2018 LEXUS LX570 ignition

5477-2. Steps to take in an emergency
LX570_OM_OM60Q78U_(U) 7
When trouble arises Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of the
electronic key to the engine switch. When the electronic key is detected, a
buzzer sounds and the engine switch
will turn to IGNITION ON mode.
When the smart access system with
push-button start is deactivated in cus-
tomization setting, the engine switch will
turn to ACCESSORY mode.
Firmly depress the brake pedal and check that is shown on the
multi-information display.
Press the engine switch. In the event that the engine still cannot be started, contact your Lexus dealer.■
Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when stopping
the engine. ■
Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediately when the battery is depleted. ( → P. 503)■
Changing engine switch modes
Release the brake pedal and press the engine switch in step above. The engine does
not start and modes will be changed e ach time the switch is pressed. ( → P. 206)■
Alarm
Using the mechanical key to lock th e doors will not set the alarm system.
If a door is unlocked using the mechanical ke y when the alarm system is set, the alarm
may be triggered. ( → P. 77)■
When the electronic key does not work properly ●
Make sure that the smart access system wi th push-button start has not been deacti-
vated in the customization setting. If it is off, turn the function on.
(Customizable features: → P. 580)●
Check if battery-saving mode is set. If it is set, cancel the function. ( → P. 134)Starting the engine 1
2
3
4
3

550 7-2. Steps to take in an emergency
LX570_OM_OM60Q78U_(U) Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximatel y 5 minutes to recharge the battery of
your vehicle.
Open and close any of the doors with the engine switch off.
Maintain the engine speed of the second vehicle and turn the engine 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 connected.
Once the engine starts, have the vehicl e checked at your Lexus dealer, as soon
as possible. ■
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 componen ts 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 disc harge gradually even when the vehicle is not
in use, due to natural discharge and the draini ng 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 mu st be initialized. ( → P. 126)4
5
6
7

562
LX570_OM_OM60Q78U_(U) 8-1. Specifications
Cooling system Capacity (Reference) 17.1 qt. (16.2 L, 14.3 Imp.qt.)
Coolant type Use either of the following.
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and non-
borate coolant with long-life hybrid organic
acid technology
Do not use plain water alone.
Ignition system Spark plug
Make
Gap DENSO SK20HR11
0.043 in. (1.1 mm)
NOTICE ■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine.
Electrical system Battery
Open voltage at 68 ° F
(20 ° C): 12.6 ⎯ 12.8 V Fully charged
12.2 ⎯ 12.4 V Half charged
11.8 ⎯ 12.0 V Discharged
(Voltage is checked 20 minutes after the engine
and all lights are turned off.)
Charging rates 5 A max.

592
LX570_OM_OM60Q78U_(U) 8-2. Customization■
HUD (Head-up Display)
* ( → P. 100)
* : If equipped ■
Vehicle customization ●
When smart access system with push-button start is turned off, unlock door cannot be
selected. ●
When doors are not opened after unlocking and are then automatically re-locked, a
signal will be given if Operation signal (Emergency flashers) or Operation signal
(Buzzer) are set to on. ■
When setting using the multi-information display
When using the vehicle switches to set an item that can also be set using the touch
screen, the item displayed on the Remote Touch will not change immediately.
If the engine switch is first turned to off, the screen display will change once the engine
switch is turned to IGNITION ON mode again. ■
When customizing usin g the Remote Touch
Stop the vehicle in a safe place, apply the parking brake, and shift the shift lever to P. Also,
to prevent battery discharge, leave the engine running while customizing the features. Function Default
setting Customized
setting
Driving support display
(Navigation system
* ) On Off — O —
Driving support display
(Driving assist
* ) On Off — O —
Driving support display
(compass
* ) On Off — O —
Driving support display
(audio
* ) On Off — O —
WARNING ■
During customization
As the engine needs to be running during customization, ensure that the vehicle is
parked in a place with adequate ventilation. In a closed area such as a garage, exhaust
gases including harmful carbon monoxide (CO) may collect and enter the vehicle. This
may lead to death or a serious health hazard.
NOTICE ■
During customization
To prevent battery discharge, ensure that the engine is running while customizing fea-
tures. 1 2 3

