2021 LEXUS LS500H cooling

14
LS500h_QG_U
There may be no engine sound or vibration even though the vehicle is able to move with the
“READY” indicator is illuminated. For safety, apply the parking brake and make sure to shift
the shift position to P when parked.
The following sounds or vibrations may occur when the hybrid system is operating and are
not a malfunction:
● Motor sounds may be heard from the engine compartment.
● Relay operating sounds such as a snap or so ft clank will be emitted from the hybrid bat-
tery (traction battery), behind the rear se ats, when the hybrid system is started or
stopped.
● Sounds may be heard from the hybrid battery (traction battery) behind the rear seats
when the hybrid syst em starts or stops.
● Sounds from the hybrid system may be heard when the trunk lid is open.
● Sounds may be heard from the transmission when the gasoline engine starts or stops,
when driving at low speeds, or during idling.
● Engine sounds may be heard when accelerating sharply.
● Sounds may be heard due to regenerative braking when the brake pedal is depressed or
as the accelerator pedal is released.
● Vibration may be felt or sounds may be hear d when the gasoline engine starts or stops.
● Cooling fan sounds may be heard from the air intake vents on the both sides of the rear
seatback.
When the vehicle has run out of fuel and the hybrid system cannot be started, refuel the
vehicle with at least enough gasoline to make the low fuel level warning light go off. If there is
only a small amount of fuel, the hybrid system may not be able to start. (The standard amount
of fuel is about 3.4 gal. [13 L, 2.8 Imp. gal.], when the vehicle is on a level su rface. This value
may vary when the vehicle is on a slope. Add extra fuel when the vehicle is inclined.)
A message is automatically disp layed when a malfunction occurs in the hybrid system or an
improper operation is attempted.
If a warning message is shown on the multi-
information display, read the message and
follow the instructions.
Sounds and vibrations specific to a hybrid vehicle
Running out of fuel
Hybrid warning message

46
LS500h_QG_U
3Eco drive mode
Helps the driver accelerate in an eco-friendly ma nner and improve fuel economy
through moderate throttle characteristics an d by controlling the operation of the air
conditioning system (heating/cooling).
When in comfort mode, if the driving mode select switch is turned backward, the Eco
drive mode indicator comes on.
4Sport mode
• Sport S mode Controls the hybrid system to provide quick, powerful acceleration. This mode is suit-
able for when agile driving re sponse is desired, such as when driving on roads with
many curves.
When not in Sport S mode, if the driving mo de select switch is turned forward, the
Sport S mode indicator comes on.
• Sport S+ mode Helps to ensure steering performance and driving stability by simultaneously con-
trolling the steering and suspension in addi tion to the hybrid system. Suitable for
sportier driving.
When in Sport S mode, if the driving mode se lect switch is turned forward, the Sport
S+ mode indicator comes on.

71
LS500h_QG_U
■Option control screen
Select on the sub menu to display the option control screen.
The functions can be switched on and off.
When the function is on, the indi cator illuminates on the screen.
Vehicles with DUAL-ZONE climate con-
trol 
Vehicles with 4-ZONE climate control
Set Lexus Climate Concierge ( P.68)
Adjusting the temperature for driver and
passenger seats separately (“DUAL”
mode)
Set eco air conditioning mode
Cooling and dehumidi fication function
Select front seat concentrated airflow
mode (S-FLOW)
Prevent ice from building up on the
windshield and wiper blades (Wind-
shield wiper de-icer) (if equipped)
Removing pollen from the air (Micro
dust and pollen filter) Set Lexus Clim
ate Concierge
(  P.68)
Adjust the temperature for driver, pas-
senger and rear seats separately (“4-
ZONE” mode)
Set eco air conditioning mode
Cooling and dehumidification function
Select front seat concentrated airflow
mode (S-FLOW)
Prevent ice from building up on the
windshield and wiper blades (Wind-
shield wiper de-icer) (if equipped)
Removing pollen from the air (Micro
dust and pollen filter)
A
B
C
D
E
F
G
A
B
C
D
E
F
G

72
LS500h_QG_U
■Side display
1
Press the automatic mode switch.
2Press the outside/recirculated air mode switch to switch to automatic air intake mode.
3Adjust the temperature setting.
4To stop the operation, press the off switch.

Vehicles with DUAL-ZONE climate con-
trol 
Vehicles with 4-ZONE climate control
Display the front seat heaters/front seat
ventilators control screen
Adjust the fan speed setting
Select the air flow mode
Set cooling and dehumidification func-
tion on/off
Select front seat concentrated airflow
mode (S-FLOW)
Adjusting the temperature for driver and
passenger seats se parately (“DUAL”
mode)
Set Lexus Climate Concierge ( P.68)Display the front seat heaters/front
seat ventilators
control screen
Select the left side seat air flow mode
Adjust the fan speed setting
Select the right side seat air flow mode
Set cooling and dehumidification func-
tion on/off
Select front seat concentrated airflow
mode (S-FLOW)
Adjust the temperature for driver, pas-
senger and rear seats separately (“4-
ZONE” mode)
Set Lexus Climate Concierge
( P.68)
Using automatic mode
A
B
C
D
E
F
G
A
B
C
D
E
F
G
H