Toyota SIENNA 2022 Manual page 355

5-1. Using the air conditioning system and defogger
Switching between the
individual and synchro-
nous modes
The air conditioning system can
be switched between the indi-
vidual and synchronous modes.
The mode switches each time
the "SYNC" switch is operated
on the air conditioning operation
panel or the "SYNC" is selected
on the control screen.
Vehicles with "3-ZONE" mode

 In the individual mode, the
temperature for the driver,
front passenger, and rear
seats can be adjusted sepa-
rately.
 In the synchronous mode, the
driver's side temperature con-
trol switch can be used to
adjust the temperature for the
driver, front passenger, and
rear seats.
• To adjust the temperature for the
front passenger seat separately
from other seats: operate the
front passenger's side tempera-
ture control switch. (The "SYNC"
of "PASSSYNC" display disap-
pears)
• To adjust the temperature for the
rear seats separately from the
front seats: when the synchro-
nous mode is on, operate the
"REAR" switch. Then, operate the
driver's side or front passenger's
side temperature control switch
upwards to increase the rear
seats temperature and down-
wards to decrease the rear seats
temperature. (The "SYNC" of
"REAR SYNC" display on the
front air conditioning operation
panel and "SYNC" display on the
rear air conditioning operation
panel disappear)
Vehicles with "4-ZONE" mode

 In the individual mode, the
temperature for the driver,
front passenger, left-hand
side rear seats, and right-
hand side rear seats can be
adjusted separately by the
corresponding temperature
control switch on the front and
rear air conditioning operation
panels.
 In the synchronous mode, the
driver's side temperature con-
trol switch can be used to
adjust the temperature for the
driver, front passenger, left-
hand side rear seats, and
right-hand side rear seats.
• To adjust the temperature for the
front passenger seat separately
from other seats: operate the
front passenger's side tempera-
ture control switch. (The "SYNC"
of "PASSSYNC" display disap-
pears)
• To adjust the temperature for the
rear seats separately from the
front seats: when the synchro-
nous mode is on, operate the
"REAR" switch. Then, operate the
driver's side temperature control
switch upwards to increase the
rear seats temperature and
downwards to decrease the rear
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