2012 Lexus IS250C warning light

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2-1. Driving proceduresDriving the vehicle ........................ 138
Engine (ignition) switch .............. 148
Automatic transmission.............. 153
Manual transmission .................... 160
Turn signal lever ............................ 162
Parking brake ................................. 163
Horn.................................................... 165
2-2. Instrument cluster Gauges and meters ..................... 166
Indicators and warning lights.................................................. 172
Multi-information display........... 176
2-3. Operating the lights and windshield wipers
Headlight switch ............................. 181
Fog light switch .............................. 185
Windshield wipers and washer............................................. 187
Headlight cleaner switch ........... 194 2-4. Using other driving systems
Cruise control ................................ 195
Dynamic radar cruise control............................................. 199
Intuitive parking assist ................. 213
Driving assist systems.................. 219
Hill-start assist control ............... 225
PCS (Pre-Collision System).... 227
2-5. Driving information Cargo and luggage ..................... 234
Vehicle load limits ........................ 237
Winter driving tips ....................... 238
Trailer towing ................................. 242
Dinghy towing (vehicles with an automatic
transmission) ............................... 243
Dinghy towing (vehicles with a manual
transmission) ............................... 244
2When driving

TABLE OF CONTENTSIndex
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5-1. Essential informationEmergency flashers.................... 486
If your vehicle needs to be towed ....................................... 487
If you think something is wrong ......................................... 493
Fuel pump shut off system ........ 494
5-2. Steps to take in an emergency If a warning light turns on or a warning buzzer
sounds... ........................................ 495
If a warning message is displayed ...................................... 504
If you have a flat tire (vehicles with standard
tires) ................................................. 518
If you have a flat tire (vehicles with run-flat
tires) ................................................ 527
If the engine will not start .......... 529
If the shift lever cannot be shifted from P......................... 531
If you lose your keys .................... 532
If the electronic key does not operate properly .............. 533
If the vehicle battery is discharged .................................. 538
If your vehicle overheats ........... 542 If the vehicle becomes
stuck................................................ 545
If the retractable hardtop does not close............................. 547
If your vehicle has to be stopped in an emergency ...... 557
6-1. Specifications Maintenance data (fuel, oil level, etc.).................... 560
Fuel information ............................ 578
Tire information............................ 582
6-2. Customization Customizable features.............. 595
6-3. Initialization Items to initialize .......................... 600
Reporting safety defects for U.S. owners........................... 602
Seat belt instructions for Canadian owners
(in French) ................................... 603
SRS airbag instructions for Canadian owners
(in French) ................................... 606
5When trouble arises
6Vehicle specifications
7For owners

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1-3. Adjustable components (seats, mirrors, steering wheel)
CAUTION
Observe the following precautions to reduce the risk of injury in the event of sudden
braking, sudden swerving or an accident.
Failing to do so may cause death or severe injury.
■Wearing a seat belt
●Ensure that all passengers wear a seat belt.
●Always wear a seat belt properly.
●Each seat belt should be used by one person only. Do not use a seat belt for more
than one person at once, including children.
●Lexus recommends that children be seated in the rear seat and always use a seat
belt and/or an appropriate child restraint system.
●Do not recline the seat any more than necessary to achieve a proper seating
position. The seat belt is most effective when the occupants are sitting up straight
and well back in the seats.
●Do not wear the shoulder belt under your arm.
●Always wear your seat belt low and snug across your hips.
■When children are in the vehicle
Do not allow children to play with the seat belt. If the seat belt becomes twisted
around a child’s neck, it may lead to choking or other serious injuries that could
result in death.
If this occurs and the buckle cannot be un fastened, scissors should be used to cut
the belt.
■Seat belt pretensioners
●Do not place anything, such as a cushion, on the front passenger’s seat. Doing so
will disperse the passenger’s weight, wh ich prevents the sensor from detecting
the passenger’s weight properly. As a resu lt, the seat belt pretensioner for the
front passenger’s seat may not activate in the event of a collision.
●If the pretensioner has activated, the SRS warning light will come on. In that case,
the seat belt cannot be used again and must be replaced at your Lexus dealer.
■When using the seat belt guide
Always make sure that the belt is not twisted, and runs freely through the guide.
■Before fastening the rear seat belt
Release the seat belt holder.

