fuse Lexus ES350 2012 User Guide

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4-3. Do-it-yourself maintenance
ES350_U
Fuse layout and amperage ratings■ Engine compartment
FuseAmpereCircuit
1PSB30 APre-collision seat belt
2H-LP CLN30 A
3P- P / S E AT30 APo w e r s e a t
4RR DEF50 ARear window defogger
5ABS NO.230 AAnti-lock brake system, vehicle stabil-
ity control system
6FA N M A I N50 AElectric cooling fans
7ABS NO.150 AAnti-lock brake system, vehicle stabil-
ity control system
8HTR50 AAir conditioning system
9RR FOG10 A
10ALT-CDS10 AAlternator condenser
11ST30 AStarting system

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4-3. Do-it-yourself maintenance
4
Maintenance and care
ES350_U
12ALT140 A
PSB, H-LP CLN, P-P/SEAT, RR DEF,
ABS NO.2, FAN MAIN, ABS NO.1,
HTR, RR FOG, RR DOOR RH, RR
DOOR LH, FUEL OPN, FR FOG,
OBD, STOP, TI & TE, A/C, PWR,
DOOR NO.2, S/ROOF, GAUGE
NO.2, POWER, P/SEAT
13STR LOCK20 ASteering lock system
14IG220 A
GAUGE NO.2, IGN, multiport fuel
injection system/sequential multiport
fuel injection system
15HAZ15 ATu r n s i g n a l l i g h t s
16ETCS10 AElectronic throttle control system
17E-ACM10 AElectric active control mount
18A/C CTRL PNL15 AAir conditioning system
19MAYDAY10 AMAYDAY
20ALT-S7. 5 ACharging system
21AM27. 5 AStarting system
22EFI MAIN30 AEFI NO.2, EFI NO.3, fuel system, ECT
system
23AMP30 AAudio system
24AMP230 AAudio system
25DOOR NO.125 APower door lock system
26RADIO NO.115 AAudio system
27ECU-B NO.110 AECU powers
28DOME10 AInterior lights, meters, vanity lights
29H-LP (LH)15 ALeft-hand headlight (high beam)
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
ES350_U
30H-LP (RH)15 ARight-hand headlight (high beam)
31H-LP (LL)15 ALeft-hand headlight (low beam)
32H-LP (RL)15 ARight-hand headlight (low beam)
33HORN10 AHorns
34EFI NO.110 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem, ECT system
35MPX-B10 AMeters
36A/F20 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
37S-HORN7. 5 AS-HORN
38EFI NO.215 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
39EFI NO.310 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
4
Maintenance and care
ES350_U■
Driver’s side instrument panel
FuseAmpereCircuit
1RR DOOR RH25 APo w e r w i n d o w
2RR DOOR LH25 APo w e r w i n d o w
3FUEL OPN7. 5 AFuel filler door opener
4FR FOG15 AFront fog lights
5OBD7. 5 AOn-board diagnosis system
6ECU-B NO.27. 5 AECU powers
7STOP10 AStop lights
8TI & TE30 ATilt and telescopic steering
9A/C7. 5 AAir conditioning system
10PWR25 APo w e r w i n d o w s
11DOOR NO.225 AMain body ECU
12S/ROOF30 AMoon roof
13TA I L10 AFront and rear side marker lights, tail
lights, license plate lights
14PA N E L7. 5 ASwitch illumination

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4-3. Do-it-yourself maintenance
ES350_U
15ECU-IG NO. 110 A
Moon roof, seat heaters, power win-
dows, clock, automatic windshield
wiper, electric cooling fans, driving
position memory system, seat position
memory system
16ECU-IG NO. 27. 5 A
Anti-lock brake system, vehicle stabil-
ity control system, traction control sys-
tem, brake assist system, cruise
control system, stop lights, shift lock
control system
17A/C NO. 210 AAir conditioning system, rear window
defogger
18WA S H10 AWindshield washer
19S-HTR20 ASeat heaters, air conditioning system
20GAUGE NO. 110 AEmergency flashers, back-up lights,
rear sunshade, charging system
21WIP25 AWindshield wipers
22H-LP LVL7. 5 AHeadlight leveling system
23IGN10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem, SRS airbag system, steering lock
system
24GAUGE NO. 27. 5 AMeters
25ECU-ACC7. 5 AClock, main body ECU
26CIG20 ACigarette lighter
27PWR OUTLET20 APo w e r o u t l e t
28RADIO NO. 27. 5 AAudio system
29MIR HTR15 AOutside rear view mirror defoggers
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4-3. Do-it-yourself maintenance
4
Maintenance and care
ES350_U
30POWER30 APo w e r w i n d o w
31P/ S E AT30 APo w e r s e a t
■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 0 )
●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, protecting the wiring harness from damage.
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 fuses or the fuse box.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer.
FuseAmpereCircuit

