change key battery LEXUS LX570 2014 Owners Manual

451-2. Opening, closing and locking the doors
1
Before driving
LX570_OM_OM60L21U_(U) * 1
: A message will be shown on the multi-information display in the instrument
cluster.
* 2
: If the engine does not start when the electronic key is inside the vehicle, the
electronic key battery may be depleted or there may be difficulties receiving
signal from the key. (  P. 3 9 )■
If the smart access system with push-button start does not operate properly ●
Locking and unlocking the doors: Use the mechanical key. (  P. 8 6 7 )●
Starting the engine:  P. 8 6 8■
When the electronic key battery is fully depleted
 P. 7 8 0■
Customization
Settings (e.g. smart access system with push-button start) can be changed.
(Customizable features  P. 9 0 6 )Alarm Situation Correction procedure
Interior alarm pings
once
* 1
The electronic key has a low
battery Replace the electronic
key battery
An attempt was made to start
the engine without the elec-
tronic key being present, or
the electronic key was not
functioning normally Start the engine with the
electronic key
present
* 2
Interior alarm pings
once and exterior
alarm sounds 3
times
* 1
The driver’s door was closed
after the key was carried out-
side the vehicle, and the
“ENGINE START STOP”
switch was not turned OFF Tu r n t h e “ E N G I N E
START STOP” switch
OFF and close the
driver’s door again
An occupant carried the
electronic key outside the
vehicle and closed the door
while the “ENGINE START
STOP” switch was not OFF Bring the electronic key
back into the vehicle

491-2. Opening, closing and locking the doors
1
Before driving
LX570_OM_OM60L21U_(U) ■
Operation signals ●
Doors: A buzzer sounds and the emergency flashers flash to indicate that the
doors have been locked/unlocked. (Locked: Once; Unlocked: Twice)●
Windows and moon roof: A buzzer sounds to indicate that the windows and
moon roof are opening.■
Operating conditions
The wireless remote control will not operate when the “ENGINE START STOP”
switch is in any position other than OFF. ■
Door lock buzzer
If a door is not fully closed, a buzzer soun ds continuously for 5 seconds if an attempt
to lock the door is made. Fully close the do or to stop the buzzer, and lock the vehi-
cle once more. ■
Power back door operation
The power back door can be opened while the vehicle is locked. (one motion) ■
Alarm
Using the wireless remote control to lock the door will set the alarm system. ■
Electronic key battery depletion
 P. 4 1■
Security feature
 P. 4 3■
If the wireless remote control does not operate properly ●
Locking and unlocking the doors: Use the mechanical key. (  P. 8 6 7 )●
Starting the engine:  P. 8 6 8■
When the electronic key battery is fully depleted
 P. 7 8 0■
Conditions affecting operation
 P. 3 9■
Customization
Settings (e.g. unlocking function) can be changed.
(Customizable features  P. 9 0 6 )

1772-1. Driving procedures
2
When driving
LX570_OM_OM60L21U_(U) ■
Operation of the “ENGINE START STOP” switch
When operating the “ENGINE START STOP” switch, one short, firm press is
enough. If the switch is pressed improperly, the engine may not start or the
“ENGINE START STOP” switch mode may not change. It is not necessary to press
and hold the switch. ■
When the steering lock cannot be released
■
If the engine does not start
The engine immobilizer system may not have been deactivated. (  P. 117)
Contact your Lexus dealer. ■
When the “ENGINE START STOP” switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Lexus
dealer immediately. ■
Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes with the shift
lever in P, the “ENGINE START STOP” switch will automatically turn off. However,
this function cannot entirely prevent ba ttery discharge. Do not leave the vehicle
with the “ENGINE START STOP” switch in ACCESSORY mode for long periods
of time when the engine is not running. ■
Electronic key battery depletion
 P. 4 1■
When the electronic key battery is discharged
 P. 8 6 7■
Conditions affecting operation
 P. 3 9 The green indicator light on the “ENGINE
START STOP” switch will flash and a mes-
sage will be shown on the multi-information
display. Press the “ENGINE START STOP”
switch again while turning the steering wheel
left and right.

6853-6. Using the interior lights
3
Interior features
LX570_OM_OM60L21U_(U) Luggage compartment light
Off
Door position■
Illuminated entry system
The lights automatically turn on/off according to “ENGINE START STOP” switch
mode, the presence of the electronic key, whether the doors are locked/unlocked,
and whether the doors are open/closed. ■
To prevent battery discharge
If the interior lights remain on when the “ENGINE START STOP” switch is turned
off, the lights will go off automatically after 20 minutes. ■
Customization
Settings (e.g. Time period before the inte rior lights turn off.) can be changed.
(Customizable features  P. 9 0 6 ) Luggage compartment light

5
When trouble arises
8695-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) ■
Stopping the engine
Shift the shift lever to “P” and press th e “ENGINE START STOP” switch as you nor-
mally do when stopping the engine. ■
Replacing the key battery
As this above procedure is a temporary measure, it is recommended that the elec-
tronic key battery be replaced immediately when the battery depletes. (  P. 7 8 0 )■
Changing “ENGINE START STOP” switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and press the
“ENGINE START STOP” switch.
The engine does not start and modes will be changed each time the switch is
pressed. (  P. 1 76 )■
Alarm
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set, the
alarm may be triggered. (  P. 1 1 9 )