Lexus 2013 ES350 Owner's Manual page 784

Starting the hybrid system when the 12-volt battery is discharged
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The hybrid system cannot be started by push-starting.
To prevent 12-volt battery discharge
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Turn off the headlights and the audio system while the hybrid system is off.
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Turn off any unnecessary electrical components when the vehicle is running at a
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low speed for an extended period, such as in heavy traffic.
Charging the 12-volt battery
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The electricity stored in the 12-volt battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of certain elec-
trical 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
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Make sure the key is not inside the vehicle when recharging or replacing the 12-volt
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battery to prevent the doors from being locked with the key left inside the vehicle
when the alarm operates.
In some cases, it may not be possible to unlock the doors using the smart access
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system with push-button start when the 12-volt battery is discharged. Use the wire-
less remote control or the mechanical key to lock or unlock the doors.
The hybrid system may not start on the first attempt after the 12-volt battery has
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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
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is reconnected, the system will return to the mode it was in before the 12-volt bat-
tery 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.
ES350 300h_OM_OM33A01U_(U)
7-2. Steps to take in an emergency
I n f o r ma t i o n P r o v i d e d b y :
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