BMW 3 Owners & Service Manuals

BMW 3: Cross traffic warning

Concept

At blind driveways or when driving out of diagonal parking spaces, approaching cross traffic is detected sooner by the system than is possible from the driver's seat.

General information

Driver assistance systems

Two radar sensors in the rear bumper monitor the area behind the vehicle.

The system indicates approaching traffic.

Depending on the vehicle equipment, the traffic area in front of the vehicle is monitored as well.

Two additional radar sensors are located in the front bumpers.

Safety information

Warning The system cannot serve as a substitute for the driver's personal judgment in assessing visibility and traffic situation. There is a risk of accident.

Adjust driving style to traffic conditions. Watch traffic closely and actively intervene where appropriate.

Overview

Button in the vehicle

Driver assistance systems

Park assistance button

Park assistance button

Driver assistance systems

The radar sensors are located in the rear bumper.

Driver assistance systems

Depending on the vehicle equipment, two additional radar sensors are located in the front bumpers.

Always keep the bumper in the area of the radar sensors clean and unobstructed.

Switching on/off

Activating/deactivating the system

1. Press the park assistance button.

2. Move the Controller to the right.

3. "Settings".

4. "Cross traffic warning".

5. "Cross traffic warning".

Or via iDrive:

1. "CAR".

2. "Settings".

3. "Driver Assistance".

4. "Parking and maneuvering".

5. "Cross traffic warning".

6. "Cross traffic warning".

Switching on automatically

If the system was activated on the Control Display, it is automatically switched on as soon as PDC Park Distance Control or Panorama View is active and a gear is engaged.

If reverse gear is engaged, the rear system is switched on.

Depending on the vehicle equipment, the front system is switched on when a forward gear is engaged.

Switching off automatically

The system is automatically switched off in the following situations:

  • When the speed exceeds walking speed.
  • When a certain driving distance is exceeded.
  • With the steering and traffic jam assistant active: when a certain driving distance is exceeded.

    With an active parking operation of the parking assistant.

Warning

General information

The respective display is called up on the Control Display. A signal tone may sound and the light in the exterior mirror may flash.

Light in the exterior mirror

Driver assistance systems

The light in the exterior mirror flashes if vehicles are detected by the rear sensors and your own vehicle is moving backwards.

Display in the PDC Park Distance Control view

Driver assistance systems

In the PDC Park Distance Control view, the respective boundary area flashes red, if vehicles are detected by the sensors.

Display in the camera view

Driver assistance systems

The respective boundary area, arrow 1, in the camera view flashes red, if vehicles are detected by the sensors.

Yellow lines, arrow 2, mark the bumper of your own vehicle.

Acoustic warning

In addition to the optical indicator, a warning signal sounds if your own vehicle moves into the respective direction.

System limits

The system may not be fully functional in the following situations:

  • If the speed of the approaching vehicle is very high.
  • In heavy fog, wet conditions, or snowfall.
  • In tight curves.
  • If the bumper is dirty, iced up, or covered, for instance by stickers.
  • If the field of view of the sensors is covered, e.g., by garage walls, hedges or snow hills.
  • If cargo protrudes.
  • If crossing objects move at a very slow speed.
  • If other objects are in the capture range of the sensors, that hide cross traffic.

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