Page 469 of 654

468
GS450h_OM_OM30F70U_(U)
6-3. Do-it-yourself maintenance
34DOME7. 5
Personal lights, ornament lights, trunk light,
footwell lights, door courtesy lights, vanity
lights, rear door inside handle illuminations,
power trunk opener and closer
35MPX-B10
Body ECU, smart access system with push-
button start, electric tilt and telescopic steer-
ing column, power seats, head-up display,
front door ECU, gauges and meters, steer-
ing sensor, yaw rate and G sensor, overhead
module, RR CTRL SW, power trunk opener
and closer, clock, CAN gateway ECU
36IGCT NO.410Power control unit
37IGCT NO.37. 5Hybrid battery (traction battery), DC/DC
converter
38IGCT NO.25Hybrid system
39IG2 NO.15DCM, CAN gateway ECU
40GAUGE5Gauges and meters
41DC/DC150RH-J/B DC/DC, P/I DC/DC,
LH-J/B DC/DC, LUG-J/B DC/DC
42P/ I D C / D C100RR S/SHADE, DEFOG, FOG, TAIL,
PA N E L
43RH J/B DC/DC80Right-hand junction block
44LH J/B DC/DC50Left-hand junction block
45H-LP CLN30No circuit
46FA N N O. 240Electric cooling fans
47LUG J/B DC/DC80Luggage compartment junction block
48FA N N O.180Electric cooling fans
49PTC NO.150PTC heater
50PTC NO.250PTC heater
51HTR50Air conditioning system
FuseAmpereCircuit
GS450h_OM_OM30F70U_(U).book Page 468 Monday, January 19, 2015 9:34 AM
Page 471 of 654

470
GS450h_OM_OM30F70U_(U)
6-3. Do-it-yourself maintenance
■Driver’s side instrument panel
FuseAmpereCircuit
1STOP7. 5Stop lights, high mounted stoplight
2P/ W- B5Power window master switch
3P/ S E AT 1 F/ L30Po w e r s e a t s
4D/L NO.125Po w e r d o o r l o c k s y s t e m
5NV-IR10Lexus night view
6FL S/HTR10Seat heaters/ventilators
7WIPER30Windshield wipers
8WIPER-IG5Windshield wipers
9LH-IG10
Seat belts, body ECU, AFS, overhead mod-
ule, raindrop sensor, inside rear view mirror,
lane camera sensor (LKA), head-up display,
shift lock system, intuitive parking assist, front
left-hand door ECU, driver monitor system,
Remote Touch screen, electric tilt and tele-
scopic steering column, power seats, moon
roof, windshield wiper de-icer, intuitive park-
ing assist switch, PTC heater, Blind Spot
Monitor buzzer
10LH ECU-IG10
VDIM, brake system, D-SW MODULE
(Blind Spot Monitor, heated steering wheel),
driver support system, AFS, electric cooling
fans, EPB, air conditioning system, steering
sensor
GS450h_OM_OM30F70U_(U).book Page 470 Monday, January 19, 2015 9:34 AM
Page 472 of 654
GS450h_OM_OM30F70U_(U)
4716-3. Do-it-yourself maintenance
6
Maintenance and care
11DOOR FL30Outside rear view mirror defoggers, power
window (front left-hand)
12CAPACITOR
(HV)10Capacitor
13STRG LOCK15Steering lock system
14D/L NO.225Po w e r d o o r l o c k s y s t e m
15DOOR RL30Power window (rear left-hand)
16HAZ15Turn signal lights, emergency flashers
17LH-IG210
Multiport fuel injection system/sequential
multiport fuel injection system, stop lights,
smart access system with push-button start,
steering lock system, brake system, power
management system
18LH J/B-B7. 5Body ECU
19S/ROOF20Moon roof
20P/ S E AT 2 F/ L25Po w e r s e a t s
21TI & TE20Electric tilt and telescopic steering column
22A/C7. 5Air conditioning system
FuseAmpereCircuit
GS450h_OM_OM30F70U_(U).book Page 471 Monday, January 19, 2015 9:34 AM
Page 474 of 654
GS450h_OM_OM30F70U_(U)
4736-3. Do-it-yourself maintenance
6
Maintenance and care
14MULTIMEDIA10Navigation system, Remote Touch
15RAD NO.130Audio system
16AIR BAG10SRS airbag system, occupant classification
system
17OBD7. 5On-board diagnosis system
18ACC7. 5
Body ECU, DCM, head-up display, RR
CTRL, Remote Touch screen, navigation sys-
tem, clock, transmission
FuseAmpereCircuit
GS450h_OM_OM30F70U_(U).book Page 473 Monday, January 19, 2015 9:34 AM
Page 476 of 654
GS450h_OM_OM30F70U_(U)
4756-3. Do-it-yourself maintenance
6
Maintenance and care
■The upper part of the 12-volt battery*
*
: When one or more of the fuses in this unit are blown, the unit needs to be replaced as a whole.
FuseAmpereCircuit
1EPB30Pa r k i n g b r a ke
2LUG-J/B BATT40Luggage compartment junction block
3EPS80Electric power steering
4ARS80Dynamic rear steering
5MAIN220Engine compartment junction block
GS450h_OM_OM30F70U_(U).book Page 475 Monday, January 19, 2015 9:34 AM
Page 482 of 654
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
GS450h_OM_OM30F70U_(U).book Page 481 Monday, January 19, 2015 9:34 AM
Page 483 of 654
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
GS450h_OM_OM30F70U_(U).book Page 482 Monday, January 19, 2015 9:34 AM
Page 484 of 654
GS450h_OM_OM30F70U_(U)
4836-3. Do-it-yourself maintenance
6
Maintenance and care
■Front turn signal lights (vehicles with discharge headlights)
For the left side only: To allow
enough working space, turn
the steering wheel all the way
to the right, then remove the
bolts and take off the cover.
Turn the bulb base counterclockwise.
1
2
XRight side XLeft side
GS450h_OM_OM30F70U_(U).book Page 483 Monday, January 19, 2015 9:34 AM