Toyota Avalon 2015 - If the 12-volt battery is discharged; The following procedures may be used to start the hybrid system if the 12-volt battery is discharged.

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7-2. Steps to take in an emergency
AVALON_HV_U (OM41457U)
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your vehicle by following the
steps below.
Open the trunk lid and remove
the 12-volt battery cover.
In the event that the trunk opener
cannot be used, use the loop of
wire to unlock the trunk. (P. 134)
Connect the jumper cables according to the following procedure:
Connect a positive jumper cable clamp to the positive (+) battery
terminal on your vehicle.
Connect the clamp on the other end of the positive cable to the
positive (+) battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery termi-
nal on the second vehicle.
If the 12-volt battery is discharged
The following procedures may be used to start the hybrid sys-
tem if the 12-volt battery is discharged.
You can also call your Toyota dealer or a qualified repair shop.
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