Toyota 2012 Yaris Hatchback Owner's Manual page 186

3-4. Using the storage features
Rear
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Remove the separator
CAUTION
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Items unsuitable for the cup holder
Do not place anything other than cups or beverage cans in the cup holders.
Other items may be thrown out of the holders in the event of an accident or
sudden braking, causing injury. If possible, cover hot drinks to prevent burns.
206
Pull the separator up.
Cup holders