battery LEXUS LX570 2018 Workshop Manual

503
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance
6
Maintenance and care
Electronic key battery ●
Flathead screwdriver ●
Lithium battery (CR2032)
Take out the mechanical key.
Remove the cover. To prevent damage to the key, cover the
tip of the flathead screwdriver with a
tape.
Remove the depleted battery. When removing the cover, if the battery
cannot be seen due to the electronic key
module attaching to the upper cover,
remove the electronic key module from
the cover so that the battery is visible as
shown in the illustration.
Insert a new battery with the “+” termi-
nal facing up.Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery 1
2
3

504
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance■
Use a CR2032 lithium battery ●
Batteries can be purc hased at your Lexus dealer, loca l electrical appliance shops or
camera stores. ●
Replace only with the same or equivalent type recommended by the manufacturer. ●
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 only at Lexus dealers. Your Lexus dealer can
replace the battery for you. ■
If the electronic key battery is depleted
The following symptoms may occur: ●
The smart access system with push-button start and wireless remote control will not
function properly. ●
The operational rang e will be reduced.
WARNING ■
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 coul d 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 co mponent inside the remote control.●
Do not bend either of the battery terminals.

509
LX570_OM_OM60Q78U_(U) 7When trouble arises 7-1. Essential information
Emergency flashers ................... 510
If your vehicle has to be
stopped in an emergency....... 511
7-2. Steps to take in an emergency
If your vehicle needs
to be towed................................. 512
If you think something is
wrong ............................................ 518
Fuel pump shut off system ....... 519
If a warning light turns
on or a warning buzzer
sounds..........................................520
If a warning message is
displayed.....................................528
If you have a flat tire .................. 532
If the engine will not start ........ 544
If the electronic key does
not operate properly ............. 546
If the vehicle battery is
discharged ................................. 549
If your vehicle overheats ......... 552
If the vehicle becomes
stuck .............................................555

510
LX570_OM_OM60Q78U_(U) 7-1. Essential information
Emergency flashers Press the switch. All the turn signal lights will flash.
To turn them off, press the switch once
again. ■
Emergency flashers
If the emergency flashers are used for a long time while the engine is not operating, the
battery may discharge.The emergency flashers are used to warn other drivers when the vehicle has
to be stopped in the road due to a breakdown, etc.

530 7-2. Steps to take in an emergency
LX570_OM_OM60Q78U_(U) ■
If “See Owner’s Manual” is shown ●
If “Smart Access System Ma lfunction” is shown, this may be a malfunction.
Immediately have the vehicle inspected by your Lexus dealer. ●
If “Transmission Fluid Temp High” is shown, it indicates that the automatic transmission
fluid temperature is too high.
Immediately stop the vehicle in a safe place, shift the shift lever to P and wait until the
warning message and light go off. If the warning message and light go off, you may
start the vehicle again. If the warning message and light do not go off, contact your
Lexus dealer. ■
If “Shift to P Before Ex iting Vehicle” is shown
Message is displayed when the driver’s door is opened without turning the engine switch
to off with the shift lever in any position other than P.
Shift the shift lever to P. ■
If “Power Turned Off to Save Battery” is shown
Power was turned off due to the automatic power off function.
Next time when starting the engine, increase the engine speed slig htly and maintain that
level for approximately 5 minu tes to recharge the battery.■
When a message that indicates the need for the shift lever operation is shown
To prevent the shift lever from being operat ed incorrectly or the vehicle from moving
unexpectedly, a message that re quires shifting the shift leve r may be shown on the multi-
information display. In that case, follow the instruction of the message and shift the shift
lever. ■
When “Headlight System Malfunction Visit Your Dealer” is displayed on the multi-
information display
The following systems may be malfunctioning. Have the vehicle inspected by your Lexus
dealer. ●
The LED headlight system ●
The automatic headlight leveling system ●
Automatic High Beam ■
If “Forward Camera System Unavailable” or “Forward Camera System Unavailable
Clean Windshield” is displayed (if equipped)
The following systems may be suspended until the problem shown in the message is
resolved. ●
PCS (Pre-Collision System) ●
LDA (Lane Departure Alert) ●
Dynamic radar cruise control with full-speed range ●
Automatic High Beam ■
If “Engine Oil Level Low” is shown
Indicates that engine oil level is low.
Check the level of engine oil, and add if necessary.
This message may appe ar if the vehicle is stopped on a slope.
Move the vehicle to a level surface and check to see if the message disappears.