608 What to do if... (Troubleshooting)
LX570_OM_OM60Q78U_(U)What to do if... (Troubleshooting) ●
If you lose your mechanical keys, ne w genuine mechanical keys can be made
by your Lexus dealer. ( → P. 112)●
If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( → P. 114)●
Is the electronic key battery weak or depleted? ( → P. 503)●
Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( → P. 206)●
Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person. ●
The function may not operate properly du e to the condition of the radio wave.
( → P. 134)
●
Is the child-protector lock set?
The rear door cannot be opened from in side the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
( → P. 118)If you have a problem, check the foll owing before contacting your Lexus
dealer.
The doors cannot be locked, unlocked, opened or closed You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

609What to do if... (Troubleshooting)
LX570_OM_OM60Q78U_(U) ●
Did you press the engine switch while firmly depressing the brake pedal?
( → P. 205)●
Is the shift lever in P? ( → P. 205)●
Is the electronic key anywhere detectable inside the vehicle? ( → P. 133)●
Is the steering wheel unlocked? ( → P. 208)●
Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. ( → P. 547)●
Is the battery discharged? ( → P. 549)●
Is the engine switch in IGNITION ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
engine switch in IGNITION ON mode ( → P. 215)If you think something is wrong The engine does not start
The shift lever cannot be shifted from P even if you depress the brake
pedal

610 What to do if... (Troubleshooting)
LX570_OM_OM60Q78U_(U) ●
It is locked automatically to prevent theft of the vehicle. ( → P. 207)●
Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( → P. 165)●
The auto power off function will be operated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. ( → P. 207)●
The seat belt reminder light is flashing
Are the driver and the front passe nger wearing the seat belts?
( → P. 522)●
The parking brake indicator is on
Is the parking brake released? ( → P. 218)
Depending on the situation, other type s of warning buzzer may also sound.
( → P. 520, 528)
●
Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( → P. 77)
To stop the alarm, turn the engine switch to IGNITION ON mode or start the
engine. The steering wheel cannot be turned after the engine is stopped
The windows do not open or close by operating the power window
switches
The engine switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and the horn sounds

617Alphabetical index
LX570_OM_OM60Q78U_(U) Engine
Accessory mode............................... 206
Air cleaner ...............................................471
Compartment...................................... 473
Engine switch ...................................... 205
Exhaust gas precautions ................... 74
Hood ........................................................ 472
How to start the engine ................. 205
Identification number ...................... 559
If the engine will not start................544
If your vehicle has to be
stopped in an emergency ............. 511
Ignition switch (engine
switch) ................................................. 205
Overheating ........................................ 552
Engine compartment cover ............. 474
Engine coolant....................................... 478
Capacity .................................................562
Checking................................................478
Preparing and checking
before winter ................................... 382
Engine coolant temperature
gauge ........................................................ 88
Engine immobilizer system ................. 75
Engine oil ................................................. 475
Capacity ................................................ 560
Checking................................................475
Preparing and checking
before winter ................................... 382 Engine switch (ignition switch) ....... 205
Engine switch light
(ignition switch light)......................... 417
Event data recorder (EDR)................... 10
Exhaust gas precautions ....................... 74
First-aid kit holder ................................ 428
Flat tire ...................................................... 532
Floor mats....................................................26
Fluid
Automatic transmission ..................563
Brake........................................................ 564
Steering .................................................. 564
Washer ...................................................485
Fog lights...................................................229
Replacing light bulbs ...................... 508
Switch ...................................................... 229
Footwell lights .......................................... 417
Four-wheel AHC (Active Height
Control Suspension) ....................... 295
Easy access mode ............................ 297
Disabling the height control ......... 298
Selecting vehicle height.................. 295
Four-wheel drive system
Center differential
lock/unlock .......................................304
Four-wheel drive control
switch ...................................................303
Warning light ....................................... 522
Front automatic air conditioning
system .................................................... 399
Front doors ................................................ 115 F
* : Refer to
the “NAVIGATION SYSTEM OWNER’S MANUAL”.