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
Toyota CH-R Service Manual > Pre-collision System: Front Radar Sensor Incorrect Axial Gap (C1A11,C1A14)
DESCRIPTION
When the system determines that the vehicle is driving straight ahead based on
signals from the yaw rate and acceleration sensor (airbag sensor assembly), etc.,
the millimeter wave radar sensor assembly performs self-diagnosis to check if the
sensor beam axis is misaligned.
C1A11 ...
Toyota CH-R Service Manual > Navigation System: Sending Malfunction (Navigation to APGS) (U0073,U0100,U0129,U0140,U0155,U0164,U0198)
DESCRIPTION
These DTCs are stored when a malfunction occurs in the CAN communication circuit.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
U0073
Sending Malfunction (Navigation to APGS)
CAN bus connec ...