engine Lexus IS250 2008 Audio/video System / LEXUS 2008 IS 350/250 QUICK GUIDE (OM60D81U) User Guide
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Entering and Exiting
Before Driving
When Driving
Rain and 
Night Driving
Driving Comfort
Opening and Closing
What to do if ...
Customizing
Yo u r  L e x u s
Electronic Key Alarm
The electronic key alarm uses an alarm and warning messages to indicate that the electronic 
key has been used improperly. Take appropriate measure in response to any warning mes-
sages that are displayed. In some cases, an alarm may sound without an accompanying 
warning message. If so, follow the correction procedure in the table below.
*: Vehicles with automatic transmission only
AlarmSituationCorrection procedure
Exterior alarm sounds 
once for 2 seconds
Tried to lock the doors 
using the entry function 
while the electronic key is 
still inside the passenger 
compartmentRetrieve the electronic key 
from the passenger com-
partment and lock the 
doors again.
Closed the trunk while the 
electronic key is still inside 
and all doors are lockedRetrieve the electronic key 
from the trunk and close 
the trunk lid.
Exterior alarm sounds 
once for 60 seconds
Tried to exit the vehicle 
with the electronic key and 
lock the doors without first 
turning the “ENGINE 
START STOP” switch OFF
Turn the “ENGINE START 
STOP” switch OFF and 
lock the doors again.
Exterior alarm sounds 
once for 10 secondsTried to lock the vehicle 
using the entry function 
while a door is openClose all of the doors and 
lock the doors again.
Interior alarm sounds 
continuously*Tried to open the door and 
exit the vehicle without 
shifting the shift lever to P
Shift the shift lever to P.
Interior alarm pings 
continuously
Switched to ACCES-
SORY mode while the 
driver's door is open 
(Opened the driver's door 
when the “ENGINE 
START STOP” switch is in 
ACCESSORY mode.)
Turn the “ENGINE START 
STOP” switch OFF and 
close the driver's door.
Tu r n e d  t h e  “ E N G I N E  
START STOP” switch OFF 
while the driver's door is 
still open
Close the driver's door. 
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Customizing Your Lexus
ItemFunctionDefault 
settingCustomized
setting
Automatic light 
control system
Light sensor sensitivityLevel 3Level 1 to 5
Time elapsed before headlights 
automatically turn off after 
doors are closed
30 seconds
0 seconds
60 seconds
90 seconds
Windshield 
wipers and 
washer
Switching operation when the 
vehicle is stationalyONOFF
Drip prevention functionONOFF
Time elapsed before the drip 
prevention function operates
Va r i a b l e  
depending on 
the vehicle 
speed
3 seconds
Intuitive parking 
assist
Back sensor operation display 
and buzzerONOFF
Buzzer volumeLevel 3Level 1 to 5
Distance which a sensor detects4.5 ft. (150 cm)1.8 ft. (60 cm)
Illumination
Time elapsed before lights turn 
off15 seconds7. 5  s e c o n d s
30 seconds
Operation when the doors are 
unlockedONOFF
Operation after the “ENGINE 
START STOP” switch turned 
OFF
ONOFF
Front foot well lightingONOFF
Shift lever lightingONOFF
Outer foot lightONOFF