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 > Refrigerant(for Hfc-134a(r134a)): Replacement
REPLACEMENT
PROCEDURE
1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM
(a) Start the engine.
(b) Operate the compressor under the conditions shown below:
Item
Condition
Operating time
3 minutes or more
Temperature setting
...
Toyota CH-R Service Manual > Seat: Front Power Seat Control System
Parts Location
PARTS LOCATION
ILLUSTRATION
*1
INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
- P/SEAT FUSE
-
-
ILLUSTRATION
*1
LUMBAR SUPPORT ADJUSTER ASSEMBLY LH
*2
FRONT LUMBAR POWER SEAT SWITC ...