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6-3. Do-it-yourself maintenance
Maintenance and care
The 12-volt battery is located on the
right-hand side of the trunk.
Q Before recharging
When recharging, the 12-volt battery pro-
duces hydrogen gas which is flammable
and explosive. Therefore, observe the fol-
lowing precautions before recharging:
O If recharging with the 12-volt battery
installed on the vehicle, be sure to dis-
connect the ground cable.
O Make sure the power switch on the char-
ger is off when connecting and discon-
necting the charger cables to the 12-volt
battery.
Q After recharging/reconnecting the 12-
volt battery
O The hybrid system may not start. Follow
the procedure below to initialize the sys-
tem.
1 Shift the shift lever to P.
2 Open and close any of the doors.
3 Restart the hybrid system.
O Unlocking the doors using the smart
entry & start system may not be possible
immediately after reconnecting the 12-
volt battery. If this happens, use the wire-
less remote control or the mechanical
key to lock/unlock the doors.
O Start the hybrid system with the power
switch in ACCESSORY mode. The
hybrid system may not start with the
power switch turned off. However, the
hybrid system will operate normally from
the second attempt.
O The power switch mode is recorded by
the vehicle. If the 12-volt battery is recon-
nected, the vehicle will return the power
switch mode to the status it was in before
the 12-volt battery was disconnected.
Make sure to turn off the power switch
before disconnect 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 hybrid system will not start even after
multiple attempts at all methods above,
contact any authorized Lexus retailer or
Lexus authorized repairer, or any reliable
repairer.
12-volt battery
Location
Q Chemicals in the 12-volt battery
The 12-volt battery contains poisonous
and corrosive sulfuric acid and may pro-
duce hydrogen gas which is flammable
and explosive. To reduce the risk of
death or serious injury, take the following
precautions while working on or near the
12-volt battery:
O Do not cause sparks by touching the
12-volt battery terminals with tools.
O Do not smoke or light a match near the
12-volt battery.
O Avoid contact with eyes, skin and
clothes.
O Never inhale or swallow electrolyte.
O Wear protective safety glasses when
working near the 12-volt battery.
O Keep children away from the 12-volt
battery.
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