The immobilizer system prevents a key that has not been pre-registered from starting the engine. Each key contains electronic transmitters that use electronic signals to verify the key.
Pay attention to the following when inserting the key into the ignition switch or pressing the ENGINE START/STOP button:
NOTICE
Leaving the key in the vehicle can result in theft or accidental movement of the vehicle.
Always take the key with you whenever you leave the vehicle unattended.
Do not alter the system or add other devices to it.
Doing so may damage the system and make your vehicle inoperable.
Canadian models only: Apply and hold the brake pedal before turning the vehicle on the first time after the battery has been disconnected.
Honda Civic Owners Manual. Ignition Switch
Ignition Switch*
Manual transmission models
WARNING
Removing the key from the ignition switch
while driving locks the steering. This can
cause you to lose control of the vehicle.
Remove the key from the ignition switch
only when parked.
Continuously variable transmission models
You ca ...