Page 7 of 594

TABLE OF CONTENTSIndex
6
IS350/250_U
5-1. Essential informationEmergency flashers..................... 462
If your vehicle needs to be towed.............................................. 463
If you think something is wrong ............................................. 469
Fuel pump shut off system ........ 470
5-2. Steps to take in an emergency If a warning light turns on or a warning buzzer
sounds... ......................................... 471
If a warning message is displayed ........................................ 481
If you have a flat tire..................... 492
If the engine will not start ........... 501
If the shift lever cannot be shifted from P ............................. 503
If you lose your keys ................... 504
If the electronic key does not operate properly .............. 505
If the vehicle battery is discharged .................................... 510
If your vehicle overheats ............ 513
If the vehicle becomes stuck................................................. 516
If your vehicle has to be stopped in an emergency ....... 518 6-1. Specifications
Maintenance data (fuel, oil level, etc.).................... 520
Fuel information ............................ 537
Tire information.............................. 541
6-2. Customization Customizable features.............. 553
6-3. Initialization Items to initialize .......................... 559
Reporting safety defects for U.S. owners........................... 562
Seat belt instructions for Canadian owners
(in French) .................................... 563
SRS airbag instructions for Canadian owners
(in French) ................................... 565
5When trouble arises6Vehicle specifications
7For owners
Page 14 of 594
IS350/250_U
13
C
Automatic transmission
Manual transmission
Seat heater switches ∗
Seat heater/ventilator switches
∗
P. 345
P. 348
Automatic transmission shift lever P. 146
Shift lock override button P. 503
Cigarette lighter ∗
Ashtray
∗
Auxiliary box
∗
P. 343
P. 342
P. 335
Manual transmission shift lever P. 152
Parking brake lever P. 155
Cigarette lighter ∗
Ashtray
∗
Auxiliary box
∗
P. 343
P. 342
P. 335
Seat heater switches ∗
Seat heater/ventilator switches
∗
P. 345
P. 348
∗: If equipped
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IS350/250_U
14
Pictorial indexInstrument panel
Headlight switch Turn signal lever
Fog light switch P. 172
P. 154
P. 176
Shift paddle switches (automatic transmission) P. 147, 149
Gauges and meters P. 158
Multi-information display P. 167
Windshield wiper and washer switch P. 178
Engine (ignition) switch P. 141
Trunk opener main switch P. 52
Glove box P. 329
Tilt and telescopic steering lock release lever ∗ P. 72
Tilt and telescopic steering control switch ∗ P. 73
Parking brake pedal (automatic transmission) P. 155
Audio remote control switches P. 273
Horn P. 157
Hood release lever P. 394
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21
Vehicle control and operation data recording
Your Lexus is equipped with sophisticated computers that record certain informa-
tion about your vehicle’s operation, such as:
• Engine speed
• Accelerator status
•Brake status
•Vehicle speed
• Shift position (except manual transmission)
The data recorded varies according to the grade level and options the vehicle is
equipped with. The computers do not record conversations, sound or pictures.
●Data usage
Lexus may use the data recorded in these computers to diagnose malfunctions,
conduct research and development, and improve quality.
Lexus will not disclose the recorded data to a third party except:
• With the consent of the vehicle owner or with the consent of the lessee if the vehicle is leased
• In response to an official request by the police, a court of law or a government agency
• For research purposes where the data is not tied to a specific vehicle or vehicle
owner
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22
●Event data recorder
Your vehicle has computers that monitor and control certain aspects of your vehi-
cle. These computers assist in driving and maintaining optimal vehicle performance.
Besides storing data useful for troubleshooting, there is an event data recorder
(EDR) that records data in a crash or near crash event.
The SRS airbag sensor assembly contains the EDR. In a crash or near crash event,
this device may record the following information:
• Engine speed
• Whether the brake pedal was depressed or not
• Vehicle speed
• To what extent the accelerator pedal was depressed
• The transmission shift position
• Whether the driver and front passenger wore seat belts or not
• Driver’s seat position
• SRS airbag deployment data
• SRS airbag system diagnostic data
• Front passenger’s occupant classification
The information above is intended to be used for the purpose of improving vehicle
safety performance. Unlike general data recorders, the EDR does not record sound
data such as conversation between passengers.
