2014 Lexus IS250 Drive

5109-1. Specifications
IS350/250_U (OM53758U)
■Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehicle has a fuel tank opening that only accom-
modates the special nozzle on unleaded fuel pumps.
■Gasoline quality
In very few cases, driveability problems may be caused by the brand of gasoline you are
using. If driveability problems persist, try changing the brand of gasoline. If this does not
correct the problem, consult your Lexus dealer.
■Gasoline quality standards
●Automotive manufacturers in the U.S.A., Eu rope and Japan have developed a specifi-
cation for fuel quality called the World-Wi de Fuel Charter (WWFC), which is expected
to be applied worldwide.
●The WWFC consists of four cat egories that are based on required emission levels. In
the U.S., category 4 has been adopted.
●The WWFC improves air quality by lowering emissions in vehicle fleets, and improves
customer satisfaction through better performance.
Fuel information
You must only use unleaded gasoline in your vehicle.
IS250
Select premium unleaded gasoline with an octane rating of 91 (Research
Octane Number 96) or higher required for optimum engine performance. If
91 octane cannot be obtained, you may use unleaded gasoline with an octane
rating as low as 87 (Research Octane Number 91). Use of unleaded gasoline
with an octane rating lower than 91 ma y result in engine knocking. Persistent
knocking can lead to engine damage and should be corrected by refueling
with higher octane unleaded gasoline.
IS350
Select premium unleaded gasoline with an octane rating of 91 (Research
Octane Number 96) or higher required for optimum engine performance. If
91 octane cannot be obtained, you may use unleaded gasoline with an octane
rating as low as 87 (Research Octane Number 91). Use of unleaded gasoline
with an octane rating lower than 91 may result in engine knocking and signifi-
cantly reduced performance. Persistent knocking can lead to engine damage
and should be corrected by refueling with higher octane unleaded gasoline.
At minimum, the gasoline you use should meet the specifications of ASTM
D4814 in the U.S.A. and CGSB3.5-M93 in Canada.

5129-1. Specifications
IS350/250_U (OM53758U)
NOTICE
■Notice on fuel quality
●Do not use improper fuels. If improper fuels are used, the engine will be damaged.
●Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way catalytic converters
causing the emission control system to malfunction.
●Do not use gasohol other than the type previously stated.
Other gasohol may cause fuel system da mage or vehicle performance problems.
●Using unleaded gasoline with an octane number or rating lower than the level previ-
ously stated will cause persistent heavy knocking.
At worst, this will lead to engine damage.
■Fuel-related poor driveability
If poor driveability is encounte red after using a different type of fuel (poor hot starting,
vaporization, engine knocking, etc.), disc ontinue the use of that type of fuel.
■When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle’s paint.

5209-1. Specifications
IS350/250_U (OM53758U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire 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 un der that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in excess of those standard items
which may be replaced) of automatic transmission,
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)
Curb weight
The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1* that follows
Occupant distributionDistribution of occupants in a vehicle as specified in the
third column of Table 1
* below
Production options weight
The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they replace, not previously con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated

5269-2. Customization
IS350/250_U (OM53758U)
Some function settings are changed simultaneously with other functions being
customized. Contact your Lexus dealer for further details. Settings that can be changed using the Remote Touch or Lexus Display Audio
controller
Settings that can be changed using the meter control switches
Settings that can be changed by your Lexus dealer
Definition of symbols: O = Available, — = Not available
■Gauges, meters and multi-information display ( P. 76, 81, 86)
Customizable features
1
2
3
Function*1Default settingCustomized setting
LanguageEnglishFrenchOO—Spanish
Units*2miles (MPG US)
km (km/L)
—O—km (L/100 km)
miles (MPG Impe-
rial)
Maintenance system initial-
izationOFFON—O—
Eco Driving Indicator LightON (Self-lighting)OFF—O—
switch settings *3Drive information 1Desired status screen*4—O—
Drive information 1
Current fuel econ-
omy
*5—O—Average fuel econ-omy (after reset)
Drive information 2
Distance (range)
*5—O—Average speed (after reset)
Po p - u p d i s p l a yONOFF—O—
Accent color*3BlueRedOO—
Needle*6BlueRed—O—White
Speed indicator*6OFF30 to 100 mph (50
to 160 km/h)—O—
123

