Toyota SIENNA 2022 Manual page 507

● The power switch mode is memo-
rized by the vehicle. When the 12-
volt battery is reconnected, the
system will return to the mode it
was in before the 12-volt battery
was discharged. Before discon-
necting the 12-volt battery, turn
the power switch off.
If you are unsure what mode the
power switch was in before the
12-volt battery discharged, be
especially careful when recon-
necting the 12-volt battery.
■ When replacing the 12-volt bat-
tery
● Use a 12-volt battery that con-
forms to European regulations.
Use a battery that the case size is
same as the previous one (LN2),
20 hours rate capacity (20HR) is
equivalent (60Ah) or greater, and
performance rating (CCA) is
equivalent (563A) or greater.
• If the sizes differ, the 12-volt bat-
tery 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 12-volt battery may discharge
and hybrid system may not be
able to start.
● Use a 12-volt battery with a han-
dle. If a 12-volt battery without a
handle is used, removal is more
difficult.
● When removing the 12-volt bat-
tery: P.420
● After exchanging, firmly attach the
following items to the exhaust hole
of the 12-volt battery.
• Use the exhaust hose that was
attached to the 12-volt battery
before exchanging and confirm
that it is firmly connected to the
hole section of the vehicle.
• Use the exhaust hole plug
included with the 12-volt battery
exchanged or the one installed on
the battery prior to the exchange.
(Depending on the 12-volt battery
to be exchanged, the exhaust hole
may be plugged.)
7-2. Steps to take in an emergency
For details, consult your Toyota
dealer.
C
B
A
Exhaust hole
B
Exhaust hose
C
Hole section of the vehicle
WARNING
■ When removing the battery
terminals
Always remove the negative (-)
terminal first. If the positive (+) ter-
minal contacts any metal in the
surrounding area when the posi-
tive (+) terminal is removed, a
spark may occur, leading to a fire
in addition to electrical shocks
and death or serious injury.
■ Avoiding 12-volt battery fires
or explosions
Observe the following precautions
to prevent accidentally igniting the
flammable gas that may be emit-
ted from the 12-volt battery:
● Make sure each jumper cable is
connected to the correct termi-
nal and that it is not unintention-
ally in contact with any other
than the intended terminal.
● Do not allow the other end of
the jumper cable connected to
the "+" terminal to come into
contact with any other parts or
metal surfaces in the area, such
as brackets or unpainted metal.
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