Page 52 of 58
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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 electronic key battery becomes 
discharged
nUnlocking and locking the doors
To unlock or lock the vehicle, use the mechanical
key. The mechanical key is stored inside the elec-
tronic key.
Unlocks
Locks
nStarting the engine
Depress the brake pedal.
Hold the electronic key close to the engine
switch (within 0.4 in. [10 mm]), making sure that
the button side of the key is facing toward you. 
Press the engine switch within 5 seconds after
the buzzer sounds, keeping the brake pedal
depressed.
1
2
ILYQ0A005
For instructions on replacing the electronic key battery, refer to the Owner's Manual. If you
need further assistance, contact your Lexus dealer. 
         
        
        
     
        
        Page 53 of 58
What to do if ...
53
If the engine doesn't start
Make sure that the correct operating procedures have been followed.
Make sure that the brake pedal is firmly
depressed when attempting to start the engine.
(P.1 7 )
u
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
switch. (P.9 )
ILYQ3A00
Brake pedal
ILYQ1A00
Steering wheel lock
If the engine still does not start, see the Owner's Manual for more information or contact
your Lexus dealer. 
         
        
        
     
        
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54
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.
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.
Tried to exit the vehicle 
with the electronic key and 
lock the doors without first 
turning the engine switch 
OFF
Tu r n  t h e  e n g i n e  s w i t c h  
OFF 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 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 
continuouslyTried to open the door and 
exit the vehicle without 
shifting the shift lever to P
Shift the shift lever to P.
Interior alarm rings 
continuously
Switched to ACC mode 
while the driver's door is 
open (Opened the driver's 
door when the engine 
switch is in ACC mode.)
Tu r n  t h e  e n g i n e  s w i t c h  
OFF and close the driver's 
door.
Turned the engine 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
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
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 
switch turned OFFONOFF
Foot lightsONOFF
Shift lever lightONOFF
Outer foot lightONOFF
Rear sunshade
Time elapsed before the 
reverse operation feature acti-
vates
0.7 seconds
0 seconds
0.9 seconds
1.2 seconds