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419
4-3. Do-it-yourself maintenance
4
Maintenance and care
ES350_U■
Driver’s side instrument panel
FuseAmpereCircuit
1RR DOOR RH25 APower window
2RR DOOR LH25 APower window
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
7STO P10 AStop lights
8TI & TE30 ATilt and telescopic steering
9A/C7. 5 AAir conditioning system
10PWR25 APower windows
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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420
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 - L P LV L7. 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 APower outlet
28RADIO NO. 27. 5 AAudio system
29MIR HTR15 AOutside rear view mirror defoggers
FuseAmpereCircuit
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421
4-3. Do-it-yourself maintenance
4
Maintenance and care
ES350_U
30POWER30 APower window
31P/ S E AT30 APower seat
■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, 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
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5
When trouble arises
451
5-2. Steps to take in an emergency
ES350_U
■If the tire pressure warning system is inoperative
The tire pressure warning system will be disabled in the following conditions:
(When the condition becomes normal, the system will work properly.)
●If tires not equipped with tire pressure warning valves and transmitters are used.
●If the ID code on the tire pressure warning valves and transmitters is not regis-
tered in the tire pressure warning computer.
●If the tire pressure warning select switch is set to a different tire setting.
●If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or higher.
The tire pressure warning system may be disabled in the following conditions:
(When the condition becomes normal, the system will work properly.)
●If electronic devices or facilities using similar radio wave frequencies are nearby.
●If a radio set at similar frequencies is in use in the vehicle.
●If a window tint that affects the radio wave signals is installed (vehicles with full-
size spare tire).
●If there is a lot of snow or ice on the vehicle, in particular around the wheels or
wheel housings.
●If non-genuine Lexus wheels are used. (Even if you use Lexus wheels, the tire
pressure warning system may not work properly with some types of tires.)
●If tire chains are used.
●If the full-size spare tire is in a location subject to poor radio wave signal recep-
tion.
●If a large metallic object which can interfere with signal reception is put in the
trunk (vehicles with full-size spare tire).
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480
5-2. Steps to take in an emergency
ES350_U
If the electronic key does not operate properly
Locking and unlocking the doors and key linked functions
Use the mechanical key built in to the electronic keys to operate the
doors. (→ P. 2 4 )
Remove the cover on the driver’s
door handle.
Locks all doors
Closes the windows/standard
moon roof (turn and hold)
Unlocks the door
Turning the key rearward unlocks
the driver's door. Turning the key
once again unlocks the other
doors.
Opens the windows/standard
moon roof (turn and hold)
If communication between the electronic key and vehicle is interrupted
(→ P. 30) or the electronic key cannot be used because the battery is
depleted, smart access system with push-button start and wireless remote
control cannot be used. In such cases, the doors can be opened or the
engine can be started by following the procedure below.
STEP1
STEP2
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510
6-1. Specifications
ES350_U■
Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing
the tire's resistance to the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a specified indoor
laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire fail-
ure.
The grade C corresponds to a level of performance which all passenger car
tires must meet under the Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory
test wheel than the minimum required by law.
Warning: The temperature grades for this tire are established for a tire that
is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, power steering, power brakes, power windows,
power seats, radio and heater, to the extent that these
items are available as factory-installed equipment
(whether installed or not)
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546
Alphabetical index
ES350_U
Child safetyAirbag precautions.............................. 92
Battery precautions ............. 392, 485
Child restraint system........................102
Child-protectors ..................................... 41
How your child should wear
the seat belt .......................................... 60
Installing child restraints .................. 106
Moon roof precautions ..................... 75
Power window lock switch.............. 68
Power window precautions ............ 70
Removed electronic key
battery precautions ......................... 412
Seat belt comfort guide..................... 58
Seat belt extender precautions ..... 62
Seat belt precautions .......................... 60
Seat heater precautions .....330, 333
Trunk precautions ................................ 46
Child-protectors ....................................... 41
Cigarette lighter....................................328 Cleaning
Exterior ....................................................362
Interior..................................................... 365
Seat belts ............................................... 366
Clock ......................................................... 326
Coat hooks.............................................. 338
Compass .................................................. 349
Condenser ..............................................388
Console box .............................................319
Cooling system Engine overheating.......................... 486
Cornering assist sensors ...................... 171
Cruise control Cruise control....................................... 155
Dynamic radar crui se control.......158
Cup holders ..............................................321
Curtain shield airbags ........................... 86
Customizable features .........................517
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547
Alphabetical index
ES350_U
Daytime running light system............ 149
DefoggerRear window.......................................... 215
Side mirror .............................................. 215
Dimension ................................................492
Dinghy towing ....................................... 204
Display Dynamic radar cruise control ...... 158
Trip information .................................... 143
Warning message ............................ 455
Do-it-yourself maintenance.............. 374
Door courtesy lights Door courtesy lights .......................... 314
Wattage .................................................. 501
Doors Door glasses........................................... 68
Door lock ............................... 26, 38, 40
Side mirrors............................................. 66
Driver's seat belt reminder light ..... 447
Driving Break-in tips .............................................119
Correct posture .................................... 84
Procedures .............................................. 118
Winter driving tips ................................191
Driving position memory ......................49 Electronic key
If the electronic key does not
operate properly ........................... 480
Emergency, in case of
If the electronic key does not operate properly ........................... 480
If the engine will not start................ 476
If the shift lever cannot be shifted from P ...................................478
If the vehicle battery is
discharged ........................................ 483
If the warning buzzer sounds ......445
If the warning light turns on...........445
If the warning message is
displayed............................................ 455
If you have a flat tire ......................... 467
If you lose your keys ......................... 479
If you think something is
wrong .....................................................441
If your vehicle becomes stuck .... 489
If your vehicle has to be stopped in an emergency ......... 490
If your vehicle needs to be towed....................................................435
If your vehicle overheats ............... 486DE