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 > Power Mirror Control System: AUTO Power Retract Mirrors do not operate
DESCRIPTION
The outer mirror switch assembly sends a mirror auto retract/return signal to
the main body ECU (multiplex network body ECU) when the retractable outer mirror
switch on the outer mirror switch assembly is in the AUTO position. The main body
ECU (multiplex network body ECU) retract ...
Toyota CH-R Service Manual > Rear Door Window Frame Moulding: Installation
INSTALLATION
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE
1. INSTALL REAR DOOR REAR WINDOW FRAME MOULDING
(a) Using an air riveter or hand riveter with a nose piece, install the rear
...