Page 114 of 708
1141-2. Theft deterrent system
LS460/LS460L_GE (OM50G06E)
■Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
■Alarm-operated door lock
●When the alarm is operating, the doors are locked automatically to prevent intrud-
ers.
●Do not leave the key inside the vehicle when the alarm is operating, and make sure
the key is not inside the vehicle when recharging or replacing the battery.
●Vehicles with airbag manual on-off system:
The doors or trunk are unlocked using the
mechanical key.
●A person inside the vehicle opens a door,
the trunk or hood.
●The battery is recharged or replaced when
the vehicle is locked. ( P. 639)
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If mo dified or removed, the proper operation
of the system cannot be guaranteed.
Page 122 of 708

1222. Instrument cluster
LS460/LS460L_GE (OM50G06E)
Warning lights inform the driver of malfunctions in the indicated vehicle’s
systems.
*1: These lights come on when the engine switch is turned to IGNITION ON mode
to indicate that a system check is being performed. They will go off after the
engine is on, or after a few seconds. There may be a malfunction in a system if the
lights do not come on, or go off. Have the vehicle inspected by your Lexus dealer.
*2: The light flashes to indicate a malfunction.
Warning lights
*1Brake system warning light
( P. 605)
*1, 2Brake hold operated
indicator ( P. 607)
*1Charging system warning
light ( P. 606)
*1, 2Parking brake indicator
( P. 607)
*1Malfunction indicator
lamp ( P. 606)
*1Brake system warning light
( P. 607)
*1SRS warning light
( P. 606)
Open door warning light
( P. 608)
*1ABS warning light
( P. 606)
Low fuel level warning light
( P. 608)
*1Electric power steering
system warning light
( P. 606)
Seat belt reminder light
( P. 608)
*1, 2
(if equipped)
Pre-crash safety system
warning light ( P. 607)
*1
Master warning light
( P. 608)
*1
Slip indicator (P. 607)
*1
(if equipped)
Tire pressure warning light
( P. 609)
Page 162 of 708
1623-2. Opening, closing and locking the doors
LS460/LS460L_GE (OM50G06E)
■Battery-saving function
In the following circumstances, the entry function is disabled in order to prevent the
vehicle battery from discharging and the electronic key battery from depleting.
●When the entry function has not been used for 30 days or more
●When the electronic key has been left within approximately 2 m (6 ft.) of the vehi-
cle for 10 minutes or more
The system will resume operation when
●The vehicle is locked using the door handle lock switch when carrying the elec-
tronic key on your person.
●The vehicle is locked/unlocked using the wireless remote control function.
( P. 177)
●The vehicle is locked/unlocked using the mechanical key. (P. 631)
Page 166 of 708

1663-2. Opening, closing and locking the doors
LS460/LS460L_GE (OM50G06E)
■Electronic key battery depletion
●The standard battery life is 1 to 2 years. (The card key battery life is about a year and
a half.)
●If the battery is low, an alarm will sound in the cabin when the engine is started or
stopped. ( P. 158)
●The battery becomes depleted even if the electronic key is not used because the
key always receives radio waves. If the smart entry & start system or the wireless
remote control does not operate, or the detection area becomes smaller, the bat-
tery may be depleted. Replace the battery when necessary. ( P. 575)
●To avoid serious deterioration, do not leave the electronic key within 1 m (3 ft.) of
the following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
• Table lamps
• Induction cookers
■When the electronic key battery is fully depleted
P. 575
■Customization
Settings (e. g. smart entry & start system) can be changed.
(Customizable features P. 667)
Page 551 of 708

5516-3. Do-it-yourself maintenance
6
Maintenance and care
LS460/LS460L_GE (OM50G06E)
■Before recharging
When recharging, the battery produces hydrogen gas which is flammable and
explosive. Therefore, observe the following before recharging:
●If recharging with the battery installed on the vehicle, be sure to disconnect the
ground cable.
●Make sure the power switch on the charger is off when connecting and discon-
necting the charger cables to the battery.
■After recharging/reconnecting the battery
The engine may not start. Follow the procedure below to initialize the system.
Shift the shift lever to P.
Open and close any of the doors.
Restart the engine. (If the engine does not start first time, repeat the procedure.)
If the engine will not start even after multiple attempts at the above method, contact
your Lexus dealer.
1
2
3
CAUTION
■Chemicals in the battery
Batteries contain poisonous and corrosive sulfuric acid and may produce hydro-
gen gas which is flammable and explosive. To reduce the risk of death or serious
injury, take the following precautions while working on or near the battery:
●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 safety 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.
Page 552 of 708

5526-3. Do-it-yourself maintenance
LS460/LS460L_GE (OM50G06E)
CAUTION
■Emergency measures regarding electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immediate medi-
cal attention. If possible, continue to apply water with a sponge or cloth while
traveling to the nearest medical facility.
●If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical atten-
tion immediately.
●If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the clothing and
follow the procedure above if necessary.
●If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Get emergency medical attention imme-
diately.
NOTICE
■When recharging the battery
Never recharge the battery while the engine is operating. Also, be sure all acces-
sories are turned off.
■When adding distilled water
Avoid overfilling. Water spilled during battery recharging may cause corrosion.
■When replacing the battery
Replace the battery with a battery of the same size.
Installing a battery of a different size will prevent the cover from being properly
installed over the battery. This may cause water to enter the engine compartment
when it rains or the vehicle is washed, resulting in a malfunction.
For more information about replacing the battery, contact your Lexus dealer.
Page 606 of 708

6067-2. Steps to take in an emergency
LS460/LS460L_GE (OM50G06E)
The following warning indicates the possibility of damage to the vehicle
that may lead to an accident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer.
Failure to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately.
Stop the vehicle immediately.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
Have the vehicle inspected by your Lexus dealer immediately.
Warning lightWarning light/Details
Malfunction indicator lamp
Indicates a malfunction in:
• The emission control system (on some models);
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system (if
equipped);
• The seat belt pretensioner system; or
• The active head restraints system
ABS warning light
Indicates a malfunction in:
•The ABS; or
• The brake assist system
Electric power steering system warning light (warning buzzer)
Indicates a malfunction in the EPS (Electric Power Steering)
system
Page 616 of 708

6167-2. Steps to take in an emergency
LS460/LS460L_GE (OM50G06E)
■Warning message in radar cruise mode (if equipped)
In the following cases, the warning message may not be displayed even if vehicle-to-
vehicle distance decreases:
●When your vehicle and the vehicle ahead are traveling at the same speed or the
vehicle ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed
■The LKA (Lane-Keeping Assist) lane de parture warning function (if equipped)
In the following cases, the warning message will not be displayed even if a lane line is
crossed.
●When the vehicle speed deviates from the operating range of the LKA system
functions
●When the lane lines cannot be recognized
●When the steering wheel is turned as far as necessary to cause the vehicle to
change lanes
■System warning lights
The master warning light does not come on or flash in the following cases. Instead, a
separate system warning light will come on or flash along with the message shown
on the multi-information display.
●Malfunction of the brake system
The brake system warning light (red indicator) comes on. ( P. 605)
●Malfunction of the electronically controlled brake system or electric parking brake
The brake system warning light (yellow indicator) comes on. ( P. 607)
●Malfunction of the ABS
The ABS warning light comes on. ( P. 606)
●Malfunction of the charging system
The charging system warning light comes on. ( P. 606)
●Indicates that a door or the trunk is not fully closed
The open door warning light comes on. ( P. 608)
●High engine coolant temperature
The needle of the engine coolant temperature gauge enters the red zone.
( P. 641)