door lock LEXUS LS500 2021 Repair Manual

3916-3. Do-it-yourself maintenance
6
Maintenance and care
The battery is located in the trunk
under the luggage mat.
Removing the luggage mat: P.349
■Before recharging
When recharging, the battery produces
hydrogen gas which is flammable and
explosive. Therefore, observe the following
precautions before recharging:
●If recharging with the battery installed on
the vehicle, be sure to disconnect the
ground cable.
●Make sure the charger is off when con-
necting and disconnecting the charger
cables to the battery.
■After recharging/reconnecting the bat-
tery
●Unlocking the doors using the smart
access system with pu sh-button start may
not be possible immediately after recon-
necting the battery. If this happens, use
the wireless remote control or the
mechanical key to lock/unlock the doors.
●Start the engine with the engine switch in
ACCESSORY mode. The engine may
not start with the engine switch turned off.
However, the engine will operate nor-
mally from the second attempt.
●The engine switch mode is recorded by
the vehicle. If the battery is reconnected,
the vehicle will return the engine switch
mode to the status it was in before the battery was disconnected. Make sure to
turn off the engine switch before discon-
necting the battery. Take extra care when
connecting the battery if the engine
switch mode prior to discharge is
unknown.
If the system will not start even after multiple
attempts, contact your Lexus dealer.
Battery
Location
WARNING
■Chemicals in the battery
The battery contains poisonous and cor-
rosive sulfuric acid and may produce
hydrogen gas which is flammable and
explosive. To reduce the risk of death or
serious injury, take the following precau-
tions while working on or near the bat-
tery:
●Do not cause sparks by touching the
battery terminals with tools.
●Do not smoke or light a match near the
battery.
●Avoid contact with eyes, skin and
clothes.
●Never inhale or swallow electrolyte.
●Wear protective sa fety glasses when
working near the battery.
●Keep children away from the battery.
■Where to safely charge the battery
Always charge the battery in an open
area. Do not charge the battery in a
garage or closed room where there is
insufficient ventilation.
■Emergency measures regarding
electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean water for at
least 15 minutes and get immediate
medical attention. If possible, continue
to apply water with a sponge or cloth
while traveling to the nearest medical
facility.

4427-2. Steps to take in an emergency
■When the electronic key does not work
properly
●Make sure that the smart access system
with push-button start has not been dis-
abled at your Lexus dealer. If it has been
disabled, re-enable it.
●Check if battery-saving mode is set. If it is
set, cancel the function. (P.115)
■Unlocking the door
Use the mechanical key ( P.100) in
order to perform the following opera-
tions: 1
Pull the driver’s door handle and
insert the mechanical key.
2 Unlock the door.
3 Remove the key, return the handle,
and then pull the handle again.
■Locking the door
1 With the door open, push down the
inside lock button.
2 Close the door.
■Trunk
Turn the mechanical key clockwise to
open. ( P.66)
If the electronic key does not
operate properly
If communication between the
electronic key and vehicle is inter-
rupted ( P.115) 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 and trunk can be opened and
the engine can be started by follow-
ing the procedure below.
NOTICE
■In case of a smart access system with
push-button start malfunction or
other key-related problems
Take your vehicle with all the electronic
keys provided with your vehicle to your
Lexus dealer.
Locking and unlocking the
doors, unlocking the trunk

4437-2. Steps to take in an emergency
7
When trouble arises
■Key linked functions
1 Closes the windows and the moon
roof
* or panoramic moon roof* (turn
and hold)
2 Opens the windows and the moon
roof
* or panoramic moon roof* (turn
and hold)
These settings must be customized at your
Lexus dealer.
*:If equipped
1 Depress the brake pedal.
2 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 custom-
ization setting, the engine switch will turn
to ACCESSORY mode.
3 Firmly depress the brake pedal and
check that is shown on the
multi-information display.
4 Press the engine switch.
In the event that the engine still cannot
be started, contact your Lexus dealer.
■Stopping the engine
Set the parking brake, shift the shift position
to P and press the engine switch as you nor-
mally do when stopping the engine.
■Electronic key battery
As the above procedure is a temporary
measure, it is recommended that the elec-
tronic key battery be replaced immediately
when the battery is depleted. ( P.410)
■Alarm (for Canada)
If a door or trunk is unlocked using the
mechanical key when the alarm system is
set, the alarm may be triggered. ( P.66)
WARNING
■When using the mechanical key and
operating the power windows or the
moon roof or panoramic moon roof
Operate the power window or the moon
roof or panoramic moon roof after
checking to make sure that there is no
possibility of any passe nger having any of
their body parts caught in the window or
the moon roof or panoramic moon roof.
Also, do not allow ch ildren to operate the
mechanical key. It is possible for children
and other passengers to get caught in
the power window or the moon roof or
panoramic moon roof.
Starting the engine

