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Lane Departure Warning: Notes

The lane departure warning causes the steering wheel to vibrate to warn the driver that the vehicle is threatening to leave the current lane without driver intending it to do so. The prerequisite for this function to work is the presence of road or lane markings that can be recognized by the control unit based on an evaluation of the images recorded by the forward facing video camera.

The system is therefore intended to assist the driver in case of a lapse of attention. Nevertheless, the driver continues to bear full responsibility for the vehicle.

The system is designed to assist the driver on highways, major roads and well maintained country roads. Warnings are given, therefore, only at speeds of over 44 mph.

The driver activates the system using the lane departure warning button in the BEFAS driver assistance control panel.

Fig 1: Identifying Lane Departure Warning
G06925349Courtesy of BMW OF NORTH AMERICA, INC.
Fig 2: Display Lane Departure Warning Button On BEFAS Control
G06925350Courtesy of BMW OF NORTH AMERICA, INC.

The "system ON" state is indicated in the instrument cluster and, where applicable, in the head-up display by the following symbol.

Fig 3: Display Lane Departure Warning Switched On
G06925351Courtesy of BMW OF NORTH AMERICA, INC.

The activated system is ready as soon as lane markings are detected by the control unit and the vehicle is travelling faster than 44 mph.

The ready state of the system is represented by additional arrow symbols in the display.

Fig 4: Display Lane Departure Warning Ready
G06925352Courtesy of BMW OF NORTH AMERICA, INC.

If the vehicle threatens to drive over a lane marking and leave the lane without the driver intending it to do so, the driver is alerted by a vibrating of the steering wheel.

The lane departure warning senses an intentional change of lane made by the driver from the activation of the turn signal. In this case there is no warning when the vehicle is driven over the lane marking.

Fig 5: Identifying Steering Wheel And Vibration For Lane Departure Warning On F01/F02
G06925353Courtesy of BMW OF NORTH AMERICA, INC.
STEERING WHEEL LEGENDS

Index Explanation
1 Steering wheel electronics
2 Vibration actuator for the lane departure warning
STEERING COLUMN LEGENDS

Index Explanation
1 Turn signal/high-beam stalk on the steering column in the F01/F02
2 Turn signal
Fig 6: Identifying Turn Signal And High Beam Stalk On Steering Column
G06925354Courtesy of BMW OF NORTH AMERICA, INC.