stop start Lexus IS250 2012 Using the audio system / 2012 IS250,IS350 OWNERS MANUAL QUICK GUIDE (OM53A98U)
[x] Cancel search | Manufacturer: LEXUS, Model Year: 2012, Model line: IS250, Model: Lexus IS250 2012Pages: 82, PDF Size: 1.58 MB
Page 8 of 82

8
Keys
■Electronic key
Smart access system with push-button start
( P.9 ,  1 4 )
*: If equipped
■ Mechanical key
● Locks and unlocks the doors
● Opens the trunk
● Locks and unlocks the glove box
The mechanical key is stored inside the electronic
key. To extract the key, release the latch and pull,
or if equipped with a card key, press the button
and pull.
■ Wireless remote control
Locks all doors
Unlocks all doors
Unlocks the trunk (press and hold)
Sounds alarm (press and hold)
(Use the alarm to attract attention to the vehi-
cle in order to help deter break-ins. To stop the
alarm, press any button on the wireless remote
control.)
Card key*
1
2
3
4 
Page 10 of 82

10
Theft Deterrent System
■Engine immobilizer system
The engine immobilizer system prevents the
engine from being started in the event that an
attempt is made to start the vehicle using an
unregistered key. 
The security indicator ligh t flashes to indicate that
the system is set.
■ Alarm
The system sounds the alarm and flashes  lights when forcible entry is detected.
To set the alarm:  lock all the doors from outside the vehicle. The security indicator light
comes on to indicate that the alarm is in  its preparation state. When the indicator light
begins to flash, the system is armed.
To deactivate or stop the alarm:  turn the “ENGINE START STOP” switch to ACCESSORY
or IGNITION ON mode, start the engine by pressing the “ENGINE START STOP” switch,
or unlock the doors or trunk.
■ Steering lock
The steering wheel locks when the “ENGINE
START STOP” switch is OFF.
When the steering lock cannot be released, the
green indicator light on the “ENGINE START
STOP” switch will flash and a message will be
shown on the multi-information display. To release
it, gently turn the wheel left or right while pressing
the “ENGINE START STOP” switch.
The theft deterrent system includes the followi ng features to help protect your vehicle from
theft. 
Page 14 of 82

14
Engine (ignition) Switch
■Starting the engine
Automatic transmission
Make sure the parking brake is engaged and the
shift lever is in P.
Depress the brake pedal.The “ENGINE START STOP” switch indi-
cator light turns green.
Press the “ENGINE START STOP” switch.
Manual transmission
Make sure the parking brake is engaged and the
shift lever is in N.
Depress the clutch pedal.The “ENGINE START STOP” switch indi-
cator light turns green.
 Press the “ENGINE START STOP” switch.
■ Stopping the engine
 Engage the parking brake and shift the shift lever to P (for automatic transmission) or N
(for manual transmission).
 Press the “ENGINE START STOP” switch.
With the electronic key on your person, the engine can be started by simply pressing the
“ENGINE START STOP” switch, while depressing the brake pedal or clutch pedal.
(The mechanical key cannot be used to start the engine.) 
Page 15 of 82

15
■Changing power modes
To change power modes without turning on  the engine, press the “ENGINE START STOP”
switch without depressing the brake pedal (for automatic transmission) or the clutch pedal
(for manual transmission). The modes can be changed in the following order:
Automatic Transmission (If Equipped)
■ Shift positions
P Pa r k
R Reverse
N Neutral (drive not engaged)
D Drive
S S mode
The vehicle can only be shifted out of P when the “ENGINE START STOP” switch is in
IGNITION ON mode and the brake pedal is
depressed.
ACCESSORY mode IGNITION ON mode
(Indicator light: amber)
OFF
(Indicator light: off) 
Page 75 of 82

What to do if ...
75
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 ke y 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 ba ttery, refer to the Owner's Manual.  If you need further assistance,
contact your Lexus dealer. 
Page 76 of 82

76
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 4 )
 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 0 )
Brake/clutch pedal
Steering wheel lock
If the engine still does not st art, see the Owner's Manual fo r more information or contact
your Lexus dealer. 
Page 77 of 82

What to do if ...
77
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.)
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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80
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
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 is turned 
OFF
OnOff
Front footwell lightsOnOff
Shift lever lightOnOff
Outer foot lightsOnOff
Seat belt 
reminderVehicle speed linked seat belt 
reminder buzzerOnOff