648
7-2. Steps to take in an emergency
7 Open and close any of the doors of
your vehicle with the power switch
off.
8 Maintain the engine speed of the
second vehicle and start the hybrid
system of your vehicle by turning
the power switch to ON.
9 Make sure the “READY” indicator
comes on.
If the indicator light does not come on,
contact your Lexus dealer.
10 Once the hybrid system has
started, remove the jumper cables
in the exact reverse order from
which they were connected.
To install the engine cover, conduct the
removal procedure in reverse. After
installing, check that the fixed pins are
inserted securely.
11 Close the exclusive jump starting
terminal cover, and reinstall the
fuse box cover to its original posi-
tion.
Once the hybrid system starts, have
the vehicle inspected at your Lexus
dealer as soon as possible.
■ Starting the hybrid system when the 12-
volt battery is discharged
The hybrid system cannot be started by
push-starting.
■ To prevent 12-volt battery discharge
● Turn off the headlights, the air condition-
ing system, the audio system, etc. while
the hybrid system is off.
● Turn off any unnecessary electrical com-
ponents when the vehicle is running at a
low speed for an extended period, such
as in heavy traffic.
● When ACC customization is in off,
power is still provided to the multimedia
system even though the power switch is
off.
To turn off the multimedia system, use the
multimedia system power switch. For
details, refer to the “MULTIMEDIA
OWNER’S MANUAL”.
■ When the 12-volt battery is removed or
discharged
● Information stored in the ECU is cleared.
When the 12-volt battery is depleted,
have the vehicle inspected at your Lexus
dealer.
● Some systems may require initialization.
(P.694)
■ When removing the 12-volt battery ter-
minals
When the 12-volt battery terminals are
removed, the information stored in the
ECU is cleared. Before removing the 12-
volt battery terminals, contact your Lexus
dealer.
■ When removing the 12-volt battery:
P.574
■ Charging the 12-volt battery
The electricity stored in the 12-volt battery
will discharge gradually even when the
vehicle is not in use, due to natural dis-
charge and the draining effects of certain
electrical appliances. If the vehicle is left for
a long time, the 12-volt battery may dis-
charge, and the hybrid system may be
unable to start. (The 12-volt battery
recharges automatically while the hybrid
system is operating.)
■ When recharging or replacing the 12-
volt battery
● In some cases, it may not be possible to
unlock the doors using the smart access
system with push-button start when the
12-volt battery is discharged. Use the
wireless remote control or the mechani-
cal key to lock or unlock the doors.
● The hybrid system may not start on the
first attempt after reinstalling the 12-volt
battery. In that case, start the hybrid sys-
tem in the same manner as when the
electronic key does not operate properly
(P.645). This is not a malfunction, as
the hybrid system will start normally on
the second attempt.
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