Lexus LS 500 2019 Owner's Manual page 321

in a rear seat when in automatic
S-FLOW mode.
Depending on the set temperature, opera-
tion in S-FLOW mode may not change as
described above.
When certain conditions are met and pri-
ority is given to the driver's seat only, the
temperature indicator for the front passen-
ger side will turn off.
How the system judges if a passenger is in
the vehicle: P.321
The following S-FLOW modes are
available:
Automatic S-FLOW mode

In this mode, when a passenger is
judged to be in a rear seat, S-FLOW
mode will be automatically disabled.
(P.321)
The indicator will illuminate on the air con-
ditioning control screen when S-FLOW
mode is enabled.
To enable/disable S-FLOW mode and
enter manual S-FLOW mode, select the
S-FLOW mode switch.
How the system judges if a passenger is in
the vehicle: P.321
Manual S-FLOW mode

When the S-FLOW mode switch is
selected, S-FLOW mode will be manu-
ally enabled/ disabled.
The indicator will illuminate on the air con-
ditioning control screen when S-FLOW
mode is enabled.
In manual S-FLOW mode, as the system
does not judge if a passenger is in a rear
seat.
If the rear air conditioning control screen
on the Rear Multi Operation Panel (if
equipped) is operated, S-FLOW mode will
LS500_OM_(U)_1810
5-3. Using the air conditioning system and defogger
automatically be disabled
How the system judges if a passenger is
■
in the vehicle when in S-FLOW mode
In S-FLOW mode, the system judges if a
passenger is in the vehicle as follows:
● Front passenger seat: A passenger is
judged to be in the front passenger seat
when the system detects an object on the
front passenger seat, fastening of the
front passenger seat belt, changing of the
set temperature for the front passenger
seat, changing of the air outlets for the
front passenger seat or the opening and
closing of the front passenger door.
(However, when only opening and clos-
ing of the front passenger door is
detected, the system will judge that a pas-
senger is not in the front passenger seat
after the vehicle speed reaches approxi-
mately 12 mph (20 km/h) or more.)
● Rear seats: A passenger is judged to be in
a rear seat when the system detects the
opening and closing of a rear door (auto-
matic S-FLOW mode only) or the opera-
tion of the rear air conditioning control
screen on the Rear Multi Operation
Panel.
■ Operation of automatic S-FLOW mode
When the system is operating in automatic
S-FLOW mode, if the system detects the
opening and closing of a rear door or the
operation of the rear air conditioning con-
trol screen on the Rear Multi Operation
Panel, S-FLOW mode will be disabled. To
enable S-FLOW mode, select the S-FLOW
mode switch. (In this case, the system will
operate in manual S-FLOW mode.)
■ Changing from manual S-FLOW mode
to automatic S-FLOW mode
1
Select the S-FLOW mode switch to dis-
able S-FLOW mode.
2
Turn the engine switch off.
3 After 60 minutes have elapsed, change
the engine switch to ON mode.
321
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