Toyota 2014 Sienna Manual page 683

Battery
Check the battery as follows:
■
Battery exterior
Make sure that the battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.
■
Before recharging
When recharging, the battery produces hydrogen gas which is flammable
and explosive. Therefore, observe the following before recharging:
●
If recharging with the battery installed on the vehicle, be sure to discon-
nect the ground cable.
●
Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the battery.
SIENNA_OM_OM45483U_(U)
4-3. Do-it-yourself maintenance
Terminals
Hold-down clamp
4
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