5279-2. Customization
9
Vehicle specifications
IS350/250_U (OM53758U)
*1: For details about each function: P. 8 8
*2: The default setting varies according to country.
*3:Except F SPORT models
*4: Some status screens cannot be registered (indicated on multi-information display).
*5: 2 of the following items: current fuel consumption, average fuel economy (after reset),
average fuel economy (after refuel), average fuel economy (after start), average vehi-
cle speed (after reset), average vehicle speed (after start), distance (driving range),
distance (after start), elapsed time (after reset), elapsed time (after start), blank.
*6:F SPORT models
■Door lock ( P. 103, 109, 488)
REV indicator*65000 rpm
2000 to 6600
rpm
—O—
OFF
REV peak*6ONOFF—O—
Function*1Default settingCustomized setting123
FunctionDefault settingCustomized setting
Unlocking using a mechani-
cal key
Driver’s door
unlocked in one step, all doors
unlocked in two
steps
All doors unlocked in one step——O
Automatic door lock
Shifting the shift
lever to position other than P
Off
O—OVehicle speed is
approximately 12
mph (20 km/h) or
higher
Automatic door unlockShifting the shift lever to POff
O—ODriver’s door is opened
Locking/unlocking of the
trunk when all doors are
locked/unlockedOnOff——O
123

5289-2. Customization
IS350/250_U (OM53758U)
■Smart access system with push-button start and wireless remote control
(  P. 103, 109)
■Smart access system with push-button start ( P. 103, 109, 114)
■Wireless remote control ( P. 98, 103, 109)
FunctionDefault settingCustomized setting
Operation buzzer volume5OffO—O1 to 7
Operation signal (Emer-
gency flashers)OnOffO—O
Time elapsed before auto-
matic door lock function is
activated if door is not
opened after being
unlocked
60 seconds
Off
O—O30 seconds
120 seconds
Open door warning buzzerOnOff——O
123
FunctionDefault settingCustomized setting
Smart access system with
push-button startOnOff——O
Smart door unlockingDriver’s doorAll the doorsO—O
Number of consecutive
door lock operations2 timesAs many as desired——O
123
FunctionDefault settingCustomized setting
Wireless remote controlOnOff——O
Unlocking operation
Driver’s door
unlocked in one step, all doors
unlocked in two
steps
All doors unlocked in one stepO—O
Trunk unlocking operationPress and hold (short)
One short press
——O
Push twice
Press and hold (long)
Off
Alarm (panic mode)OnOff——O
123

5299-2. Customization
9
Vehicle specifications
IS350/250_U (OM53758U)
■Driving position memory* ( P. 1 2 3 )
*: If equipped
■Powe r w i n d ow s ( P. 1 3 7 )
■Moon roof* ( P. 1 4 0 )
*: If equipped
FunctionDefault settingCustomized setting
Driver’s seat movement
when exiting the vehicleStandardOffO—OPa r t i a l
Selecting the door linking
driving position memory
with door unlock operationDriver’s doorAll doors——O
123
FunctionDefault settingCustomized setting
Mechanical key linked oper-
ationOffOn——O
Wireless remote control
linked operationOffOn (Open only)——O
123
FunctionDefault settingCustomized setting
Mechanical key linked oper-
ationOffOn——O
Linked operation of compo-
nents when mechanical key
is used (open only)
Slide onlyTilt only——O
Wireless remote control
linked operationOffOn (Open only)——O
Linked operation of compo-
nents when wireless remote
control is used
Slide onlyTilt only——O
123

549What to do if... (Troubleshooting)
IS350/250_U (OM53758U)
●Did you press the engine switch while firmly depressing the brake pedal?
(P. 1 5 9 )
●Is the shift lever in P? ( P. 161)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 1 1 4 )
●Is the steering wheel unlocked? ( P. 161)
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (P. 4 8 9 )
●Is the battery discharged? ( P. 4 9 0 )
●Is the engine switch in IGNITION ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
engine switch in IGNITION ON mode. ( P. 4 8 7 )
●It is locked automatically to prevent theft of the vehicle. ( P. 1 6 1 )
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( P. 1 3 7 )
●The auto power off function will be oper ated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. ( P. 161)
If you think something is wrong
The engine does not start
The shift lever cannot be shifted from P even if you depress the brake
pedal
The steering wheel cannot be turned after the engine is stopped
The windows do not open or close by operating the power window
switches
The engine switch is turned off automatically