Toyota C-HR 2019 Quick Reference Manual page 37

Tire Pressure Monitoring (warning) System (TPMS)
The tire pressure warning system can be selected on "
System rest initialization
Setup
The tire pressure detected by the tire pressure warning system can
Refer to the load label on the door jamb or the Owner's Manual for tire inflation
specifications.
If the tire pressure indicator flashes for more than 60 seconds and then remains on,
take the vehicle to your local Toyota dealer.
NOTE: The warning light may come on due to temperature changes or
changes in tire pressure from natural air leakage. If the system has not been
initialized recently, setting the tire pressures to factory specifications should
turn off the light.
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