
5158-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D19E)
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is not
currently functional because the grille cover or the sen-
sor 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 consumpt ion. 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 50 km/h (32 mph)
→ Drive the vehicle at 50 km/h (32 mph) or higher.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)

5458-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D19E)
CAUTION
■When fixing the flat tire
●Stop your vehicle in a safe and flat area.
●Do not touch the wheels or the area around the brakes immediately after the vehicle
has been driven.
After the vehicle has been driven, the wheels and the area around the brakes may be
extremely hot. Touching these areas with hands, feet or other body parts may result in
burns.
●Connect the valve and hose securely with the tire installed on the vehicle.
●If the hose is not properly connected to the valve, air leakage may occur or sealant
may be sprayed out.
●If the hose comes off the valve while inflating the tire, there is a risk that the hose will
move abruptly due to air pressure.
●After inflation of the tire has completed, the sealant may splatter when the hose is dis-
connected or some air is let out of the tire.
●Follow the operation procedure to repair the tire. If the procedure is not followed, the
sealant may spray out.
●Keep back from the tire while it is being re paired, as there is a chance of it bursting
while the repair operation is being performe d. If you notice any cracks or deforma-
tion of the tire, turn off the compressor sw itch and stop the repair operation immedi-
ately.
●The kit may overheat if operated for a long period of time. Do not operate the com-
pressor continuously for more than 10 minutes.
●Parts of the kit become hot during operation. Be careful handling the kit during and
after operation.
●Do not attach the vehicle speed warning sticker to an area other than the one indi-
cated. If the sticker is attached to an area where an SRS airbag is located, such as the
pad of the steering wheel, it may prevent the SRS air bag from operating properly.
■Driving to spread the liquid sealant evenly
●Drive the vehicle carefully at a low speed. Be especially careful when turning and cor-
nering.
●If the vehicle does not drive straight or you feel a pull through the steering wheel, stop
the vehicle and check the following:
• Tire condition. The tire may have separated from the wheel.
• Tire inflation pressure. If tire infl ation pressure is 130 kPa (1.3 kgf/cm
2 or bar, 19 psi)
or below, this may indicate severe tire damage.

5578-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D19E)
●The needle of the engine coolant temperature gauge (→P. 95) enters the red
zone or a loss of engine power is experienced. (For example, the vehicle
speed does not increase.)
●“Engine Coolant High Temperature” is shown on the multi-information dis-
play.
●Steam comes out from under the hood.
Stop the vehicle in a safe place and turn 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 any authorized
Lexus dealer or repairer, or another
duly qualified and equipped profes-
sional.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

5598-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D19E)
Start the engine and turn the air conditioning system on to check that the radi-
ator cooling fans operate and to check for coolant leaks from the radiator or
hoses.
The fans operate when the air conditioning system is turned on immediately after a
cold start. Confirm that the fans are 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 fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the engine immediately and contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
If the fans are operating:
Have the vehicle inspected at the nearest authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
Check if “Engine Coolant High Temperature” is shown on the multi-informa-
tion display.
If the message does not disappear:
Stop the engine and contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
If the message is not displayed:
Have the vehicle inspected at the nearest authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
6
7
8

583
9
9-2. Customization
Vehicle specifications
IS200t_EE(OM53D19E)
■Stop & Start system (Smart Stop)* (
→ P. 3 9 8 )
*: If equipped
■Lexus parking assist-sensor*1 (→ P. 2 6 6 )
*1: If equipped
*2: When Lexus parking assist-sensor is operating.
■Automatic air conditioning system ( →P. 3 9 8 )
■Seat heaters* (→ P. 409)
*:If equipped
FunctionDefault settingCustomized setting
Change the Stop & Start system
duration when the A/C is onStandardExtended—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
displayedDisplay offO—O
123
FunctionDefault settingCustomized setting
Switching between outside air
and recirculated air mode linked
to “AUTO” switch operationOnOffO—O
A/C Auto switch operationOnOffO—O
123
FunctionDefault settingCustomized setting
Seat heater timer controlOffOnO—O
123

588
IS200t_EE(OM53D19E)What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, new genuine mechanical keys can be made
by any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional. (
→P. 118)
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional immediately. ( →P. 1 2 1 )
●Is the electronic key battery weak or depleted? ( →P. 466)
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( →P. 1 9 7 )
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person.
●The function may not operate properly due to the condition of the radio wave.
(→ P. 136)
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
( → P. 1 2 6 )
If you have a problem, check the foll owing before contacting any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

592
IS200t_EE(OM53D19E)Alphabetical index
Alphabetical index
A/C ........................................................... 398
Air conditioning filter........................ 464
Automatic air conditioning system ................................................. 398
S-FLOW mode................................. 400
Blower customization .................... 405
AAC disc .................................................340
ABS (Anti-lock Brake System) .......285 Function ..................................................285
Warning light ........................................ 501
Accent color ............................................ 104
Air conditioning filter .......................... 464
Air conditioning system .................... 398
Air conditioning filter........................ 464
Automatic air conditioning system ................................................. 398
S-FLOW mode................................. 400
Blower customization .................... 405 Airbags .......................................................... 41
Airbag manual on-off system..........52
Airbag operating conditions ........... 47
Airbag precautions for
your child ...............................................43
Correct driving posture.....................34
Curtain shield airbag operating conditions .............................................. 47
Curtain shield airbag precautions .......................................... 45
General airbag precautions ............43
Locations of airbags ............................. 41
Modification and disposal of airbags.....................................................46
Side airbag operating conditions .............................................. 47
Side airbag precautions.....................43
Side and curtain shield airbags operating conditions ........................ 47
Side and curtain shield airbags
precautions ...........................................43
SRS airbags ............................................... 41
SRS warning light ............................. 500
Airbag manual on-off system ............. 52
Alarm ............................................................ 83
Anchor brackets .......................................67
Antennas (smart entry & start system) .........................................134
A

598Alphabetical index
IS200t_EE(OM53D19E)
Fuel consumptionAverage fuel economy .................... 102
Current fuel consumption.............. 102
Fuel filler door ........................................ 227
If the fuel filler door cannot be opened ......................... 229
Refueling .................................................227
Fuel gauge .................................................. 95
Fuel pump shut off system ................. 499
Fuses .......................................................... 469
Gauges ........................................................95
Gear positions .......................................206
Glove box ................................................. 415
Glove box light ....................................... 415 Hands-free system
(for cellular phone) ........................... 366
Head restraints ....................................... 158
Headlight cleaner...................................219
Headlights .................................................210
Automatic High Beam system.................................................... 213
Discharge headlights precautions ....................................... 486
Follow me home system.................... 211
Light switch............................................. 210
Replacing light bulbs ....................... 485
Wattage ................................................. 573
Heaters ..................................................... 398 Air conditioning system ................. 398
Heated steering wheel ................... 409
Outside rear view mirrors ............ 404
Seat heaters............................................410
Hill-start assist control........................ 285
Hood .......................................................... 439 Open ....................................................... 439
Pop Up Hood ........................................ 54
Hooks
Cargo hooks .........................................418
Coat hooks........................................... 425
Retaining hooks (floor mat) .............32
Horn .............................................................162
G
H