warning Lexus IS250 2015 User Guide

471-1. For safe use
1
For safety and security
IS350/250_U (OM53C50U)
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 acti-
vates or deactivates the devices for the front passenger.
Seat belt reminder light
SRS warning light
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light1
2
3
4

481-1. For safe use
IS350/250_U (OM53C50U)
■Adult*1
■Child*4
Condition and operation in the front passenger occupant classification
system
Indicator/
warning light
“A I R B A G O N ” a n d “A I R B A G O F F ” indicator lights“A I R B A G O N ”
SRS warning lightOff
Seat belt reminder lightOff*2 or flashing*3
Devices
Front passenger airbag
Activated
Side airbag
on the front passenger seat
Curtain shield airbag
in the front passenger side
Front passenger knee airbag
Front passenger’s seat belt pretensioner
Indicator/
warning light
“A I R B A G O N ” a n d “A I R B A G O F F ” indicator lights“A I R B A G O F F ” o r “A I R B A G O N ”*4
SRS warning lightOff
Seat belt reminder lightOff*2 or
flashing
*3
Devices
Front passenger airbagDeactivated or activated*4
Side airbag
on the front passenger seat
ActivatedCurtain shield airbag
in the front passenger side
Front passenger knee airbagDeactivated or activated*4
Front passenger’s seat belt pretensionerActivated

491-1. For safe use
1
For safety and security
IS350/250_U (OM53C50U)
■Child restraint system with infant*5
■Unoccupied
Indicator/
warning light
“A I R B A G O N ” a n d “A I R B A G O F F ” indicator lights“A I R B A G O F F ”*6
SRS warning lightOff
Seat belt reminder lightOff*2 or
flashing
*3
Devices
Front passenger airbagDeactivated
Side airbag
on the front passenger seat
ActivatedCurtain shield airbag
in the front passenger side
Front passenger knee airbagDeactivated
Front passenger’s seat belt pretensionerActivated
Indicator/
warning light
“A I R B A G O N ” a n d “A I R B A G O F F ” indicator lights“A I R B A G O F F ”
SRS warning light
Off
Seat belt reminder light
Devices
Front passenger airbagDeactivated
Side airbag
on the front passenger seat
ActivatedCurtain shield airbag
in the front passenger side
Front passenger knee airbagDeactivated
Front passenger’s seat belt pretensionerActivated

501-1. For safe use
IS350/250_U (OM53C50U)
■There is a malfunction in the system
*1: The system judges a person of adult size as an adult. When a smaller adult sits inthe front passenger seat, the system may not recognize him/her as an adult
depending on his/her physique and posture.
*2: In the event the front passenger is wearing a seat belt.
*3: In the event the front passenger does not wear a seat belt
*4: For some children, child in seat, child in booster seat or child in convertible seat,
the system may not recognize him/her as a child. Factors which may affect this can
be the physique or posture.
*5: Never install a rear-facing child restraint system on the front passenger seat. A for-
ward-facing child restraint system should only be installed on the front passenger
seat when it is unavoidable. ( →P. 5 4 )
*6: In case the indicator light is not illuminated, consult this manual on how to install the
child restraint system properly. ( →P. 5 8 )
Indicator/
warning light
“A I R B A G O N ” a n d “A I R B A G O F F ” indicator lights“A I R B A G O F F ”
SRS warning light
On
Seat belt reminder light
Devices
Front passenger airbagDeactivated
Side airbag
on the front passenger seat
ActivatedCurtain shield airbag
in the front passenger side
Front passenger knee airbagDeactivated
Front passenger’s seat belt pretensionerActivated

