2015 Lexus IS250 engine

25
For safety and security1
IS350/250_U (OM53C50U)
1-1. For safe useBefore driving................................. 26
For safety drive............................... 28
Seat belts ..........................................30
SRS airbags ..................................... 36
Front passenger occupant classification system...................47
Safety information for children .......................................... 53
Child restraint systems ............... 54
Installing child restraints.............58
Exhaust gas precautions ............ 68
1-2. Theft deterrent system Engine immobilizer system ....... 69
Alarm ................................................... 71
Theft prevention labels ............... 73

271-1. For safe use
1
For safety and security
IS350/250_U (OM53C50U)
CAUTION
Observe the following precautions.
Failure to do so may cause the driver’s floor mat to slip, possibly interfering with the ped-
als while driving. An unexpectedly high spee d may result or it may become difficult to
stop the vehicle, leading to an accident, or leading to death or a serious injury.
■When installing the driver’s floor mat
●Do not use floor mats designed for other models or different model year vehicles,
even if they are Lexus Genuine floor mats.
●Only use floor mats designed for the driver’s seat.
●Always install the floor mat securely using the retaining hooks (clips) provided.
●Do not use two or more floor mats on top of each other.
●Do not place the floor mat bottom-side up or upside-down.
■Before driving
●Check that the floor mat is securely fixed in
the correct place with all the provided retain-
ing hooks (clips). Be especially careful to per-
form this check after cleaning the floor.
●With the engine stopped and the shift lever in
P, fully depress each pedal to the floor to
make sure it does not interfere with the floor
mat.

681-1. For safe use
IS350/250_U (OM53C50U)
Exhaust gas precautions
Harmful substance to the human body is included in exhaust gases if inhaled.
CAUTION
Exhaust gases include harmful carbon monoxide (CO), which is colorless and odorless.
Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to an accident
caused by light-headedness, or may lead to death or a serious health hazard.
■Important points while driving
●Keep the trunk lid closed.
●If you smell exhaust gases in the vehicle even when the trunk lid is closed, open the
windows and have the vehicle inspected at your Lexus dealer as soon as possible.
■When parking
●If the vehicle is in a poorly ventilated area or a closed area, such as a garage, stop the
engine.
●Do not leave the vehicle with the engine on for a long time.
If such a situation cannot be avoided, park the vehicle in an open space and ensure
that exhaust fumes do not enter the vehicle interior.
●Do not leave the engine running in an area with snow build-up, or where it is snowing.
If snowbanks build up around the vehicle wh ile the engine is running, exhaust gases
may collect and enter the vehicle.
■Exhaust pipe
The exhaust system needs to be checked period ically. If there is a hole or crack caused
by corrosion, damage to a joint or abnormal exhaust noise, be sure to have the vehicle
inspected and repaired by your Lexus dealer.

69
1
For safety and security
IS350/250_U (OM53C50U)1-2. Theft deterrent system
The indicator light flashes after the
engine switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the engine switch has been turned to
ACCESSORY or IGNITION ON
mode to indicate that the system has
been canceled.
■System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
■Conditions that may cause
the system to malfunction
●If the grip portion of the key is in contact with a metallic object
●If the key is in close proximity to or touching a key registered to the security system (key
with a built-in transponder chip) of another vehicle
Engine immobilizer system
The vehicle’s keys have built-in transponder chips that prevent the engine
from starting if a key has not been previously registered in the vehicle’s on-
board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
This system is designed to help prev ent vehicle theft but does not guarantee
absolute security against all vehicle thefts.

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.

