Toyota Yaris Sedan 2008 Quick Reference Manual page 289

4-3. Do-it-yourself maintenance
High mounted stoplight (vehicles without the rear spoiler)
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276
Remove the light bulb.
Stop/tail and rear side marker
lights
Rear turn signal light
Back-up light
Disengage the claws.
Pull and remove the high
mounted stoplight.
Unplug the connector.