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651-1. For safe use
1
For safety and security
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
WARNING
■When installing a booster seat 
To prevent the belt from going into ALR lock mode, do not fully extend the shoulder
belt. ALR mode causes the belt to tighten only. This could cause injury or discomfort to
the child. (→P. 32)
■When installing a child restraint system
Follow the directions given in the child rest raint system installation manual and fix the
child restraint system securely in place.
If the child restraint system is  not correctly fixed in place, the child or other passengers
may be seriously injured or ev en killed in the event of a sudden braking or an accident.
●If the driver’s seat interferes with the child
restraint system and prevents it from being
attached correctly, attach the child restraint
system to the right-hand rear seat.
●Adjust the front passenger seat so that it does
not interfere with the child restraint system.
●Only put a forward-faci ng child restraint sys-
tem on the front seat when unavoidable.
When installing a forward-facing child
restraint system on the front passenger seat,
move the seat as far back as possible even if
the “AIR BAG OFF” indicator light is illumi-
nated. Failure to do so may result in death or
serious injury if the airbags deploy (inflate). 
         
        
        
     
        
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671-1. For safe use
1
For safety and security
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Exhaust gas precautions
Harmful substance to the human body is included in exhaust gases if inhaled.
WARNING
Exhaust gases include harmful carbon monoxi de (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  while the engine is running, exhaust gases
may collect and enter the vehicle.
■Exhaust pipe
The exhaust system needs to be checked periodically. 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.  
         
        
        
     
        
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68
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
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 preven t vehicle theft but does not guarantee
absolute security agai nst all vehicle thefts. 
         
        
        
     
        
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711-2. Theft deterrent system
1
For safety and security
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
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 is unlocked or opened  in any way other than using the entry
function, wireless remote control or mech anical key. (The doors will lock again
automatically.)
●The trunk is opened in any way other th an using the entry function or wireless
remote control.
●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 de activate or stop the alarm:
●Unlock the doors.
●Open the trunk using the entry func tion or wireless remote control.
●Turn the engine switch to ACCESSOR Y or IGNITION ON mode, or start
the engine. (The alarm will be deactivat ed or stopped after a few seconds.)
Alarm
The alarm
Setting the alarm system
Deactivating or stopping the alarm 
         
        
        
     
        
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75
Instrument cluster2
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
2. Instrument cluster
Warning lights and indicators ....................................... 76
Gauges and meters ...................... 81
Multi-information display .......... 86
Fuel consumption  information ................................. 103 
         
        
        
     
        
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76
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
2. Instrument cluster
Except F SPORT models
F SPORT models
The units used on the meters and some indi
cators 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. 
         
        
        
     
        
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772. Instrument cluster
2
Instrument cluster
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Warning lights inform the driv er of malfunctions in the indicated vehicle systems.
Warning lights
*1
(U.S.A.)
Brake system warning light
(→ P. 522)*1Electric power steering sys-
tem warning light
(→ P. 523)
*1
(Canada)
Brake system warning light
(→ P. 522) LDA (Lane Departure
 Alert) indicator (
→P. 523)
*1
(if equipped)
Charging system warning
light ( →P. 522)*1PCS warning light 
(→ P. 523)
*1
(U.S.A.)
Malfunction indicator lamp
(→ P. 522)*1
Slip indicator ( →P. 523)
*1
(Canada)
Malfunction indicator lamp
(→ P. 522)*1, 2
(if equipped)
“AFS OFF” indicator 
(→ P. 524)
*1SRS warning light 
(→ P. 522)Open door warning light 
(→ P. 524)
*1
(U.S.A.)
ABS warning light 
(→ P. 522)Low fuel level warning light
(→ P. 524)
*1
(Canada)
ABS warning light 
(→ P. 522)Driver’s and front passen-
ger’s seat belt reminder light
(→ P. 524)
(U.S.A.)
Parking brake warning light 
(→ P. 523)*3Rear passengers’ seat
belt reminder lights
(→ P. 524)
(Canada)
Parking brake warning light
(→ P. 523)*1Master warning light 
(→ P. 524) 
         
        
        
     
        
        Page 78 of 656

782. Instrument cluster
IS350 AWD/IS350/IS300  AWD/IS300_U(OM53E34U)
*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
started, or after a few seconds. There may be  a malfunction in a system if a light does
not come on, or turn off. Have the ve hicle inspected by your Lexus dealer.
*2: The light flashes to indicate a malfunction.
*3: This light illuminates on the center panel.
The indicators inform the driver of the op erating state of the vehicle’s various sys-
tems. 
*1Tire pressure warning light 
( → P. 524)
Indicators
Turn signal indicator 
(→ P. 190) LDA (Lane Departure
Alert) indicator (
→P. 232)
(U.S.A.)
Headlight indicator
(→ P. 194) LDA (Lane Departure
Alert) indicator (
→P. 232)
(Canada)
Tail light indicator
(→ P. 194) *2LDA (Lane Departure
Alert) indicator ( →P. 232)
Headlight high beam indi-
cator (→ P. 195)
(if equipped)
Intuitive parkin g assist indi-
cator ( →P. 251)
*1Automatic High Beam indi-
cator (→ P. 198)*1, 2
Slip indicator ( →P. 293)
Cruise control indicator 
( → P. 239)
*1VSC OFF indicator 
(→ P. 294)
Dynamic radar cruise con-
trol indicator ( →P. 239)
*1, 3PCS warning light 
(→ P. 225) 
Cruise control “SET” indica-
tor (→ P. 239)
*1
(if equipped)
“AFS OFF” indicator 
(→ P. 195)