Page 846 of 956
8445-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) Interior
buzzer Exterior
buzzerWa r n i n g m e s s a g e Details Correction
procedure
Con-
tinuous
(Flashes) The driver’s door
was opened when
the shift lever was
not in “P” and the
“ENGINE START
STOP” switch was
not turned off. Shift the shift lever
to “P”.
Con-
tinuous Con-
tinuous
(Displayed alternately)
(Flashes) The driver’s door
was opened and
closed while the
electronic key was
not in the vehicle,
the shift lever was
not in “P” and the
“ENGINE START
STOP” switch was
not turned off. • Shift the shift
lever to “P”.
• Bring the elec-
tronic key back
into the vehicle.
Page 847 of 956
5
When trouble arises
8455-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) Once
(Flashes) •When the doors
were unlocked
with the
mechanical key
and then the
“ENGINE
START STOP”
switch was
pressed, the
electronic key
could not be
detected in the
vehicle.
• The electronic
key could not be
detected in the
vehicle even
after the
“ENGINE
START STOP”
switch was
pressed two
consecutive
times. Touch the elec-
tronic key to the
“ENGINE START
STOP” switch
while depressing
the brake pedal.Interior
buzzer Exterior
buzzerWa r n i n g m e s s a g e Details Correction
procedure
Page 848 of 956
8465-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) Once The electronic key
has a low battery. Replace the elec-
tronic key battery.
( P. 7 8 0 )
Once
(Flashes) A door was
opened and
closed with the
“ENGINE START
STOP” switch
turned off and
then the
“ENGINE START
STOP” switch was
put in ACCES-
SORY mode
twice without the
engine being
started. Press the
“ENGINE START
STOP” switch
while depressing
the brake pedal.
Once
(Flashes) The steering lock
could not be
released within 3
seconds of the
“ENGINE START
STOP” switch
being pressed. Press the
“ENGINE START
STOP” switch
while depressing
the brake pedal
and moving the
steering wheel left
and right.Interior
buzzer Exterior
buzzerWa r n i n g m e s s a g e Details Correction
procedure
Page 868 of 956
8665-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) If you lose your keys New genuine Lexus keys can be made by your Lexus dealer, using the other
keys and the key number stamped on your key number plate.
Page 869 of 956
5
When trouble arises
8675-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) If the electronic key do es not operate properly
Locking and unlocking the doors and key linked functions
Using the mechanical key ( P. 3 1 )
in order to perform the following
operations.
Locks all doors
Closes the windows/moon roof
(turn and hold)
*Unlocks the door
Turning the key rearward
unlocks the driver’s door. Turn-
ing the key once again unlocks
the other doors.
Opens the windows/moon roof
(turn and hold)
*
* : This setting must be customized
at your Lexus dealer.If communication between the electron ic key and vehicle is interrupted
( P. 39) or the electronic key cannot be used because the battery is
depleted, the smart access system with push-button start and wireless
remote control cannot be used. In such cases, the doors can be opened or
the engine can be started by following the procedure below.
Page 870 of 956
8685-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) Starting the engine
Shift the shift lever to “P” and apply the brakes.
Touch the Lexus emblem side of
the electronic key (including the
card key)
to the “ENGINE START
STOP” switch. An alarm will sound to indicate that
the start function cannot detect the
electronic key that is touched to
the “ENGINE START STOP”
switch if any of the doors is opened
and closed while the key is touched
to the switch.
Press the “ENGINE START STOP” switch within 10 seconds
after the buzzer sounds, keepin g the brake pedal depressed.
In the event that the “ENGINE START STOP” switch still cannot be oper-
ated, contact your Lexus dealer. STEP 1
STEP 2
STEP 3
Page 871 of 956
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 )
Page 873 of 956

5
When trouble arises
8715-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) ■
Starting the engine when the battery is discharged
The engine cannot be started by push-starting. ■
Avoiding a discharged battery ●
Turn off the headlights and the audio system while the engine is off. ●
Turn off any unnecessary electrical compon ents when the vehicle is running at a
low speed for an extended period, such as in heavy traffic, etc.■
Charging the battery
The electricity stored in the battery will discharge gradually even when the vehicle
is not in use, due to natural discharge and the draining effects of certain electrical
appliances. If the vehicle is left for a long time, the battery may discharge, and the
engine may be unable to start. (The battery recharges automatically during driving.) ■
When the battery is removed or discharged ●
The power back door must be initialized. ( P. 6 0 )●
Make sure the key is not inside the vehicle when recharging or replacing the
battery. The key may be locked in the vehicle if the alarm is activated. ( P. 1 2 0 )Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the battery of your vehicle.
Open and close any of the do ors with the “ENGINE START
STOP” switch off.
Maintain the engine speed of th e second vehicle and turn the
“ENGINE START STOP” switch to IGNITION ON mode,
then start the vehicle’s engine.
Once the vehicle’s engine ha s started, remove the jumper
cables in the exact reverse ord er in which they were con-
nected.
Once the engine starts, have the vehicle checked at your Lexus dealer,
as soon as possible. STEP 3
STEP 4
STEP 5
STEP 6