Toyota Yaris: Warning/Indicator Lights and Warning Sounds / Message Indicated on Display
If a message is displayed in the center display, take appropriate
action (in a calm manner) according to the displayed message.
Display example

Take the appropriate action and verify that the warning light turns off.
KEY Warning Light
Take the appropriate action and verify that the warning light turns
off...
If the following messages are displayed in the center display, a vehicle
system may be malfunctioning. Stop the vehicle in a safe place and
contact your Toyota dealer...
Other information:
DESCRIPTION A transponder key amplifier is built into the certification ECU (smart key ECU assembly). When a communication malfunction occurs with the transponder key amplifier inside the certification ECU (smart key ECU assembly), this DTC is stored...
CAUTION / NOTICE / HINT HINT:
Replace parts related to the wireless door lock and smart key system according to the inspection procedure.
If the wireless door lock and smart key system does not operate, first check the customize item and make sure that the wireless door lock and smart key system is not turned off...
Categories
Before refueling, close all the doors, windows, and the liftgate/trunk
lid, and switch the ignition OFF.
To open the fuel-filler lid, pull
the remote fuel-filler lid release.

To remove the fuel-filler cap, turn it counterclockwise.
Attach the removed cap to the
inner side of the fuel-filler lid.
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