Air conditioning Lexus IS300h 2013 Owner's Guide

4717-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53B95E)
Remove the air conditioning fil-
ter from the filter case and
replace it with a new one.
The “UP” marks shown on the fil-
ter and the filter case should be
pointing up.
Checking interval
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement may
be required. (For scheduled maintenance information, please refer to the “Lexus
Service Booklet” or “Lexus Warranty Booklet”.)
If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
5
NOTICE
When using the air conditioning system
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the sys-
tem.

5068-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
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 normal.
Changes in exhaust sound
Excessive tire squeal when cornering
Strange noises related to the suspension system
Pinging or other noises related to the hybrid system
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 any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional as soon as
possible.
Visible symptoms
Audible symptoms
Operational symptoms

5238-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
(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-crash brake
system operation is stopped
Turn the VSC on. (P. 295)
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is
not currently 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 consum-
ing systems such as the air conditioning system are
suspended
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) sys-
tem cannot be used because the vehicle speed is
lower than approximately 50 km/h (32 mph)
Drive the vehicle at 50 km/h (32 mph) or higher.
Warning messageDetails/Actions
(Flashes)

5568-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
The needle of the engine coolant temperature gauge (P. 110) enters
the red zone or a loss of hybrid system power is experienced. (For
example, the vehicle speed does not increase.)
“Hybrid System Overheat” is shown on the multi-information display.
Steam comes out from under the hood.
If the needle of the engine coolant temperature gauge enters the red
zone
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system 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 any
authorized Lexus dealer or
repairer, or another duly quali-
fied and equipped professional.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
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2
3
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2

5578-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
The coolant level is satisfac-
tory 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 emer-
gency if coolant is unavailable.
Start the hybrid system and turn the air conditioning system on to
check that the radiator 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 immedi-
ately 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 hybrid system immediately and contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional.
If the fan is operating:
Have the vehicle inspected at the nearest authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
If “Hybrid System Overheat” is shown on the multi-information dis-
play
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
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583
9 9-2. Customization
Vehicle specifications
IS300h_EE(OM53B95E)
Lexus parking assist-sensor*1 (P. 271)
*1: If equipped
*2: When Lexus parking assist-sensor is operating.
Automatic air conditioning system (P. 398)
FunctionDefault set-
tingCustomized set-
ting
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
displayedDisplay offO——O
1234
FunctionDefault set-
tingCustomized set-
ting
Switching between out-
side air and recirculated
air mode linked to
“AUTO” switch operation
OnOffO——O
A/C Auto switch opera-
tionOnOffO——O
1234

592
IS300h_EE(OM53B95E)Alphabetical index
Alphabetical index
A/C ............................................398
Air conditioning filter ...........470
Automatic air conditioning
system.................................398
S-FLOW mode .....................400
Blower customization ...........405
AAC disc ...................................341
ABS (Anti-lock Brake System) .293
Function ................................293
Warning light........................508
Accent color ..............................118
Adaptive Variable Suspension
system .....................................294
Air conditioning filter ...............470
Air conditioning system ............398
Air conditioning filter ...........470
Automatic air conditioning
system.................................398
S-FLOW mode .....................400
Blower customization ...........405Airbags ....................................... 43
Airbag manual on-off system 54
Airbag operating conditions .. 49
Airbag precautions for
your child ............................ 45
Correct driving posture .......... 36
Curtain shield airbag operating
conditions ............................ 49
Curtain shield airbag
precautions .......................... 47
General airbag precautions .... 45
Locations of airbags............... 43
Modification and disposal of
airbags ................................. 48
Side airbag operating
conditions ............................ 49
Side airbag precautions.......... 45
Side and curtain shield airbags
operating conditions ............ 49
Side and curtain shield airbags
precautions .......................... 45
SRS airbags............................ 43
SRS warning light................ 508
Airbag manual on-off system ..... 54
Alarm .......................................... 96
Anchor brackets.......................... 70
Antennas (smart entry &
start system) .......................... 149
A

599Alphabetical index
IS300h_EE(OM53B95E)
Fuel ............................................241
Capacity ................................564
Fuel gauge ............................110
Information ...........................573
Refueling ..............................241
Type ..............................241, 564
Warning light........................509
Fuel consumption ......................125
Average fuel economy..........117
Current fuel consumption .....117
Fuel filler door...........................241
If the fuel filler door
cannot be opened................243
Refueling ..............................241
Fuel gauge .................................110
Fuses ..........................................475
Gauges .......................................110
Glove box ..................................414
Glove box light ..........................414Hands-free system
(for cellular phone) ................ 367
Head restraints .......................... 173
Headlight cleaner...................... 235
Headlights................................. 226
Automatic High Beam
system................................ 229
Discharge headlights
precautions ........................ 494
Follow me home system ...... 227
Light switch ......................... 226
Replacing light bulbs ........... 493
Wattage ................................ 572
Heaters ...................................... 398
Air conditioning system....... 398
Heated steering wheel.......... 409
Outside rear view mirrors .... 404
Seat heaters .......................... 410
Hill-start assist control.............. 293
High-voltage components........... 83
Hood ......................................... 437
Open..................................... 437
Pop Up Hood ......................... 56
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