575
6-3. Do-it-yourself maintenance
6
Maintenance and care
● 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
normally from the second attempt.
● The power switch mode is recorded by
the vehicle. If the 12-volt battery is dis-
connected and reconnected, 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 the 12-volt
battery being disconnected is unknown.
If the hybrid system will not start even after
multiple attempts at all the methods above,
contact your Lexus dealer.
*
: ACC mode can be enabled/disabled on
the customize menu. (P.683)
■ 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:
● 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
battery in a garage or closed room
where there is insufficient ventilation.
■ How to recharge the 12-volt battery
Only perform a slow charge (5 A or
less). The 12-volt battery may explode if
charged at a quicker rate.
■ Emergency measures regarding
electrolyte
● If electrolyte gets in your eyes
Flush your eyes with clean water for at
least 15 minutes and get immediate
medical attention. If possible, continue
to apply water with a sponge or cloth
while traveling to the nearest medical
facility.
● If electrolyte gets on your skin
Wash the affected area thoroughly. If
you feel pain or burning, get medical
attention immediately.
● If electrolyte gets on your clothes
It can soak through clothing on to your
skin. Immediately take off the clothing
and follow the procedure above if nec-
essary.
● If you accidentally swallow electrolyte
Drink a large quantity of water or milk.
Get emergency medical attention
immediately.
■ When replacing the 12-volt battery
Use a 12-volt battery designed for this
vehicle. Failure to do so may cause gas
(hydrogen) to enter the passenger com-
partment, causing a fire or explosion.
For replacement of the 12-volt battery,
contact your Lexus dealer.
■ When there is insufficient 12-volt bat-
tery fluid
Do not use if there is insufficient fluid in
the 12-volt battery. There is a possible
danger that the 12-volt battery may
explode.
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