521-1. For safe use
IS350/250_U (OM53C50U)
CAUTION
■Front passenger occupant classification system precautions
●Do not recline the front passenger seatback so far that it touches the rear seat. This
may cause the “AIR BAG OFF” indicator light to be illuminated, which indicates that
the SRS airbags for the front passenger will not deploy in the event of a severe acci-
dent. If the seatback touches the rear seat, return the seatback to a position where it
does not touch the rear seat. Keep the front passenger seatback as upright as possi-
ble when the vehicle is moving. Reclining the seatback excessively may lessen the
effectiveness of the seat belt system.
●If an adult sits in the front passenger seat , the “AIR BAG ON” indicator light is illumi-
nated. If the “AIR BAG OFF” indicator is illuminated, ask the passenger to sit up
straight, well back in the seat, feet on the floor, and with the seat belt worn correctly. If
the “AIR BAG OFF” indicator still remains illuminated, either ask the passenger to
move to the rear seat, or if that is not possible, move the front passenger seat fully
rearward.
●When it is unavoidable to in stall a forward-facing child restraint system on the front
passenger seat, install the ch ild restraint system on the front passenger seat in the
proper order. ( →P. 5 8 )
●Do not modify or remove the front seats.
●Do not kick the front passenger seat or subject it to severe impact. Otherwise, the
SRS warning light may come on to indicat e a malfunction of the front passenger
occupant classification system. In this case, contact your Lexus dealer immediately.
●Child restraint systems installed on the rear seat should not contact the front seat-
backs.
●Do not use a seat accessory, such as a cushion and seat cover, that covers the seat
cushion surface.
●Do not modify or replace the upholstery of the front seat.
●Do not place anything between the console box and front passenger seat. Other-
wise, the system may not detect the front passenger properly, leading to improper
operation of the airbags.
●Adjust the front passenger seat so that the head restraint does not touch the ceiling. If
the head restraint is left in contact with th e ceiling, the system may not detect the front
passenger properly, leading to improper operation of the airbags.

701-2. Theft deterrent system
IS350/250_U (OM53C50U)
■Certifications for the engine immobilizer system
XFor vehicles sold in the U.S.A.
FCC ID: NI4TMIMB-3
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for compli-
ance could void the user's authority to operate the equipment.
XFor vehicles sold in Canada
This device complies with Industry Canada licence-exempt RSS standard(s). Operation
is subject to the following two conditions: (1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause
undesired operation of the device.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper operation of
the system cannot be guaranteed.

75
Instrument cluster2
IS350/250_U (OM53C50U)
2. Instrument clusterWarning lights and indicators ........................................76
Gauges and meters ...................... 81
Multi-information display .......... 86
Fuel consumption information ................................... 92

76
IS350/250_U (OM53C50U)2. Instrument cluster
XExcept F SPORT models
XF SPORT models
The units used on the meters and some indicators may differ depending on the target
region.
Warning lights and indicators
The warning lights and indicators on th
e instrument cluster and center panel
inform the driver of the status of the vehicle’s various systems.
For the purpose of explanation, the following illustrations display all warning
lights and indicators illuminated.

772. Instrument cluster
2
Instrument cluster
IS350/250_U (OM53C50U)
Warning lights inform the driver of malfunctions in the indicated vehicle systems.
Warning lights
*1
(U.S.A.)
Brake system warning light
(→ P. 466)
*1, 2
(if equipped)
Pre-collision system warn-
ing light
(→ P. 4 6 7 )
*1
(Canada)
Brake system warning light
(→ P. 466)*1
Slip indicator ( →P. 4 6 7 )
*1Charging system warning
light ( →P. 466)*1 Automatic headlight level-
ing system warning light
(→ P. 4 6 7 )
*1
(U.S.A.)
Malfunction indicator lamp
(→ P. 466)*1Open door warning light
(→ P. 4 6 7 )
*1
(Canada)
Malfunction indicator lamp
(→ P. 466)Low fuel level warning light
(→ P. 4 6 7 )
*1SRS warning light
(→ P. 466)Seat belt reminder light
(→ P. 4 6 7 )
*1
(U.S.A.)
ABS warning light
(→ P. 466)*1Master warning light
(→ P. 4 6 7 )
*1
(Canada)
ABS warning light
(→ P. 466)*1Tire pressure warning light
(→ P. 4 6 8 )
*1Electric power steering sys-
tem warning light
(→ P. 4 6 7 )

802. Instrument cluster
IS350/250_U (OM53C50U)
CAUTION
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning light not come on when
you start the engine, this could mean that these systems are not available to help pro-
tect you in an accident, which could result in death or serious injury. Have the vehicle
inspected by your Lexus dealer immediately if this occurs.