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1-7. Safety information
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Before driving
Airbag system componentsYour vehicle is equipped with AD VANCED AIRBAGS designed based
on US motor vehicle sa fety standards (FMVSS208). The airbag system
controls airbag deployment power for the driver and front passenger. The
driver airbag system consists of the driver seat’s position sensor etc. The
front passenger’s airbag system con sists of the front passenger occupant
classification sensor etc.
The main SRS airbag system componen ts are shown above. The SRS air-
bag system is controlled by the airb ag sensor assembly. The airbag sen-
sor assembly consists of a safing sensor and an airbag sensor.
Knee airbags
Front passenger airbag
“AIR BAG ON” and “AIR BAG
OFF” indicator lights
Side airbags
Side airbag sensors
SRS warning light
Driver airbag
Driver's seat belt buckle switch
Driver's seat position sensor
Front passenger’s seat belt
buckle switch
Airbag sensor assembly
Occupant detection system
(ECU and sensors)
Front airbag sensors

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1-7. Safety information
1
Before driving
■SRS warning light
This warning light system monitors the airbag sensor assembly, front airbag sensors,
side airbag sensor assemblies , driver's seat position sensor, driver's seat belt buckle
switch, seat belt pretensioner assemblies, inflators, interconnecting wiring and
power sources. ( P. 4 9 6 )
■If the SRS airbags deploy (inflate)
●Bruising and slight abrasions may result from contact with a deploying (inflating)
SRS airbag.
●A loud noise and white powder will be emitted.
●Parts of the airbag module (steering wheel , airbag cover and inflator) as well as
the front seats may be hot for several minu tes. The airbag itself may also be hot.
●The windshield may crack.
●For Safety Connect subscribers, if the SRS airbags deploy or in the event of a
severe rear-end collision, the system is designed to send an emergency call to
the response center, notifying them of the vehicle’s location (without needing to
push the “SOS” button) and an agent will attempt to speak with the occupants
to ascertain the level of emergency and assistance required. If the occupants
are unable to communicate, the agent automatically treats the call as an emer-
gency and helps to dispatch the necessary emergency services. ( P. 3 9 4 )
■SRS airbag deployment conditions (SRS front airbags)
●The SRS front airbags will deploy in the event of an impact that exceeds the
set threshold level (the level of force corresponding to an approximately 12 -
18 mph [20 - 30 km/h] frontal collision with a fixed wall that does not move or
deform).
However, this threshold velocity will be considerably higher if the vehicle strikes
an object, such as a parked vehicle or sign pole, which can move or deform on
impact, or if the vehicle is involved in an underride collision (e.g. a collision in
which the front of the vehicle “underrides”, or goes under, the bed of a truck, etc.).
●It is possible that in some collisions where the forward deceleration of the vehi-
cle is very close to the designed thresh old level, the SRS front airbags and the
seat belt pretensioners ma y not activate together.
●The SRS front passenger airbag will not activate if there is no passenger sitting
in the front passenger seat. However, the front passenger airbag may deploy if
luggage is put in the seat, or the seat belt is fastened, even if the seat is unoccu-
pied. ( P. 1 1 8 )

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1-7. Safety information
Front passenger occupant classification system
Your vehicle is equipped with a front passenger occupant classification sys-
tem. This system detects the conditions of the front passenger seat and
activates or deactivates the devices for front passenger.
SRS warning light
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light
Front passenger’s seat belt reminder light

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1-7. Safety information
1
Before driving
Condition and operation in the front passenger occupant classification system
■Adult*1
■Child *3 or child restraint system*4
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “A I R B A G
ON”
SRS warning light Off
Front passenger’s seat belt reminder light Flashing
*2
DevicesFront passenger airbag
Activated
Side airbag on the front
passenger seat
Front passenger knee airbag
Front passenger’s seat belt pretensioner
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “A I R B A G
OFF”
*5
SRS warning light Off
Front passenger’s seat belt reminder light Flashing
*2
DevicesFront passenger airbag
Deactivated
Side airbag on the front
passenger seat
Front passenger knee airbag
Front passenger’s seat belt pretensioner Activated

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1-7. Safety information
■Unoccupied
■ There is a malfunction in the system
*
1: The system judges a person of adult size as an adult. When a smaller adult sits in the front passenger seat, the system may recognize him/
her as a child depending on his/her physique and posture.
*
2: In the event the front passenger does not wear a seat belt.
*
3: When a larger child who has outgrow n a child restraint system sits in
the front passenger seat, the system may recognize him/her as an
adult depending on his/her physique or posture.
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lightsNot illuminated
SRS warning light Off
Front passenger’s seat belt reminder light
Devices Front passenger airbag
Deactivated
Side airbag on the front
passenger seat
Front passenger knee airbag
Front passenger’s seat belt pretensioner
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “A I R B A G
OFF”
SRS warning light On
Front passenger’s seat belt reminder light Off
Devices Front passenger airbag
Deactivated
Side airbag on the front
passenger seat
Front passenger knee airbag
Front passenger’s seat belt pretensioner Activated