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IS350/250_U
24
CAUTION
■General precautions while driving
Driving under the influence: Never drive your vehicle when under the influence of
alcohol or drugs that have impaired your ability to operate your vehicle. Alcohol
and certain drugs delay reaction time, impair judgment and reduce coordination,
which could lead to an accident that could result in death or serious injury.
Defensive driving: Always drive defensively. Anticipate mistakes that other drivers
or pedestrians might make and be ready to avoid accidents.
Driver distraction: Always give your full attention to driving. Anything that distracts
the driver, such as adjusting controls, talking on a cellular phone or reading can
result in a collision with resulting death or serious injury to you, your occupants or
others.
■General precaution regarding children’s safety
Never leave children unattended in the vehicle, and never allow children to have or
use the key.
Children may be able to start the vehicle or shift the vehicle into neutral. There is
also a danger that children may injure themselves by playing with the cigarette
lighter, the windows, the moon roof, or other features of the vehicle. In addition, heat
build-up or extremely cold temperatures inside the vehicle can be fatal to children.
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41
1-2. Opening, closing and locking the doors and trunk
1
Before driving
IS350/250_U
■When the vehicle is not driven for extended periods
To prevent theft of the vehicle, do not leave the electronic key within 6 ft. (2 m) of
the vehicle.
■Security feature
If a door is not opened within approximately 60 seconds after the vehicle is
unlocked, the anti-theft system automatically locks the vehicle again.
■Alarms and warning indicators
A combination of exterior and interior alarms as well as warnings displayed on the
multi-information display is used to prevent theft of the vehicle and unforeseeable
accidents resulting from erroneous operation. Take appropriate measures in
response to any warning indications on the multi-information display. ( →P. 4 8 1 )
The following table describes circumstances and correction procedures when only
alarms are sounded.
AlarmSituationCorrection procedure
Exterior alarm
sounds once for 2
seconds
Tried to lock the doors using
the entry function while the
electronic key is still inside
the passenger compartmentRetrieve the electronic
key from the passenger
compartment and lock
the doors again.
Closed the trunk while the
electronic key is still inside
and all doors are lockedRetrieve the electronic
key from the trunk and
close the trunk lid.
Exterior alarm
sounds once for 60
seconds
Tried to exit the vehicle with
the electronic key and lock
the doors without first turning
the “ENGINE START STOP”
switch OFFTu r n t h e “ E N G I N E
START STOP” switch
OFF and lock the doors
again.
Exterior alarm
sounds once for 10
secondsTried to lock the vehicle using
the entry function while a
door is openClose all of the doors
and lock the doors
again.
Interior alarm
sounds continu-
ously
*
Tried to open the door and
exit the vehicle without shift-
ing the shift lever to P
Shift the shift lever to P.
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49
1-2. Opening, closing and locking the doors and trunk
1
Before driving
IS350/250_U
Locking the front doors from the outside without a keyThe door cannot be locked if the “ENGINE START STOP” switch is in
ACCESSORY or IGNITION ON mode, or the electronic key is left
inside the vehicle.
Depending on the position of the electronic key, the key may not be detected
correctly and the door may be locked.
Rear door child-protector lock
The door cannot be opened from
inside the vehicle when the locks
are set.
These locks can be set to prevent
children from opening the rear
doors. Push down on each rear
door switch to lock both rear
doors.
Automatic door locking and unlocking systems
The following functions can be set or cancelled:
*: Vehicles with an automatic transmission only
FunctionOperation
Shift position linked door
locking function
*Shifting the shift lever out of P locks all doors.
Shift position linked door
unlocking function
*Shifting the shift lever to P unlocks all doors.
Speed linked door locking
functionAll doors are locked when the vehicle speed is
approximately 12 mph (20 km/h) or higher.
Driver's door linked door
unlocking functionAll doors are unlocked when the driver's door is
opened within approximately 45 seconds after
turning the “ENGINE START STOP” switch OFF.