2015 Lexus IS250 Seat belt buzzer

5449-2. Customization
IS350/250_U (OM53C50U)
■Illumination ( →P. 3 6 8 )
■Seat belt reminder ( →P. 4 6 7 )
FunctionDefault settingCustomized setting
Ti m e e l a p s e d b e f o r e t h e
interior lights turn off15 seconds
Off
O—O7. 5 s e c o n d s
30 seconds
Operation after the engine
switch is turned offOnOff——O
Operation when the doors
are unlockedOnOff——O
Operation when you
approach the vehicle with
the electronic key on your
person
OnOff——O
Inside door handle lightsOnOff——O
Ti m e e l a p s e d b e f o r e t h e
outer foot lights turn off15 seconds
Off
O—O7. 5 s e c o n d s
30 seconds
Operation of the outer foot
lights when you approach
the vehicle with the elec-
tronic key on your person
OnOff——O
Operation of the outer foot
lights when the doors are
unlocked with the power
door lock switch
OnOff——O
123
FunctionDefault settingCustomized setting
Vehicle speed linked seat
belt reminder buzzerOnOff——O
123

562What to do if... (Troubleshooting)
IS350/250_U (OM53C50U)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? ( →P. 4 6 7 )
●The parking brake indicator is on
Is the parking brake released? ( →P. 1 7 2 )
Depending on the situation, other type s of warning buzzer may also sound.
( → P. 4 6 6 , 4 7 2 )

●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( →P. 7 1 )
To stop the alarm, turn the engine switch to IGNITION ON mode or start the
engine.
●Is the electronic key left inside th e vehicle or the moon roof opened?
Check the message on the multi-information display. ( →P. 4 7 2 )
●When a warning light turns on or a warning message is displayed, refer to
P. 466, 472. A warning buzzer sounds during driving
An alarm is activate
d and the horn sounds
A warning buzzer sounds wh en leaving the vehicle
A warning light turns on or a warning message is displayed

577Alphabetical index
IS350/250_U (OM53C50U)
Seat belt reminder light...................... 467
Seat belts..................................................... 30Adjusting the seat belt ..........................31
Automatic Locking Retractor......... 32
Child restraint system
installation................................................61
Cleaning and maintaining
the seat belt ...................................... 400
Emergency Locking
Retractor ................................................ 32
How to wear your seat belt .............30
How your child should wear the seat belt .......................................... 32
Pregnant women, proper seat belt use.......................................... 33
Reminder light and buzzer ........... 467
Seat belt extender................................. 32
Seat belt pretensioners ........................31
SRS warning light .............................. 466
Seat heaters ............................................ 367
Seat position memory...........................123
Seat ventilators ...................................... 367
Seating capacity......................................156 Seats, Front ............................................... 120
Adjustment..............................................120
Adjustment precautions...................120
Child seats/child restraint
system installation ............................. 58
Cleaning................................................. 399
Driving position memory................. 123
Head restraints .....................................128
Power easy access system ............. 123
Properly sitting in the seat ................ 28
Seat heaters .......................................... 367
Seat position memory ....................... 123
Seat ventilators.................................... 367
Seats, Rear ..................................................121
Fold down the seatback.....................121
Luggage security system.................. 110
Sensor Automatic headlight system .......... 174
Automatic High Beam system .... 180
Inside rear view mirror...................... 134
Intuitive parking assist........................ 214
LDA (Lane Departure Alert).......208
Radar sensor................ 203, 247, 254
Rain-sensing windshield
wipers.................................................... 186
Service reminder indicators ................ 76
S
*: For vehicles with a navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.

582Alphabetical index
IS350/250_U (OM53C50U)
Units .............................................................. 88
USB device ..................................304, 347Connecting ........................................... 274
USB audio ............................................ 304
USB photo ............................................ 347
USB port ...................................................274
Vanity lights Vanity lights .......................................... 377
Wattage ................................................... 521
Vanity mirrors .........................................377
Variable Gear Ratio Steering (VGRS) ................................................. 240
VDIM (Vehicle Dynamics
Integrated Management) ................241
Vehicle data recordings .......................... 9
Vehicle Dynamics Integrated Management (VDIM) .......................241
Vehicle identification number.......... 513
Vehicle Stability Control (VSC) ..................................................... 240
Ventilators (seat ventilators)............ 367
VGRS (Variable Gear Ratio Steering) ............................................... 240
Voice command system ....................350
VSC (Vehicle Stability Control) ............ 240 Warning buzzers
Brake system ....................................... 466
Downshifting ......................................... 168
Key reminder ....................................... 483
Open door ........................................... 467
Open moon roof ................................477
Open hood........................................... 474
Open trunk ........................................... 474
Open window ......................................477
Seat belt reminder............................. 467
Warning lights ........................................... 77
ABS .......................................................... 466
Automatic headlight leveling system .................................................. 467
Brake system ....................................... 466
Charging system ............................... 466
Electric power steering .................. 467
Low fuel level ....................................... 467
Malfunction indicator lamp...........466
Master warning light ........................ 467
Open door ........................................... 467
Pre-collision system ......................... 467
Seat belt reminder light .................. 467
Slip indicator ........................................ 467
SRS............................................................ 466
Tire pressure ........................................468
Warning messages............................... 472
Warning reflector storage belt .......376
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