Lexus IS250C 2010 Do-It-Yourself Maintenance / LEXUS 2010 IS350C/250C QUICK GUIDE OWNERS MANUAL (OM53738U)

What to do if ...
91
If the electronic key does not operate
properly
■Unlocking and locking the doors
To unlock or lock the vehicle, use the mechanical
key to remove the lock cover on the driver's door
handle. The mechanical key is stored inside the
electronic key.
Unlocks
Locks
■Starting the engine
Depress the brake pedal (for automatic trans-
mission) or clutch pedal (for manual transmis-
sion).
Touch the Lexus emblem side of the electronic
key to the “ENGINE START STOP” switch.
Press the “ENGINE START STOP” switch
within 10 seconds of the buzzer, keeping the
brake pedal (for automatic transmission) or
clutch pedal (for manual transmission)
depressed.
1
2
If the electronic key battery becomes depleted, replace it with a new battery. For instruc-
tions on replacing the battery, refer to the Owner's Manual. If you need further assistance,
contact your Lexus dealer.

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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
If the engine doesn't start
Make sure that the correct operating procedures have been followed.
Automatic transmission
Make sure that the brake pedal (for automatic
transmission) or clutch pedal (for manual trans-
mission) is firmly depressed when attempting to
start the engine. (P.1 9 )
Manual transmission
Make sure that the steering wheel lock is released.
To release the steering wheel lock, gently turn the
wheel left or right while pressing the “ENGINE
START STOP” switch. (P.1 1 )
Brake/clutch pedal
Steering wheel lock
If the engine still does not start, see the Owner's Manual for more information or contact
your Lexus dealer.

What to do if ...
93
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 both side 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 both side 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.)
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.

94
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
Customizing Your Lexus
Your vehicle includes a variety of electronic features that can be personalized to your
preferences. Programming these preferences requires specialized equipment and may
be performed by an authorized Lexus dealership.
Some function settings are changed simultaneously with other functions being customized.
Contact your Lexus dealer for further details.
ItemFunctionDefault
settingCustomized
setting
Smart access
system with
push-button startOperation signal
(Emergency flashers)OnOff
Operation signal
(Buzzer)OnOff
Wireless remote
control
Unlocking operation
Driver's door
unlocked in
one step, both
side doors
unlocked in
two steps
Both side
doors
unlocked in
one step
Automatic door lock function
to be activated if door is not
opened after being unlocked
OnOff
Ti m e e l a p s e d b e f o r e a u t o -
matic door lock function is
activated if door is not opened
after being unlocked
60 seconds
30 seconds
120 seconds
Operation signal
(Emergency flashers)OnOff
Operation signal
(Buzzer)OnOff
Door lock buzzerOnOff
Trunk unlocking functionOnOff
Trunk unlocking operationPush and hold Push twice
One short push
Pa n i c f u n c t i o nOnOff

Customizing Your Lexus
95
ItemFunctionDefault
settingCustomized
setting
Door lock
Unlocking using a key
Driver's door
unlocked in
one step, both
side doors
unlocked in
two steps
Both side
doors
unlocked in
one step
Speed-detecting automatic
door lock function
(Manual transmissions)
OnOff
Speed-detecting automatic
door lock function
(Automatic transmissions)
OffOn
Opening driver's door unlocks
both side doors
(Manual transmissions)
OnOff
Opening driver's door unlocks
both side doors
(Automatic transmissions)
OffOn
Shifting gears to P unlocks
both side doorsOnOff
Shifting gears to position other
than P locks both side doorsOnOff
Steering wheelAuto tilt-away functionOnOff
Po w e r w i n d o w sWireless remote control linked
operationOnOff

96
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
ItemFunctionDefault
settingCustomized
setting
Retractable
hardtopRetractable hardtop operation
control linked to the intuitive
parking assist
OnOff
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
LightsDaytime running light system
(U.S.A. only)OnOff
Windshield
wipers and
washer
Switching operation when the
vehicle is stationaryOnOff
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 detects4.9 ft. (150 cm)2.0 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 lightsOnOff
Shift lever lightOnOff
Outer foot lightsOnOff

Memo
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Your Lexus dealer
Your Lexus dealer will provide quality maintenance and any other assistance
you may require.
If there is not a Lexus dealer near you, please call the following number:
■U.S. OWNERS
●In the U.S. mainland or Canada:
Lexus Roadside Assistance
1-800-25-LEXUS or 1-800-255-3987 (Toll-Free)
●In Hawaii:
Servco Automotive Roadside Assistance/Customer Services
1-800-25-LEXUS or 1-800-255-3987 (Toll-Free)
■CANADIAN OWNERS
●In Canada or the U.S. mainland:
Lexus Roadside Assistance/Customer Service
1-800-26-LEXUS or 1-800-265-3987 (Toll-Free)
Please access our websites for further information.
●The U.S. mainland: www.lexus.com
●Hawaii: www.servcolexus.com
●Canada : www.lexus.ca
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