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7-2. Steps to take in an emergency
6
Open and close any of the doors of
your vehicle with the power switch
off.
7
Maintain the engine speed of the
second vehicle and start the hybrid
system of your vehicle by turning
the power switch to ON mode.
8
Make sure the "READY" indicator
comes on. If the indicator does not
come on, contact your Lexus
dealer.
9
Once the hybrid system has
started, remove the jumper cables
in the exact reverse order from
which they were connected.
10
Close the exclusive jump starting
terminal cover and install the fuse
box cover and engine compart-
ment cover.
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 and the audio sys-
●
tem 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 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.
●
LS500h_OM_OM50F42U_(U)
(→P.495)
■
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.
■
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 the 12-volt battery has
recharged but will start normally after the
second attempt. This is not a malfunction.
●
The power switch mode is memorized by
the vehicle. When the 12-volt battery is
reconnected, the system will return to the
mode it was in before the 12-volt battery
was discharged. Before disconnecting
the 12-volt battery, turn the power switch
off.
If you are unsure what mode the power
switch was in before the 12-volt battery
discharged, be especially careful when
reconnecting the 12-volt battery.
When replacing the 12-volt battery
■
●
Use a Central Degassing type 12-volt
battery (European Regulations).
●
Use a 12-volt battery with the same case
size as the previous 12-volt battery and an
epuivalent 20 hour rate capacity (20HR)
or greater.
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