Toyota 2013 Avalon Hybrid Owner's Manual page 338

■
Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flam-
mable and explosive. Therefore, observe the following precautions before
recharging:
●
If recharging with the 12-volt battery installed on the vehicle, be sure to dis-
connect the ground cable.
●
Make sure the power switch on the charger is off when connecting and dis-
connecting the charger cables to the 12-volt battery.
■
After recharging/reconnecting the 12-volt battery
●
The hybrid system may not start. Follow the procedure below to initialize the
system.
1 Shift the shift lever to P.
2
Open and close any of the doors.
3 Restart the hybrid system.
●
Unlocking the doors using the smart key system may not be possible imme-
diately after reconnecting the 12-volt battery. If this happens, use the wire-
less remote control or the mechanical key to lock/unlock the doors.
●
Start the hybrid system with the power switch in ACCESSORY mode. The
hybrid system may not start when the power switch turned from off. How-
ever, 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
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 disconnect the 12-volt battery. Take extra care
when connecting the 12-volt battery if the power switch mode prior to dis-
charge is unknown.
If the system will not start even after multiple attempts at all methods above,
contact your Toyota dealer.
AVALON_HV_U (OM41451U)
6-3. Do-it-yourself maintenance
359
6