544
LX570_OM_OM60Q78U_(U) 7-2. Steps to take in an emergency
If the engine will not start One of the following may be the cause of the problem: ●
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ●
The engine may be flooded.
Try to restart the engine again follo wing correct starting procedures.
( → P. 205)●
There may be a malfunction in th e engine immobilizer system. ( → P. 75)
One of the following may be the cause of the problem: ●
The battery may be discharged. ( → P. 549)●
The battery terminal connections may be loose or corroded.
The engine starting system may be malfun ctioning due to an electrical problem
such as an open circuit or a blown fuse. However, an interim measure is available
to start the engine. ( → P. 545)If the engine will not start even though correct starting procedures are being
followed ( → P. 205), consider each of the following points:
The engine will not start even when the starter motor operates nor-
mally.
The starter motor turns over slowly , the interior lights and headlights
are dim, or the horn does not sound or sounds at a low volume.
The starter motor does not turn over.

5457-2. Steps to take in an emergency
LX570_OM_OM60Q78U_(U) 7
When trouble arises One of the following may be the cause of the problem: ●
One or both of the battery terminals may be disconnected. ●
The battery may be discharged. ( → P. 549)●
There may be a malfunction in the steering lock system.Contact your Lexus dealer if the problem cannot be repaired, or if repair procedures
are unknown.
When the engine does not start, the follo wing steps can be used as an interim
measure to start the engine if the engine switch is functioning normally.
Set the parking brake.
Put the shift lever in P.
Set the engine switch to the ACCESSORY mode.
Push and hold the engine switch for about 15 seconds while depressing the
brake pedal firmly.
Even if the engine can be started using the above steps, the system may be mal-
functioning. Have the vehicle in spected by your Lexus dealer.The starter motor does not turn ove r, the interior lights and headlights
do not turn on, or the horn does not sound.
Emergency start function 1
2
3
4

546
LX570_OM_OM60Q78U_(U) 7-2. Steps to take in an emergency
If the electronic key does not operate properly Use the mechanical key ( → P. 111) in
order to perform the following opera-
tions (driver’s door only):
Locks all the doors
Closes the windows and moon roof
*(turn and hold)
Unlocks the doors Turning the key rearward unlocks the
driver’s door. Turning the key once again
unlocks the other doors.
Opens the windows and moon roof
* (turn and hold)
* : These settings must be cust omized at your Lexus dealer.If communication between the electronic key and vehicle is interrupted
( → P. 134) or the electronic key ca nnot 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 and
the engine can be started by following the procedure below.
Locking and unlocking the doors and key linked functions 1
2
3
4

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

549
LX570_OM_OM60Q78U_(U) 7
When trouble arises 7-2. Steps to take in an emergency
If the vehicle battery is discharged If you have a set of jumper (or booster) cables and a second vehicle with a 12-volt
battery, you can jump start your Lexus following the steps below.
Confirm that the electronic key is
being carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate and
doors locked. ( → P. 79)
Open the hood. Remove the engine compartment cover. ( → P. 474)
Connect the jumper cables.
Positive (+) battery terminal on your vehicle
Positive (+) battery termin al on the second vehicle
Negative (-) battery terminal on the second vehicle
Connect the jumper cable to ground on your vehicle as shown in the illus-
tration.The following procedures may be used to start the engine if the vehicle’s bat-
tery is discharged.
You can also call your Lexus dealer or qualified repair shop. 1
2
3
1
2
3
4