Toyota YARIS F User Manual page 226

2-1. Driving procedures
 Turning the key from "ACC" to "LOCK"
Shift the shift lever to P (vehicles with a Multidrive), E, M or R (vehi-
cles with a multi-mode manual transmission) or N (vehicles with a
manual transmission). (P. 255, 260, 265)
 If the engine does not start
The engine immobilizer system may not have been deactivated. (P. 155)
Contact any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional.
 When the steering lock cannot be released
 Key reminder function
A buzzer sounds if the driver's door is opened while the engine switch is in
the "ACC" or "LOCK" position to remind you to remove the key.
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YARIS_F (including HV)_WE_52C79E
Push in the key and turn it to the "LOCK"
position.
When starting the engine, the engine
switch may seem stuck in the "LOCK"
position. To free it, turn the key while turn-
ing the steering wheel slightly left and
right.