2013 Lexus IS250 air condition

440
4-3. Do-it-yourself maintenance
9ACC7. 5 A
Clock, air conditioning system, audio,
navigation system, outside rear view
mirrors, Lexus parking assist monitor,
glove box light, console box light, mul-
tiplex communication system, display,
smart access system with push-but-
ton start
10CIG15 ACigarette lighter
11PWR OUTLET15 APo w e r o u t l e t
12RR DOOR RH20 APo w e r w i n d o w s
13FR DOOR RH20 A
Power windows, outside rear view
mirrors, multiplex communication sys-
tem
14AM27. 5 AStarting system
15RH-IG7. 5 A
Seat belts, intuitive parking assist,
automatic transmission, seat heater
and ventilator, windshield wiper de-
icer
16FR S/HTR RH15 ASeat heaters and ventilators
17ECU-IG RH10 A
Power seats, smart access system with
push-button start, AWD system, out-
side rear view mirrors, VDIM, air con-
ditioning system, electric tilt and
telescopic steering, power windows,
navigation system, multiplex commu-
nication system
FuseAmpereCircuit

5
When trouble arises
461
5-1. Essential information
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
■Visible symptoms
●Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temper ature gauge needle continually points
higher than normal
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
■ Operational symptoms
●Engine missing, stumbling or running rough
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, sp ongy feeling, pedal almost touches
the floor

504
5-2. Steps to take in an emergency
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place and turn off the automatic air
conditioning system.
Check to see if steam is coming out from under the hood.
If you see steam: Stop the engine. Carefully lift the hood after the steam sub-
sides and then restart the engine.
If you do not see steam: Leave the engine running and carefully lift the hood.
Check to see if the cool ing fans are operating.
If the fans are operating: Wait until the temperature of the engine (shown on the
instrument cluster) begins to fall and then stop the engine.
If the fans are not operating: Stop the engine immediately and call your local Lexus
dealer.
After the engine has cooled
down sufficiently, check the
engine coolant level and inspect
the radiator core (radiator) for
any leaks.
If the engine compartment
cover needs to be removed:
P. 3 9 3
STEP1
STEP2
STEP3
STEP4

535
6-1. Specifications
6
Vehicle specifications
■Temperature A, B, C
The temperature grades are A (the hi ghest), 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 Mo tor 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 excess ive loading, either separately or in
combination, can cause heat build up and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
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)
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
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipped, air conditioning and
additional weight optional engine

Index
565
Abbreviation list .................... 566
Alphabetical index ................. 568
What to do if... ....................... 582
For vehicles with a navigation system, refer to the “Naviga-
tion System Owner’s Manual ” for information regarding
the equipment listed below.
• Navigation system
• Audio/video system
• Air conditioning
• Rear window and outside rear view mirror defogging
• Climate control
• Rear view monitor system
• Intuitive parking assist

568
Alphabetical index
Alphabetical index
A/C* ........................................................... 210
ABS................................................................191
Air conditioning filter .......................... 424
Air conditioning systemAir conditioning filter ....................... 424
Automatic air conditioning system*..................................................210
Airbags Airbag operating conditions..........102
Airbag precautions for your child........................................................ 105
Airbag warning light ........................ 464
Curtain shield airbag operating conditions.............................................102
Curtain shield airbag
precautions ........................................ 105
Front passenger occupant classification system......................... 110
General airbag precautions ......... 105
Locations of airbags............................ 99
Modification and disposal of airbags .................................................. 109
Proper driving po sture ............97, 105
Side airbag operating conditions.............................................102
Side airbag precautions .................. 105
SRS airbags ............................................. 99
Alarm ............................................................ 93
Antenna* ..................................................228 Anti-lock brake system ......................... 191
Armrest .................................................... 343
Ashtrays.................................................... 336
Assist grips .............................................. 348
Audio input* ........................................... 265
Audio system*
Antenna.................................................. 228
AUX port .............................................. 265
Bluetooth
® audio ..............................270
CD player/changer ........................... 231
iPod ...........................................................246
MP3/WMA disc............................... 238
Optimal use ..........................................263
Portable music player ..................... 265
Radio ........................................................ 223
Steering wheel audio switch.........267
USB memory ...................................... 254
USB port ............................................... 254
Automatic air conditioning system* ................................................... 210
Automatic headlight leveling system ......................................................170
Automatic light control system......... 167
Automatic transmission Automatic transmission ................... 144
If the shift lever cannot be shifted from P................................... 494
S mode ..................................................... 147
AUX port* .............................................. 265
Auxiliary box .......................................... 329
A