Toyota Prius Owner's Manual page 51

CAUTION

Hybrid battery (traction battery)
Your vehicle contains a sealed nickel-metal hydride battery. If disposed of
improperly, it is hazardous to the environment and there is a risk of severe
burns and electrical shock that may result in death or serious injury.
NOTICE

Hybrid battery (traction battery) air vent

Do not put foreign objects near the air vent. The hybrid battery (traction
battery) may overheat and be damaged.

Clean the air vent regularly to prevent the hybrid battery (traction battery)
from overheating.

Do not wet or allow foreign substances to enter the air vent as this may
cause a short circuit and damage the hybrid battery (traction battery).

Do not carry large amounts of water such as water cooler bottles in the
vehicle. If water spills onto the hybrid battery (traction battery), the battery
may be damaged. Have the vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and equipped professional.

If the rear seat belt becomes separated from the guide (P. 112), it could
obstruct the hybrid battery (traction battery) air vent. Set the rear seat belt
into the guide to use.
PRIUS_OM_OM47A19E_(EE)
1-1. Hybrid system
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