4447-2. Steps to take in an emergency
■Changing engine switch modes
Release the brake pedal and press the
engine switch in step 3 above. The engine
does not start and modes will be changed
each time the switch is pressed. ( P.177)
If you have a set of jumper (or booster)
cables and a second vehicle with a
12-volt battery, you can jump start your
vehicle by following the steps below.
Method connecting jumper (or
booster) cables to the battery
1 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.67)
2 Open the trunk lid and remove the
luggage mat. ( P.349)
In the event that the trunk opener cannot
be used, use the mechanical key to open
the trunk. (P.442)
If the vehicle battery is dis-
charged
The following procedures may be
used to start the engine if the vehi-
cle’s battery is discharged.
You can also call your Lexus dealer
or a qualified repair shop.
Restarting the engine

4457-2. Steps to take in an emergency
7
When trouble arises
3Connect a positive jumper cable clamp to on your vehicle and connect the
clamp on the other end of the positive cab le to on the second vehicle. Then,
connect a negative cable clamp to on the second vehicle and connect the
clamp at the other end of the negative cable to .
Positive (+) battery terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Negative (-) battery terminal (your vehicle)
4 Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to
recharge the battery of your vehi-
cle.
5 Open and close any of the doors of
your vehicle with the engine switch
off.
6 Maintain the engine speed of the
second vehicle and start the engine
of your vehicle by turning the
engine switch to IGNITION ON
mode.
7 Once the vehicle’s engine has
started, remove the jumper cables
in the exact reverse order from
which they were connected.
Method connecting jumper (or
booster) cables to the exclusive
jump starting terminal
1 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.67)
2 Open the hood. Remove the ser-
vice cover. ( P.381, 385)
3 Open the fuse box cover.
A
B
C
D
A
B
C
D

4477-2. Steps to take in an emergency
7
When trouble arises
8Open and close any of the doors of
your vehicle with the engine switch
off.
9 Maintain the engine speed of the
second vehicle and start the engine
of your vehicle by turning the
engine switch to IGNITION ON
mode.
10 Once the vehicle’s engine has
started, remove the jumper cables
in the exact reverse order from
which they were connected.
11 Close the exclusive jump starting
terminal cover, and reinstall the fuse
box cover to its original position.
12 Install the service cover. ( P.385)
13 Install the engine cover. ( P.385)
Once the engine starts, have the vehi-
cle inspected at your Lexus dealer as
soon as possible.
■Starting the engine when the battery is
discharged
The engine cannot be started by push-start-
ing.
■To prevent battery discharge
●Turn off the headlights and the audio sys-
tem while the engine is off.
●Turn off any unnecessary electrical com-
ponents when the vehicle is running at a
low speed for an extended period, such
as in heavy traffic.
■When the battery is removed or dis-
charged
●Information stored in the ECU is cleared.
When the battery is depleted, have the
vehicle inspected at your Lexus dealer.
●Some systems may require initialization.
(  P.490)
■When removing the battery terminals
When the battery terminals are removed,
the information stored in the ECU is
cleared. Before removi ng the battery termi-
nals, contact your Lexus dealer.
■Charging the battery
The electricity stored in the battery will dis-
charge gradually even when the vehicle is
not in use, due to natural discharge and the
draining effects of certain electrical appli-
ances. 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 recharging or replacing the bat-
tery
●In some cases, it may not be possible to
unlock the doors using the smart access
system with push-button start when the
battery is discharged. Use the wireless
remote control or the mechanical key to
lock or unlock the doors.
●The engine may not start on the first
attempt after the battery has recharged
but will start normally after the second
attempt. This is not a malfunction.
●The engine switch mode is memorized by
the vehicle. When the battery is recon-
nected, the system will return to the
mode it was in before the battery was dis-
charged. Before disconnecting the bat-
tery, turn the engine switch off.
If you are unsure wh at mode the engine
switch was in before the battery dis-
charged, be especially careful when
reconnecting the battery.
■When replacing the battery
●Use a Central Degassing type battery
(European Regulations).
●Use a battery with the same case size as
the previous battery and an equivalent
20 hour rate capacity (20HR) or greater.
• If the sizes differ, the battery cannot be properly secured.
• If the 20 hour rate capacity is low, even if
the time period where the vehicle is not
used is a short time, the battery may dis-
charge and the engine may not be able to
start.

