896-3. Do-it-yourself maintenance
6
Maintenance and care
■Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by your
Lexus dealer.
●Headlights
●Parking lights/daytime running lights
●Front side marker lights
●LED fog lights (if equipped)
●Side turn signal lights
●Stop/tail lights
●Tail lights
●Rear side marker lights
●High mounted stoplight
●License plate lights
●Outer foot 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 headlig hts (if equipped), halogen fog lights (if
equipped), front turn signal lights, rear turn signal lights, back-up lights and outer
foot lights each consist of a number of LE Ds. If any of the LEDs burn out, take your
vehicle to your Lexus dealer to have the light replaced.
■Condensation build-up on the inside of the lens
Temporary condensation build-up on the insi de of the headlight lens does not indi-
cate a malfunction. Contact your Lexus dealer 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
P. 4 76
Page 583 of 652
GS450h_OM_OM30F70U_(U)
5838-1. Specifications
8
Vehicle specifications
Compact spare tire
Ti r e s i z eT155/70D17 110M, T145/70D18 107M
Tire inflation pressure
(Recommended cold tire
inflation pressure)
60 psi (420 kPa, 4.2 kgf/cm2 or bar)
Wheel size17 4T (T155/70D17), 18 4T (T145/70D18)
Wheel nut torque76 f t•lbf (103 N•m, 10.5 kgf•m)
Light bulbs
Light bulbsBulb No.WTy p e
Exterior
Discharge headlights*35A
Fog lights*19B
Front turn signal lights7444NA28 /8C
Rear turn signal lightsW21W21D
Back-up lightsW16W16D
Outer foot lightsW5W5D
Interior
Door courtesy lights5D
Vanity lights8D
Tr u n k l i g h t3.8D
A: D4S discharge bulbs
B: H16 halogen bulbs
C: Wedge base bulbs (amber) D: Wedge base bulbs (clear)
*: If equipped
Page 637 of 652

637Alphabetical index
GS450h_OM_OM30F70U_(U)
Daytime running light system .......... 220
DefoggerFront windshield .................................345
Outside rear view mirrors ............ 360
Rear window ....................................... 360
Differential ................................................ 581
Dimensions ............................................. 574
Dinghy towing..........................................192
Display 12.3-inch display.................................. 331
Dynamic radar cruise control......239
Lexus night view .................................... 311
LKA (Lane-Keeping Assist) ......... 274
Multi-information display ..................96
Trip information ..................................... 97
Warning message .............................. 513
Do-it-yourself maintenance ............. 423
Door courtesy lights Location ..................................................363
Wattage ................................................. 583
Door lock Doors ........................................................ 139
Smart access system with push-button start ..............................123
Wireless remote control ................. 136
Doors...........................................................139 Automatic door locking and unlocking system...................... 141
Door glasses ..........................................167
Door lock ................................................ 139
Open door warning buzzer........... 127
Open door warning light.............. 506
Outside rear view mirrors .............. 164
Rear door child-protector.............. 140 Driver’s seat position memory.......... 152
Driving position memory.................153
Memory recall function ................... 155
Power easy access system ............. 152
Driving ........................................................ 176 Break-in tips ........................................... 177
Correct driving posture .................... 30
Driving mode select switch ..........280
Hybrid vehicle driving tips ..............316
Procedures ............................................. 176
Winter drive tips ................................. 318
DRS (Dynamic Rear Steering) ....... 284 Function .................................................. 284
Warning message...............................519
DVD player
*
Dynamic radar cruise control ......... 239 Function .................................................. 239
Warning message.................. 515, 525
Dynamic radar cruise control with full-speed range Function .................................................. 254
Warning message.................. 515, 526
Dynamic Rear Steering (DRS) ....... 284 Function .................................................. 284
Warning message...............................519
Eco drive mode..................................... 280
EDR (Event data recorder).....................11
Electric motor (traction motor).......... 72
Electric Power Steering (EPS) ....... 284 Function .................................................. 284
Warning light .......................................504
Warning message.............................. 518
D
E
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.