Toyota Yaris HV 2017 Manual page 217

Changing power switch positions
1
"LOCK"
The steering wheel is locked and
the key can be removed. (The key
can be removed only when the
shift lever is in P.)
2
"ACC"
Some electrical components such
as the audio system can be used.
3
"ON"
All electrical components can be
used.
4
"START"
For starting the hybrid system.
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4-2. Driving procedures
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