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12-volt battery
Location
The 12-volt battery is located in the
trunk under the luggage mat.
Removing the luggage mat: P.435
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:
If recharging with the 12-volt battery
●
installed on the vehicle, be sure to discon-
nect the ground cable.
Make sure the charger is off when con-
●
necting and disconnecting the charger
cables to the 12-volt battery.
After recharging/reconnecting the
■
12-volt battery
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
wireless remote control or the mechani-
cal key to lock/unlock the doors.
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.
The power switch mode is recorded by
●
the vehicle. If the 12-volt battery is recon-
LS500h_OM_General_OM50J66E
6-3. Do-it-yourself maintenance
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 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 Lexus dealer.
WARNING
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 pre-
cautions while working on or near the
12-volt battery:
Do not cause sparks by touching the
●
12-volt battery terminals with tools.
Do not smoke or light a match near the
●
12-volt battery.
Avoid contact with eyes, skin and
●
clothes.
Never inhale or swallow electrolyte.
●
Wear protective safety glasses when
●
working near the 12-volt battery.
Keep children away from the 12-volt
●
battery.
Where to safely charge the 12-volt
■
battery
Always charge the 12-volt battery in an
open area. Do not charge the 12-volt bat-
tery in a garage or closed room where
there is insufficient ventilation.
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