711-2. Theft deterrent system
1
For safety and security
IS350/250_U (OM53C50U)
The alarm uses light and sound to give an alert when an intrusion is detected.
The alarm is triggered in the following situations when the alarm is set:
●A locked door or trunk is unlocked or opened in any way other than using the
entry function, wireless remote control or mechanical key. (The doors will lock
again automatically.)
●The hood is opened.
Close the doors, trunk and hood, and
lock all the doors. The system will be set
automatically after 30 seconds.
The indicator light changes from being
on to flashing when the system is set.
Do one of the following to deactivate or stop the alarms:
●Unlock the doors or open the trunk.
●Turn the engine switch to ACCESSORY or IGNITION ON mode, or start
the engine. (The alarm will be deactivated or stopped after a few seconds.)
Alarm
The alarm
Setting the alarm system
Deactivating or stopping the alarm

782. Instrument cluster
IS350/250_U (OM53C50U)
*1: These lights turn on when the engine switch is turned to IGNITION ON mode to indicate that a system check is being performed. They will turn off after the engine is
on, or after a few seconds. There may be a ma lfunction in a system if the lights do not
come on, or turn off. Have the vehicle inspected by your Lexus dealer.
*2: The light flashes to indicate a malfunction.
The indicators inform the driver of the operating state of the vehicle’s various sys-
tems.
Indicators
Turn signal indicator
( → P. 1 7 0 )
(if equipped)
LDA (Lane Departure
Alert) indicator ( →P. 2 0 8 )
(U.S.A.)
Headlight indicator
(→ P. 1 7 3 )

(if equipped)
Intuitive parking assist indi-
cator ( →P. 2 1 4 )
(Canada)
Tail light indicator
(→ P. 1 7 3 ) *1, 2 Slip indicator ( →P. 2 4 1 )
Headlight high beam indi-
cator ( →P. 1 74 )
*1VSC OFF indicator
(→ P. 2 4 2 )
(if equipped)
Automatic High Beam indi-
cator ( →P. 1 76 )*1, 3
(if equipped)
Pre-collision system warn-
ing light
(→ P. 2 4 7 )
(if equipped)
Fog light indicator
(→ P. 1 8 1 )*4, 5
(if equipped)
BSM (Blind Spot Monitor)
outside rear view mirror
indicators ( →P. 2 5 2 )
Cruise control indicator
( → P. 192, 196)
*6Security indicator
(→ P. 6 9 , 7 1 )
(if equipped)
Dynamic radar cruise con-
trol indicator ( →P. 1 9 6 )*7Low outside temperature
indicator ( →P. 8 1 )
Cruise control “SET” indica-
tor ( →P. 192, 196)
*1Eco Driving Indicator Light
(→ P. 9 0 )

792. Instrument cluster
2
Instrument cluster
IS350/250_U (OM53C50U)
*1: These lights turn on when the engine switch is turned to IGNITION ON mode toindicate that a system check is being performed. They will turn off after the engine is
on, or after a few seconds. There may be a ma lfunction in a system if the lights do not
come on, or turn off. Have the vehicle inspected by your Lexus dealer.
*2: The light flashes to indicate that the system is operating.
*3: The light comes on when the system is turned off. The light flashes faster than usual to indicate that the system is operating.
*4: In order to confirm operation, the BSM outside rear view mirror indicators illuminatein the following situations:
• When the engine switch is turned to IGNITION ON mode while the BSM main switch is set to ON.
• When the BSM main switch is set to ON while the engine switch is in IGNITION
ON mode.
If the system is functioning correctly, the BSM outside rear view mirror indicators will
turn off after a few seconds.
If the BSM outside rear view mirror indicators do not illuminate or do not turn off,
there may be a malfunction in the system.
If this occurs, have the vehicle inspected by your Lexus dealer.
*5: This light illuminates on the outside rear view mirrors.
*6: This light illuminates on the center panel.
*7: When the outside temperature is approximately 37 °F (3 °C) or lower, the indicator
will flash for approximately 10 seconds, then stay on.
*8:Except F SPORT models
*9:F SPORT models
*8Eco drive mode indicator
( → P. 2 3 7 )*9
(if equipped)
“SPORT S+” indicator
(→ P. 2 3 7 )
*9Eco drive mode indicator
(→ P. 2 3 7 )*8Snow mode indicator
(→ P. 1 6 5 )
*8“SPORT” indicator
(→ P. 2 3 7 )*9Snow mode indicator
(→ P. 1 6 5 )
*9
(if equipped)
“SPORT” indicator
(→ P. 2 3 7 )*1, 6“AIR BAG ON/OFF”
indicator ( →P. 4 7 )
*9
(if equipped)
“SPORT S” indicator
(→ P. 2 3 7 )