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411
7-3. Do-it-yourself maintenance
COROLLA HV_U
7
Maintenance and care
Check the 12-volt battery as fol-
lows.
■
12-volt battery exterior
Make sure that the 12-volt bat-
tery terminals are not corroded
and that there are no loose con-
nections, cracks, or loose
clamps.
Terminals
Hold-down clamp
■
Before recharging
When recharging, the 12-volt bat-
tery produces hydrogen gas which
is flammable and explosive. There-
fore, observe the following precau-
tions before recharging:
●
If recharging with the 12-volt bat-
tery installed on the vehicle, be
sure to disconnect the ground
cable.
●
Make sure the power switch on
the charger is off when connecting
and disconnecting the charger
cables to the 12-volt battery.
■
After recharging/reconnecting
the 12-volt battery
●
Unlocking the doors using the
smart key system may not be pos-
sible immediately after reconnect-
ing the 12-volt battery. If this
happens, use the wireless remote
control or the mechanical key to
lock/unlock the doors.
●
Start the hybrid system with the
power switch in ACC. The hybrid
system may not start with the
power switch turned off. However,
the hybrid system will operate nor-
mally from the second attempt.
●
The power switch mode is
recorded by the vehicle. If the
12-volt battery is reconnected, the
vehicle will return the power
switch mode to the status it was in
before the 12-volt battery was dis-
connected. Make sure to turn off
the power before disconnecting
the 12-volt battery. Take extra
care when connecting the 12-volt
battery if the power switch mode
prior to discharge is unknown.
If the system will not start even after
multiple attempts, contact your
Toyota dealer.
NOTICE
■
If the fluid level is low or high
It is normal for the brake fluid level
to go down slightly as the brake
pads wear out or when the fluid
level in the accumulator is high.
If the reservoir needs frequent
refilling, there may be a serious
problem.
12-volt battery
WARNING
■
Chemicals in the 12-volt bat-
tery
The 12-volt battery contains poi-
sonous and corrosive sulfuric acid
and may produce hydrogen gas
which is flammable and explosive.
To reduce the risk of death or seri-
ous injury, take the following pre-
cautions while working on or near
the 12-volt battery:
●
Do not cause sparks by touch-
ing the 12-volt battery terminals
with tools.
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