system Lexus IS F 2011 Owner's Manual

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4-3. Do-it-yourself maintenance
4
Maintenance and care
IS F_EE
Fuse layout and amperage ratings
Engine compartment (type A fuse box)
Left-hand drive vehicles
Right-hand drive vehicles
FuseAmpereCircuit
1A LT- S7.5 ACharging system
2TURN-HAZ15 AEmergency flashers, turn signals
3IG2 MAIN20 AIG2, IGN, GAUGE
4RAD NO. 230 AAudio system
5D/C CUT20 ADOME, MPX-B
6RAD NO. 130 AAudio system

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7MPX-B10 A
Headlights, front fog lights, front
position lights, windshield washer,
horns, power door lock system,
power windows, power seats, elec-
tric tilt and telescopic steering col-
umn, meters and gauges, smart
entry & start system, outside rear
view mirrors, air conditioning sys-
tem, multiplex communication
system
8DOME10 AInterior lights, meters and gauges,
outer foot lights
9CDS10 AElectric cooling fans
10E/G-B60 AFR CTRL-B, ETCS, A/F, STR
LOCK, INJ2
11P/I-B60 AEFI, F/PMP, INJ
12ABS150 AVDIM
13RH J/B-B30 AFR DOOR RH, RR DOOR RH,
AM2
14VVT40 A
Multiport fuel injection system/
sequential multiport fuel injection
system
15MAIN30 AH-LP L LWR, H-LP R LWR,
headlight low beams
16STARTER30 ASmart entry & start system
17LH J/B-B30 AFR DOOR LH, RR DOOR LH,
SECURITY
18EPS80 AElectric power steering
FuseAmpereCircuit

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Maintenance and care
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19ALT180 A
LH J/B-AM, E/G-AM, HEATER,
FAN1, FAN2, DEFOG, RH J/B-
AM, ABS2
20LH J/B-AM80 A
S/ROOF, FR P/SEAT LH, TV NO.
1,
A/C, F/OPN, PSB, RR FOG,
FR WIP, H-LP LVL, LH-IG,
ECU-IG LH, PANEL, TAIL,
TV NO. 2, FR S/HTR LH, MIR
HTR
21RH J/B-AM80 A
OBD, STOP SW, TI & TE, FR P/
SEAT RH, DOOR DL, RAD NO.
3,
ECU-IG RH, RH-IG, FR S/HTR
RH, ACC, CIG, PWR OUTLET
22ABS230 AVDIM
23DEFOG50 ARear window defogger
24FA N 240 AElectric cooling fans
25FA N 140 AElectric cooling fans
26HEATER50 ACDS, air conditioning system
27E/G-AM60 AH-LP CLN, FR CTRL AM,
DEICER
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
IS F_EEEngine compartment (type B fuse box)
FuseAmpereCircuit
1SPARE30 ASpare fuse
2SPARE25 ASpare fuse
3SPARE10 ASpare fuse
4FR CTRL-B25 AHORN, H-LP HI
5A/F15 AExhaust system
6ETCS10 A
Multiport fuel injection system/
sequential multiport fuel injection
system
7TEL10 A
8INJ2 25 A
Multiport fuel injection system/
sequential multiport fuel injection
system
9STR LOCK25 ASteering lock system
10H-LP CLN30 AHeadlight cleaner
11DEICER25 AWindshield wiper de-icer
12FR CTRL-AM30 AFR FOG, WASHER, FR TAIL

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Maintenance and care
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13IG210 AIgnition system
14EFI NO. 210 A
Fuel system, exhaust system, mul-
tiport fuel injection system/sequen-
tial multiport fuel injection system
15H-LP R LWR15 AHeadlight low beam (right)
16H-LP L LWR15 AHeadlight low beam (left)
17F/PMP25 AFuel system
18EFI25 A
Multiport fuel injection system/
sequential multiport fuel injection
system, EFI NO. 2
19INJ25 A
Multiport fuel injection system/
sequential multiport fuel injection
system
20H-LP UPR20 AHeadlight high beams
21HORN10 AHorns
22WASHER20 AWindshield washer
23FR TAIL10 AFront position lights
24FR FOG15 AFront fog lights
FuseAmpereCircuit

402
4-3. Do-it-yourself maintenance
IS F_EELeft side instrument panel
FuseAmpereCircuit
1FR P/SEAT LH30 APower seat
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 ALexus parking assist monitor
7PSB30 APre-crash seat belt
8S/ROOF25 AMoon roof
9TA I L10 ATail lights, license plate lights
10PANEL7.5 A
Switch illumination, air condition-
ing system, display, cigarette
lighter illumination, shift lever
light, instrument panel lights
11RR FOG7.5 ARear fog lights
12ECU-IG LH10 A
Cruise control, air conditioning
system, electric power steering,
shift lock system, moon roof,
Lexus parking assist monitor
13FR S/HTR LH15 ASeat heaters

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Maintenance and care
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14RR DOOR LH20 APower windows
15FR DOOR LH20 APower windows, outside rear view
mirror (left)
16SECURITY7.5 ASmart entry & start system
17H-LP LVL7.5 AAutomatic headlight leveling sys-
tem
18LH-IG10 A
Charging system, headlight
cleaner, rear window defogger,
electric cooling fans, emergency
flashers, turn signal lights, back-up
lights, stop lights, outside rear
view mirror defoggers, seat belts,
Lexus parking assist-sensor, air
conditioning system
19FR WIP30 AWindshield wipers
FuseAmpereCircuit

404
4-3. Do-it-yourself maintenance
IS F_EERight side instrument panel
FuseAmpereCircuit
1FR P/SEAT RH30 APower seat
2DOOR DL15 APower door lock system
3OBD7.5 AOn-board diagnosis system
4STOP SW7.5 A
Stop lights, VDIM, shift lock sys-
tem,
multiport fuel injection system/
sequential multiport fuel injection
system,
smart entry & start system
5TI & TE20 AElectric tilt and telescopic steering
column
6RAD NO. 310 AAudio system
7GAUGE7.5 AMeters and gauges
8IGN10 ASRS airbag system, stop lights,
steering lock system, fuel system
9ACC7.5 A
Clock, air conditioning system,
audio system, navigation system,
display, outside rear view mirrors,
smart entry & start system, Lexus
parking assist monitor, glove box
light, console box light
10CIG15 ACigarette lighter
11PWR OUTLET15 APower outlet
12RR DOOR RH20 APower windows

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Maintenance and care
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13FR DOOR RH20 APower windows, outside rear view
mirrors
14AM27.5 ASmart entry & start system
15RH-IG7.5 A
Seat belts, Lexus parking assist-
sensor, automatic transmission,
seat heaters, windshield wiper de-
icer
16FR S/HTR RH15 ASeat heaters
17ECU-IG RH10 A
Power seats, smart entry & start
system, VDIM, air conditioning
system, pre-crash seat belt, electric
tilt and telescopic steering column,
power windows, navigation sys-
tem, headlights, front fog lights,
front position lights, license plate
lights, windshield washer, outside
rear view mirrors
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. 407)
If the replaced fuse blows again, have the vehicle inspected by any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
If there is an overload in the circuits
The fuses are designed to blow, protecting the wiring harness from damage.
FuseAmpereCircuit

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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 any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional, as soon as possible.