The vehicle's keys have built-in transponder chips that prevent the engine from starting if a key has not been previously registered in the vehicle's on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
This system is designed to help prevent vehicle theft but does not guarantee absolute security against all vehicle thefts.
Vehicles without a smart key system: The indicator light flashes after the key has been removed from the engine switch to indicate that the system is operating.
The indicator light stops flashing after the registered key has been inserted into the engine switch to indicate that the system has been canceled.
Vehicles with a smart key system: The indicator light flashes after the engine switch has been turned off to indicate that the system is operating.
The indicator light stops flashing after the engine switch has been turned to ACCESSORY or IGNITION ON mode to indicate that the system has been canceled.

■System maintenance The vehicle has a maintenance-free type engine immobilizer system.
■Conditions that may cause the system to malfunction
Theft prevention labelsToyota CH-R Service Manual > Electric Parking Brake System: Electric Parking Brake AUTO Indicator Light Circuit
DESCRIPTION
Pulling the electric parking brake switch to the lock side for 5 seconds or more
changes the AUTO function (shift-linked function) to ON, and an AUTO Mode ON message
is displayed on the multi-information display in the combination meter.
Pressing the electric parking brake switch t ...
Toyota CH-R Owners Manual > Adjusting the seats: Rear seats
The seatbacks of the rear seats can be folded down.
Before folding down the seatbacks
Park the vehicle in a safe place.Apply the parking brake firmly and shift
the shift lever to P.
Adjust the position of the front seat and the angle of the seatback.Depending
on the position of the ...