key battery LEXUS LX570 2015 User Guide

1792-1. Driving procedures
2
When driving
LX570_OM_OM60L96U_(U) ■
Operation of the “ENG INE START STOP” switch
When operating the “ENGINE START STOP ” switch, one short, firm press is
enough. If the switch is pressed improp erly, 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. 119)
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 battery 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. 42■
When the electronic key battery is discharged
 P. 872■
Conditions affecting operation
 P. 40 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.

Maintenance and care
4
733
LX570_OM_OM60L96U_(U) 4-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ............ 734
Cleaning and protecting
the vehicle interior ............. 737
4-2. Maintenance
Maintenance
requirements ....................... 740
General maintenance.......... 743
Emission inspection and
maintenance (I/M)
programs ............................... 746
4-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ............................ 747
Hood .......................................... 750
Engine compartment ............ 751
Tires ............................................ 766
Tire inflation pressure .......... 775
Wheels ....................................... 779
Air conditioning filter ............ 781
Electronic key battery ......... 784
Checking and
replacing fuses..................... 786
Light bulbs ................................ 803

7844-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) Electronic key battery Replace the battery with a ne w one if it is discharged.
■ You will need the following items:
● Flathead screwdriver (T o prevent damage to the key, cover the
tip of the screwdriver with rag.)
● Small Phillips-head screwdriver
● Lithium battery (CR1632)
■ Replacing the battery
Take out the mechanical key
(  P. 31).
Remove the cover.
Remove the depleted battery. Insert a new battery with the “+”
terminal facing up.STEP 1
STEP 2
STEP 3

7854-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) ■
If the electronic key battery is discharged
The following symptoms may occur. ●
The smart access system with push-butto n start and wireless remote control will
not function properly. ●
The operational range is reduced.■
Use a CR1632 lithium battery ●
Batteries can be purchased at your Lexus dealer, jewelers, or camera stores. ●
Replace only with the same or equiva lent type recommend ed by your Lexus
dealer. ●
Dispose of used batteries according to the local laws.■
When the card key battery needs to be replaced
The battery for the card key is available on ly at Lexus dealer. Your Lexus dealer can
replace the battery for you.
CAUTION■
Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking. Keep
away from children. Failure to do so co uld result in death or serious injury.
NOTICE■
For normal operation after replacing the battery
Observe the following precautions to prevent accidents. ●
Always work with dry hands.
Moisture may cause the battery to rust. ●
Do not touch or move any other comp onents inside the electronic key.●
Do not bend the battery terminals.

When trouble arises
5
815
LX570_OM_OM60L96U_(U) 5-1. Essential information
Emergency flashers ............... 816
If your vehicle needs to be
towed ....................................... 817
If you think something is
wrong ..................................... 824
Fuel pump shut off
system .................................... 825 5-2. Steps to take in an
emergency
If a warning light turns on
or a warning buzzer
sounds... ................................. 826
If a warning message is
displayed................................ 837
If you have a flat tire .............. 854
If the engine will not
start ......................................... 868
If the shift lever cannot be
shifted from “P”.................... 870
If you lose your keys ............... 871
If the electronic key does
not operate properly ......... 872
If the battery is
discharged ............................ 875
If your vehicle overheats ..... 878
If the vehicle becomes
stuck......................................... 881
If your vehicle has to be
stopped in an
emergency............................ 883

5
When trouble arises
8495-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) * : 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 difficulty receiving sig-
nal from the key. (  P. 872)Interior
buzzer Exterior
buzzerWarning message Details Correction
procedure
Once 
(Flashes) An attempt was
made to start the
engine without
the electronic key
being present, or
the electronic key
was not function-
ing normally.
An attempt was
made to drive
when the regular
key was not inside
the vehicle. Start the engine
with the elec-
tronic key
present
* .

5
When trouble arises
8735-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) If the electronic key does not operate properly
Locking and unlocking the do ors and key linked functions
Using the mechanical key (  P. 31)
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. 40) or the electronic key cannot be used because the battery is
depleted, the smart access system wi th push-button start and wireless
remote control cannot be used. In su ch cases, the doors can be opened or
the engine can be started by following the procedure below.

5
When trouble arises
8755-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) ■
Stopping the engine
Shift the shift lever to “P ” and press the “ENGINE START STOP” switch as you nor-
mally do when stopping the engine. ■
Replacing the key battery
As the above procedure is a temporary meas ure, it is recommended that the elec-
tronic key battery be replaced immediately when the battery is depleted.
(  P. 784)■
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. 178)■
Alarm
Using the mechanical key to lock th e 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. 121)
CAUTION■
When using the mechanical key and operating the power windows and moon
roof
Operate the power window or moon roof after checking to make sure that there is
no possibility of any passenger having any of their body parts caught in the window
or moon roof.
Also, do not allow children to operate the mechanical key. It is possible for children
and other passenger s to get caught in power window and moon roof.

5
When trouble arises
8775-2. Steps to take in an emergency
LX570_OM_OM60L96U_(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 audi o 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. 60)●
Make sure the key is not inside the vehicle when recharging or replacing the
battery. The key may be locked in th e vehicle if the alarm is activated. (  P. 122)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 has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.
Once the engine starts, have th e vehicle checked at your Lexus
dealer, as soon as possible. STEP 3
STEP 4
STEP 5
STEP 6

943Alphabetical index
LX570_OM_OM60L96U_(U) AUX port .................................................574
Auxiliary box ...........................................697
AVS ............................................................. 331
Back-up lights
Replacing light bulbs ...................... 808
Wattage .................................................896
Back door
Back door ................................................ 56
Wireless remote control key...........49
Battery
If the vehicle has discharged
battery.................................................. 875
Preparing and checking
before winter .................................... 376
Bluetooth ®
audio................................... 541
Bluetooth ®
phone ................................. 616
Bottle holder .......................................... 696
Brake
Fluid .......................................................... 894
Parking brake ........................................190
Brake assist ............................................. 349
Break-in tips ............................................. 167
Brightness control
Instrument light control .................... 194
Care
Exterior ....................................................734
Interior...................................................... 737
Seat belts ............................................... 738
Cargo capacity ..................................... 368
Cargo hooks ............................................ 716
CD player................................................ 507 Center differential
lock/unlock switch ............................ 332
Chains ....................................................... 376
Child restraint system
Booster seats, definition .................. 146
Booster seats, installation ................. 151
Convertible seats, definition .......... 146
Convertible seats, installation ......... 151
Infant seats, definition ........................ 146
Infant seats, installation ....................... 151
Installing child restraint systems
with LATCH system ...................... 152
Installing child restraint systems
with seat belts .................................... 154
Installing child restraint systems
with top tether strap ....................... 159
Child safety
Airbag precautions ............................ 134
Battery precautions .............. 763, 877
Child-protectors ...................................53
Child restraint system ....................... 146
Heated steering wheel
precautions........................................ 707
How your child should wear
the seat belt ..........................................95
Installing child restraints..................... 151
Moon roof precautions...................... 115
Power window lock switch ............108
Power window precautions ............ 110
Removed key battery
precautions....................................... 785
Seat belt precautions ..........................96
Seat heater
precautions........................................... 711
Child-protectors ...................................... 53
Cigarette lighter.................................... 704B
C