2014 Lexus IS250 air conditioning

4538-2. Steps to take in an emergency
8
When trouble arises
IS350/250_U (OM53758U)
●Fluid leaks under the vehicle.
(Water dripping from the air conditioning after use is normal.)
●Flat-looking tires or uneven tire wear
●Engine coolant temperature gauge needle continually points higher than nor-
mal.
●Changes in exhaust sound
●Excessive tire squeal when cornering
●Strange noises related to the suspension system
●Pinging or other noises related to the engine
●Engine missing, stumbling or running roughly
●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, spongy feeling, pedal almost touches the floor
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
Audible symptoms
Operational symptoms

4698-2. Steps to take in an emergency
8
When trouble arises
IS350/250_U (OM53758U)
*: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supplement”
for the maintenance interval applicable to your vehicle.
(U.S.A. only)
Indicates that all maintenance is required to correspond
to the driven distance on the maintenance schedule*.
Comes on approximately 5000 miles (8000 km) after
the maintenance data has been reset.
(The indicator will not work properly unless the mainte-
nance data has been reset.)
 Perform the necessary maintenance. Please reset
the maintenance data afte r the maintenance is per-
formed ( P. 3 9 1 )
(If equipped)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
 Turn the high beam on and press the Automatic
High Beam switch again.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-collision brake system
operation is stopped
 Turn the VSC on. ( P. 2 3 6 )
(If equipped)
Indicates that the PCS (Pre-Collision System) is not cur-
rently functional because the grille cover or the sensor is
dirty
 Check the grille cover and the sensor and clean
them if they are dirty.
Indicates that operation of large electricity consuming
systems such as the air conditioning system are sus-
pended
Stop using unnecessary electric components to
reduce electricity consumption. Wait a while until
the electric power supply is restored.
(If equipped)
Indicates that the LDA (Lane Departure Alert) system
cannot be used because the vehicle speed is lower than
approximately 32 mph (50 km/h)
Drive the vehicle at 32 mph (50 km/h) or higher.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)

4948-2. Steps to take in an emergency
IS350/250_U (OM53758U)
●The needle of the engine coolant temperature gauge (P. 81) enters the red
zone or a loss of engine power is experienced. (For example, the vehicle
speed does not increase.)
●Steam comes out from under the hood.
Stop the vehicle in a safe place and tu rn off the air conditioning system, and
then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down
sufficiently, inspect the hoses and
radiator core (radiator) for any
leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Lexus
dealer.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

4958-2. Steps to take in an emergency
8
When trouble arises
IS350/250_U (OM53758U)
The coolant level is satisfactory if it is
between the “FULL” and “LOW”
lines on the reservoir.Reservoir
“FULL”
“LOW”
Add coolant if necessary.
Water can be used in an emergency if
coolant is unavailable.
Start the engine and turn the air conditioning system on to check that the radi-
ator cooling fan operates and to check for coolant leaks from the radiator or
hoses.
The fan operates when the air conditioning system is turned on immediately after a
cold start. Confirm that the fan is operating by checking the fan sound and air flow. If it
is difficult to check these, turn the air conditioning system on and off repeatedly.
(The fan may not operate in freezing temperatures.)
If the fan is not operating:
Stop the engine immediately and contact your Lexus dealer.
If the fan is operating:
Have the vehicle inspected at the nearest Lexus dealer.
4
1
2
3
5
6
7

5319-2. Customization
9
Vehicle specifications
IS350/250_U (OM53758U)
■Lights (P. 1 7 3 )
*: U.S.A. only
■Intuitive parking assist*1 ( P. 2 1 4 )
*1: If equipped
*2: When intuitive parking assist is operating.
■Automatic air conditioning system ( P. 3 4 6 )
FunctionDefault settingCustomized setting
Daytime running light sys-
tem*OnOffO—O
123
FunctionDefault settingCustomized setting
Detection distance of the
front center sensorFarNearO—O
Detection distance of the
rear center sensorFarNearO—O
Buzzer volume31 to 5O—O
Display setting*2All sensors dis-
playedDisplay offO—O
123
FunctionDefault settingCustomized setting
A/C Auto switch operationOnOffO—O
123

552
IS350/250_U (OM53758U)Alphabetical index
Alphabetical index
A/C ............................................................ 346
Air conditioning filter........................425
Automatic air conditioning system ..................................................346
AAC disc ................................................. 287
ABS (Anti-lock Brake System)....... 234 Function .................................................. 234
Warning light ...................................... 455
Accent color.............................................. 88
Adaptive Variable Suspension system ........................... 235
Air conditioning filter .......................... 425
Air conditioning system ..................... 346 Air conditioning filter........................425
Automatic air conditioning system ..................................................346 Airbags .........................................................36
Airbag operating conditions .......... 44
Airbag precautions for your child ....................................... 39
Correct driving posture .................... 28
Curtain shield airbag operating conditions ....................... 44
Curtain shield airbag precautions ............................................ 41
Front passenger occupant classification system..........................47
General airbag precautions ........... 39
Locations of airbags............................ 36
Modification and disposal of airbags............................................... 43
Side airbag operating conditions ............................................. 44
Side airbag precautions .................... 39
Side and curtain shield airbags operating conditions ....................... 44
Side and curtain shield airbags precautions ......................... 39
SRS airbags ............................................. 36
SRS warning light ..............................455
A

559Alphabetical index
IS350/250_U (OM53758U)
Front turn signal lights ..........................170Replacing light bulbs ........... 436, 438
Turn signal lever .................................. 170
Wattage ................................................. 509
Fuel .............................................................. 188 Capacity ................................................ 502
Fuel gauge ................................................. 81
Fuel pump shut off system.............454
Information ............................................. 510
Refueling..................................................188
Type .............................................. 188, 502
Warning light ...................................... 456
Fuel consumption Average fuel economy ...................... 87
Current fuel consumption ................ 87
Fuel filler door ......................................... 188 If the fuel filler door cannot be opened .......................... 190
Refueling..................................................188
Fuel gauge ....................................................81
Fuel pump shut off system................. 454
Fuses .......................................................... 429
Garage door opener .......................... 370
Gauges ..........................................................81
Gear positions ........................................ 168
Glove box ................................................ 359
Glove box light ...................................... 359 Hands-free system
(for cellular phone).............................. 311
HD Radio
® system ................................ 281
Head restraints........................................ 127
Headlights ................................................. 173 Discharge headlights precautions ....................................... 443
Light switch............................................. 173
Replacing light bulbs ....................... 442
Wattage ................................................ 509
Headlights cleaner ................................ 182
Heaters Air conditioning system ................. 346
Heated steering wheel ................... 354
Outside rear view mirrors ............350
Seat heaters ..........................................355
Hill-start assist control ........................234
Hood ......................................................... 399 Open ....................................................... 399
Hooks Cargo hooks ....................................... 362
Coat hooks ........................................... 369
Retaining hooks (floor mat)............. 26
Horn.............................................................. 131
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