2010 Lexus IS F Owner's Manual

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4-3. Do-it-yourself maintenance
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13IG210 AIgnition system
14EFI NO. 210 A
Fuel system, exhaust system, multiport
fuel injection system/sequential multi-
port fuel injection system
15H-LP R LWR15 AHeadlight low beam (right)
16H-LP L LWR15 AHeadlight low beam (left)
17F/ P M P25 AFuel system
18EFI25 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
19INJ25 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
20H-LP UPR15 AHeadlight beams
21HORN10 AHorns
22WA S H E R20 AWindshield washer
23FR TAIL10 AParking lights, side marker lights
24FR FOG15 AFront fog lights
FuseAmpereCircuit

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Maintenance and care
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Driver’s side instrument panel
FuseAmpereCircuit
1FR P/SEAT LH30 APo w e r s e a t
2A/C7. 5 AAir conditioning system
3MIR HTR15 AOutside rear view mirror defoggers
4TV NO. 110 ADisplay
5FUEL OPEN10 AFuel filler door opener
6TV NO. 27. 5 A
7PSB30 APre-collision seat belt
8S/ROOF25 AMoon roof
9TA I L10 ATail lights, license plate lights, rear side
marker lights
10PA N E L7. 5 A
Switch illumination, air conditioning
system, display, safety connect, ciga-
rette lighter illumination, shift lever
light, instrument panel lights
11RR FOG7. 5 A
12ECU-IG LH10 A
Cruise control, air conditioning sys-
tem, electric power steering, shift lock
system, moon roof, tire inflation pres-
sure warning system

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FuseAmpereCircuit
13FR S/HTR LH15 ASeat heaters
14RR DOOR LH20 APo w e r w i n d o w s
15FR DOOR LH20 APower windows, outside rear view
mirror (left)
16SECURITY7. 5 ASmart access system with push-button
start
17H-LP LVL7. 5 AAFS
18LH-IG10 A
Charging system, headlight cleaner,
rear window defogger, electric cool-
ing fans, emergency flashers, turn sig-
nal lights, back-up lights, stop lights,
outside rear view mirror defoggers,
seat belts, intuitive parking assist, air
conditioning system
19FR WIP30 AWindshield wipers

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Maintenance and care
10_IS F_U■
Passenger’s side instrument panel
FuseAmpereCircuit
1FR P/SEAT RH30 APo w e r s e a t
2DOOR DL15 A
3OBD7. 5 AOn-board diagnosis system
4STOP SW7. 5 AStop lights, VDIM, shift lock system
5TI & TE20 AElectric tilt and telescopic steering
column
6RAD NO. 310 AAudio system
7GAUGE7. 5 AMeters and gauges
8IGN10 A
SRS airbag system, stop lights, steer-
ing lock system, fuel system, front pas-
senger occupant classification system,
safety connect
9ACC7. 5 A
Clock, air conditioning system, audio
system, navigation system, display,
outside rear view mirrors, smart
access system with push-button start,
glove box light, console box light,
safety connect
10CIG15 ACigarette lighter
11PWR OUTLET15 APo w e r o u t l e t

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4-3. Do-it-yourself maintenance
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FuseAmpereCircuit
12RR DOOR RH20 APo w e r w i n d o w s
13FR DOOR RH20 APower windows, outside rear view
mirrors
14AM27. 5 ASmart access system with push-button
start
15RH-IG7. 5 ASeat belts, intuitive parking assist,
automatic transmission, seat heaters
16FR S/HTR RH15 ASeat heaters
17ECU-IG RH10 A
Power seats, smart access system with
push-button start, outside rear view
mirrors, VDIM, air conditioning sys-
tem, pre-collision seat belt, electric tilt
and telescopic steering, power win-
dows, navigation system, headlights,
front fog lights, parking lights, license
plate lights, windshield washer
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. (→P. 4 2 4 )
●If the replaced fuse blows again, have the vehicle inspected by your Lexus
dealer.
■If there is an overload in the circuits
The fuses are designed to blow before the entire wiring harness is damaged.

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4-3. Do-it-yourself maintenance
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Maintenance and care
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CAUTION
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failing to do so may cause damage, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than indicated, or use any other
object in place of a fuse.
●Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
This can cause extensive damage or even fire.
●Do not modify the fuses or the fuse box.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer.

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Headlight aim
■Removing the engine compartment cover.
→ P. 3 7 3
■ Vertical movement adjusting bolts
Adjustment bolt A
Adjustment bolt B
■ Before checking the headlight aim
Make sure the vehicle has a full tank of gas 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.
■ Adjusting the headlight aim
Turn bolt A in either direction
using a Phillips-head screw-
driver.
Remember the turning direction
and the number of turns.
STEP1
STEP2
STEP3
STEP4
STEP1

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Maintenance and care
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Turn bolt B the same number of
turns and in the same direction
as step 1 using a Phillips-head
screwdriver.
If the headlight cannot be
adjusted using this procedure,
take the vehicle to your Lexus
dealer to adjust the headlight
aim.
STEP2