Page 633 of 862
632
GS450h_U (OM30D01U)
6-3. Do-it-yourself maintenance
Fuses(→ P. 6 7 0 )• Fuse with same amperage rating as
original
Headlight aim (→ P. 6 8 5 )• Phillips-head screwdriver
Light bulbs (→ P. 6 8 7 )
• Bulb with same number and wattage
rating as original
• Phillips-head screwdriver
• Flathead screwdriver
•Wrench
Radiator and condenser ( →P. 6 4 4 )
Tire inflation pressure ( →P. 6 6 1 )• Tire pressure gauge
• Compressed air source
Wa s h e r f l u i d (→ P. 646)
• Water or washer fluid containing anti-
freeze (for winter use)
• Funnel (used only for adding water or washer fluid)
ItemsPa r t s a n d t o o l s
GS450h_U.book Page 632 Monday, January 23, 2012 10:20 AM
Page 675 of 862
674
GS450h_U (OM30D01U)
6-3. Do-it-yourself maintenance
■Engine compartment
Fuse layout and amperage ratings
FuseAmpereCircuit
1IGN10Starting system
2INJ10Multiport fuel injection system/sequential
multiport fuel injection system
3EFI NO.210Air intake system, exhaust system
4IG2 MAIN20IGN, GAUGE, INJ, AIR BAG, IG2 NO.1,
LH-IG2
5EFI MAIN25Multiport fuel injection system/sequential
multiport fuel injection system, EFI NO.2
6A/F15Air flow sensor
7EDU20Multiport fuel injection system/sequential
multiport fuel injection system
8F/ P M P25Multiport fuel injection system/sequential
multiport fuel injection system
9H-LP RH-LO20Right-hand headlight (low beam)*
10H-LP LH-LO20Left-hand headlight (low beam)*
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676
GS450h_U (OM30D01U)
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
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 CLN30Headlight cleaner
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
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GS450h_U (OM30D01U)
6776-3. Do-it-yourself maintenance
6
Maintenance and care
*: Low beam and high beam are the same bulb. (vehicles with discharge headlights)
52ABS NO.130ECB
53ECU-B NO.27. 5No circuit
54DEICER25Windshield wiper de-icer
55ABS MAIN 310Brake system
56FILTER10Condenser
57A/C W/P7. 5Air conditioning system
58SPARE10Spare fuse
59SPARE30Spare fuse
60SPARE20Spare fuse
FuseAmpereCircuit
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678
GS450h_U (OM30D01U)
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, headlight
cleaner
10LH ECU-IG10
VDIM, ECB, D-SW MODULE (Blind Spot
Monitor, heated steering wheel), driver sup-
port system, AFS, EPB, air conditioning sys-
tem
GS450h_U.book Page 678 Monday, January 23, 2012 10:20 AM
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685
GS450h_U (OM30D01U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Headlight aim
Make sure the vehicle has a full tank of gasoline and the area around
the headlight is not deformed.
Park the vehicle on level ground.
Sit in the driver’s seat.
Bounce the vehicle several times.
Vertical movement adjusting bolts
XDischarge headlights XLED headlights
Adjustment bolt A
Adjustment bolt B
Before checking the headlight aim
1
2
1
2
3
4
GS450h_U.book Page 685 Monday, January 23, 2012 10:20 AM
Page 687 of 862
686
GS450h_U (OM30D01U)
6-3. Do-it-yourself maintenance
Using a Phillips-head screwdriver, turn bolt A in either direction.
Remember the turning direction and the number of turns.
Turn bolt B the same number of turns and in the same direction as step.
If the headlight cannot be adjusted using this procedure, take the vehicle to your
Lexus dealer to adjust the headlight aim.
Adjusting the headlight aim
1
XDischarge headlights XLED headlights
2
1
XDischarge headlights XLED headlights
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