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.
Operating the system
Vehicles without 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 goes off after the registered key has been inserted into the engine switch to indicate that the system has been canceled.

Vehicles with smart key system
The indicator light flashes after the engine switch has been turned to OFF to indicate that the system is operating.
The indicator light goes off after the engine switch has been turned to ACC or ON to indicate that the system has been canceled.

â– System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
â– Conditions that may cause the system to malfunction
NOTICE
â– To ensure the system operates correctly
Do not modify or remove the system.
If modified or removed, the proper operation of the system cannot be guaranteed.
AlarmTerminals of ecu
Check tire pressure warning ecu
Disconnect the e56 ecu connector.
Measure the voltage and resistance of the wire
harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
Reconnect the e56 ecu connector.
Measure the ...
Freeze frame data
Freeze frame data
Hint:
Whenever a dtc is detected or the abs operates,
the skid control ecu stores the current vehicle
(sensor) state as freeze frame data.
The skid control ecu stores the number of times
(maximum: 31) the ignition switch has been turned
from off to on since the ...
Warning lights
Warning lights inform the driver
of malfunctions in the indicated
vehicle's systems.
Brake system warning
light*1
Brake system warning
light*1
Brake system warning
light*1
Charging system warning
light (vehicles without
12.3-inch multi-information
display)*1
Charging system warning
light (vehic ...