2012 Lexus IS250 Maintenance

460
4-3. Do-it-yourself maintenance
IS350/250_U

5
When trouble arises
479
5-2. Steps to take in an emergency
IS350/250_U
CAUTION
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold
and inflated to the inflation pressure recommended by the vehicle manufacturer on
the vehicle placard or tire inflation pressure label (tire and load information label).
(If your vehicle has tires of a different size than the size indicated on the vehicle
placard or tire inflation pressure label [tire and load information label], you should
determine the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire pressure
monitoring system (TPMS-tire pressure warning system) that illuminates a low tire
pressure telltale (tire pressure warning light) when one or more of your tires is sig-
nificantly under-inflated. Accordingly, when the low tire pressure telltale (tire pres-
sure warning light) illuminates, you should stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling
and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a substitute for
proper tire maintenance, and it is the driver's responsibility to maintain correct tire
pressure, even if under-inflation has not reached the level to trigger illumination of
the TPMS low tire pressure telltale (tire pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning system)
malfunction indicator to indicate when the system is not operating properly. The
TPMS (tire pressure warning system) malfunction indicator is combined with the
low tire pressure telltale (tire pressure warning light). When the system detects a
malfunction, the telltale will flash for approximately one minute and then remain
continuously illuminated. This sequence will continue upon subsequent vehicle
start-ups as long as the malfunction exists. When the malfunction indicator is illumi-
nated, the system may not be able to detect or signal low tire pressure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a variety of rea-
sons, including the installation of replacement or alternate tires or wheels on the
vehicle that prevent the TPMS (tire pressure warning system) from functioning
properly. Always check the TPMS (tire pressure warning system) malfunction tell-
tale after replacing one or more tires or wheels on your vehicle to ensure that the
replacement or alternate tires and wheels allow the TPMS (tire pressure warning
system) to continue to function properly.

486
5-2. Steps to take in an emergency
IS350/250_U
Indicates that engine oil
level is low.Check the level of engine
oil, and add if necessary.
(U.S.A. only)
Indicates that all mainte-
nance according to the
driven distance on the
maintenance schedule*
should be performed
soon.
If necessary, perform
maintenance.
Comes on approximately
4500 miles (7200 km)
after the maintenance
data has been reset.
(U.S.A. only)
Indicates that all mainte-
nance is required to cor-
respond to the driven
distance on the mainte-
nance schedule*.
Pe r f o r m t h e n e c e s s a r y
maintenance. Please reset
the maintenance data
after the maintenance is
performed (→P. 386)
Comes on approximately
5000 miles (8000 km)
after the maintenance
data has been reset.
(The indicator will not
work properly unless the
maintenance data has
been reset.)
Wa r n i n g m e s s a g eDetailsCorrection procedure

5
When trouble arises
487
5-2. Steps to take in an emergency
IS350/250_U
*: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supple-ment” for the maintenance interval applicable to your vehicle.
(If equipped)
Indicates that intuitive
parking assist is dirty or
covered with ice.
Clean the sensor.
Wa r n i n g m e s s a g eDetailsCorrection procedure

Vehicle specifications6
519
IS350/250_U
6-1. SpecificationsMaintenance 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

520
IS350/250_U
6-1. Specifications
Maintenance data (fuel, oil level, etc.)
Dimensions and weight
*1: Unladen vehicle
*2: Vehicle with 18-inch tires
*3: Vehicle with tires other than the above on rear wheels
Overall length180.3 in. (4580 mm)
Overall width70.9 in. (1800 mm)
Overall height *1
2WD
models56.1 in. (1425 mm)
AW D
models56.7 in. (1440 mm)
Wheelbase107.4 in. (2730 mm)
Tr e a d
Front60.4 in. (1535 mm)
Rear60.0 in. (1525 mm)*2
60.4 in. (1535 mm)*3
Vehicle capacity weight
(Occupants + luggage)825 lb. (375 kg)

559
6
Vehicle specifications
IS350/250_U
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Maintenance data
(U.S.A. only)After the maintenance is performedP. 3 8 6
Tire pressure warning
system
• When rotating the tires with differing front and rear tire inflation pressures.
• When changing the tire inflation pressure by changing traveling
speed.
• When changing the tire size.
P. 4 1 3
The following items must be initialized for normal system operation in cases
such as after the battery is reconnected, or maintenance is performed on
the vehicle.

576
IS350/250_U
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
2WDTw o W h e e l D r i v e
ABSAnti-lock Brake System
AI-SHIFTArtificial Intelligence Shift
ALRAutomatic Locking Retractor
AW DAll Wheel Drive
CRSChild Restraint System
DISPDisplay
ECTElectronic Controlled Transmission
ECUElectronic Control Unit
EDREvent data recorder
ELREmergency Locking Retractor
EPSElectric Power Steering
ETCSElectronic Throttle Control System
GAWRGross Axle Weight Rating
I/MEmission inspection and maintenance
LATCHLower Anchors and Tethers for Children
LEDLight Emitting Diode
MMTMethylcyclopentadienyl Manganese Tricarbonyl
M + SMud and Snow
MTBEMethyl Tertiary Butyl Ether
OBDOn Board Diagnostics
SRSSupplemental Restraint System
TINTire Identification Number
TPMSTire Pressure Warning System
TRACTr a c t i o n C o n t r o l