4798-2. Customization
8
Vehicle specifications
*:If equipped
■Door lock (P.102, 106, 442)
Route guidance to destina-
tion/street name
*OnOff—O——
Driving support system dis-
playOnOff—O——
Compass*OnOff—O——
Audio system operation sta-
tusOnOff—O——
FunctionDefault settingCustomized set-
ting
Unlocking using a mechani-
cal key
Driver’s door
unlocked in one step, all doors
unlocked in two step
All doors
unlocked in one step
———O
Automatic door locking func-
tionShift position
linked door lock- ing operationOff
O——OSpeed linked door locking operation
Automatic door unlocking
function
Shift position linked door
unlocking opera- tionOff
O——ODriver’s door linked door
unlocking opera- tion
Locking/unlocking of the
trunk when all doors are
locked/unlocked
OnOff———O
FunctionDefault settingCustomized set-tingABCD
ABCD

4808-2. Customization
■Smart access system with push-button start and wireless remote control
( P.102, 113)
■Smart access system with push-button start ( P.102, 113)
■Wireless remote control ( P.100, 102, 106)
FunctionDefault settingCustomized set-
ting
Operating signal (Buzzers)5OffO——O1 to 7
Operation signal (Emer-
gency flashers)OnOffO——O
Time elapsed before auto-
matic door lock function is
activated if door is not
opened after being unlocked
60 seconds
Off
O——O30 seconds
120 seconds
Open door warning buzzerOnOff———O
FunctionDefault settingCustomized set-ting
Smart access system with
push-button startOnOff———O
Smart door unlockingDriver’s doorAll the doorsO——O
Time elapsed before unlock-
ing all the door when gripping
and holding the driver’s door
handle
2 seconds
Off
———O1.5 seconds
2.5 seconds
Number of consecutive door
lock operations2 timesAs many as desired———O
FunctionDefault settingCustomized set- ting
Wireless remote controlOnOff———O
Unlocking operation
Driver’s door
unlocked in one step, all doors
unlocked in two step
All doors
unlocked in one step
O——O
ABCD
ABCD
ABCD

4818-2. Customization
8
Vehicle specifications
■Trunk (P.106)
*:If equipped
■Front seats ( P.121)
*:If equipped
■Power rear seats* ( P.128)
Trunk unlocking operationPress and hold
(short)
One short press
———O
Push twice
Press and hold (long)
Off
Theft deterrent panic modeOnOff———O
Reservation lockOnOffO——O
FunctionDefault settingCustomized set- ting
Hands Free Power Trunk Lid
(kick sensor)
*OnOff—O——
FunctionDefault settingCustomized set-ting
Driver’s seat position linked
head restraint height opera-
tion
*OffOn———O
FunctionDefault settingCustomized set-ting
Automatic rear seat opera-
tion (door-linked rear seat
return function and
shift-linked rear seat reclining
function)
OnOff——O—
FunctionDefault settingCustomized set- tingABCD
ABCD
ABCD
ABCD

4828-2. Customization
*:If equipped
■Driving position memory (P.133)
■Outside rear view mirrors ( P.151)
Door linked rear seat with
ottoman seatback position for
exiting
*
More upright
than upright posi- tion
Upright position——O—
Shift-linked rear seat reclining
functionOnOff———O
FunctionDefault settingCustomized set-ting
Selecting doors linked to the
memory recall functionDriver’s doorAll doors———O
Driver’s seat slide movement
when exiting the vehicleFullOffO——OPartial
Driver’s seat height move-
ment when exiting the vehicleOffFullO——OPartial
Steering wheel movementTilt only
Off
O——OTelescopic only
Tilt and telescopic
FunctionDefault settingCustomized set-ting
Automatic mirror folding and
extending operationLinked to the
locking/ unlock- ing of the doorsOff
———OLinked to opera-
tion of the engine switch
FunctionDefault settingCustomized set- tingABCD
ABCD
ABCD