Automatic headlamp levelling, bus information

Bus message	Type of information	Transmitter	User
Headlamp levelling, fault indication active	On/Off	AHL	ICM
Dipswitch	0, 1, 2	BCM	AHL
Ignition key position	Lock Off On Start	CIM	AHL
Brake pedal switch active	On/Off	ECM	AHL
Front left wheel speed	rpm	TCS/ESP	AHL
Rear right wheel speed	rpm	TCS/ESP	AHL
Front right wheel speed	rpm	TCS/ESP	AHL
Rear left wheel speed	rpm	TCS/ESP	AHL