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 > Rear Door Lock: Components
COMPONENTS
ILLUSTRATION
*1
REAR DOOR INSIDE HANDLE BEZEL PLUG
*2
REAR DOOR REAR FRAME BRACKET
*3
REAR DOOR TRIM BOARD SUB-ASSEMBLY
*4
REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY WITH REAR DOOR ARMREST B ...
Toyota CH-R Service Manual > Fog Light Assembly: Removal
REMOVAL
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. REMOVE FRONT BUMPER ASSEMBLY
Click here
2. REMOVE FOG LIGHT ASSEMBLY
(a) Remove the 2 screws.
...