Toyota PRIUS 50 2020 Series Owner's Manual page 456

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7-2. Steps to take in an emergency
NOTICE
■
If "Have Traction Battery Inspected" is shown
The hybrid battery (traction battery) is scheduled to be inspected or
replaced. Have the vehicle inspected by your Toyota dealer immediately.
●
Continuing to drive the vehicle without having the hybrid battery (traction
battery) inspected will cause the hybrid system not to start.
●
If the hybrid system does not start, contact your Toyota dealer immedi-
ately.