470
5-2. Steps to take in an emergency
ES350_U
If the engine will not start
If the engine will not start even though correct starting procedures are
being followed (
→P. 128), consider each of the following points.
■The engine will not start even when the starter motor operates
normally.
One of the following may be the cause of the problem.
● There may not be sufficient fuel in the vehicle’s tank.
Add fuel to the vehicle.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. ( →P. 1 2 8 )
● There may be a malfunction in the engine immobilizer system.
(→ P. 8 1 )
■ The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
One of the following may be the cause of the problem.
● The battery may be discharged. ( →P. 4 7 7 )
● The battery terminal connections may be loose or corroded.
■ The starter motor does not turn over
One of the following may be the cause of the problem.
● The engine starting system may be malfunctioning due to an elec-
trical problem such as an open circuit or a blown fuse. However,
an interim measure is available to start the engine. ( →P. 4 7 1 )

542
Alphabetical index
ES350_U
Emergency flashersSwitch ......................................................430
Engine Compartment ......................................377
Engine switch.........................................128
Hood........................................................ 374
How to start the engine....................128
Identification number....................... 487
If the engine will not start ............... 470
Ignition switch........................................128
Overheating........................................ 480
Engine compartment cover .............378
Engine coolant Capacity.................................................490
Checking ............................................... 382
Preparing and checking
before winter ......................................196
Engine coolant temperature
gauge ....................................................... 138
Engine immobilizer system................... 81
Engine oil Capacity.................................................489
Checking ............................................... 379
Preparing and checking
before winter ......................................196
Event data recorder ...............................20
Floor mat .................................................. 337
Fluid Brake........................................................384
Power steering fluid .........................385
Washer ...................................................389
Fog lights Switch ........................................................154
Wattage.................................................. 495 Foot well lighting.....................................312
Front fog lights
Switch........................................................ 154
Wattage ................................................. 495
Front passenger occupant classification system ............................ 99
Front passenger's seat belt reminder light .......................................441
Front seats Adjustment .............................................. 50
Driving position memory ................... 51
Seat position memory........................ 55
Front side marker lights Replacing light bulbs ....................... 420
Wattage ................................................. 495
Front turn signal lights
Replacing light bulbs ....................... 420
Wattage ................................................. 495
Fuel Capacity ................................................488
Fuel gauge .............................................. 138
Fuel pump shut off system ............ 438
Gas station information ................. 552
Information ........................................... 496
Refueling ....................................................78
Fuel door ..................................................... 78
Fuel filler door ........................................... 78
Fuel pump shut off system.................438
Fuses .......................................................... 409
Garage door opener .......................... 340
Gas station information ..................... 552
Gauges ...................................................... 138
Glove box ..................................................316
Glove box light ........................................316
Grocery bag hooks .............................338
F
G

545
Alphabetical index
ES350_U
Radar cruise control ............................. 164
Radiator.................................................... 384
Radio* ......................................................... 217
Radio data system*................................ 218
RDS*............................................................ 218
Rear side marker lightsReplacing light bulbs ....................... 420
Wattage ................................................. 495
Rear sunshade....................................... 333
Rear turn signal lights Replacing light bulbs ....................... 420
Wattage ................................................. 495
Rear window defogger ........................ 213
Replacing Electronic key battery ..................... 407
Fuses ........................................................ 409
Light bulbs ............................................ 420
Reporting safety defects for
U.S. owners ..........................................522
Reset the maintenance
data ......................................................... 365 Safety Connect..................................... 350
Seat belts
Adjusting the seat belt ........................60
Automatic Locking Retractor...........61
Child restraint system installation............................................108
Cleaning and maintaining the seat belts .....................................362
Emergency Locking Retractor ........61
How to wear your seat belt .............59
How your child should wear the seat belt .......................................... 62
Pregnant women, proper seat belt use ...........................61
Reminder light .......................................441
Seat belt extenders .............................. 62
Seat belt pretensioners ......................60
Seat heaters ................................ 328, 330
Seat position memory ............................ 55
Seat ventilators ......................................330
Seating capacity ..................................... 195RS
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.