Alerts about traffic crossing behind the car

When you're reversing at low speed, the car can warn you if it detects traffic about to pass behind you. This feature is called Cross Traffic Alert.
Warning about crossing traffic behind car.
Your car can detect a car crossing behind you, for example when reversing out of a parking spot. This allows it to warn you so that you can slow down or brake.

Alerts about traffic crossing behind the car are only available when the car is in reverse (R) or rolling backwards in neutral (N). This feature uses the rear radars to detect traffic. When it detects a moving vehicle, an alert appears in the centre display along with a sound.

This feature is primarily designed for detecting larger vehicles in motion, such as cars. In favourable conditions it may also be able to warn you of smaller moving objects, such as cyclists and pedestrians.

 Important

Driver responsibility

Alerts about traffic crossing behind are a supplement to safe driving practices. They do not reduce or replace the need for the driver to stay attentive and focused on driving safely.

 Note

Automatic braking for crossing traffic

If automatic braking1 is enabled, the car may also intervene by braking to prevent or mitigate an imminent collision with traffic detected behind you.

Detection zones

Cross traffic alert detection zones
The situation shown in this image illustrates how surrounding objects, such as parked cars can limit the car's ability to detect other vehicles and traffic situations. In a situation without obstacles, the effective detection zones are the same on both sides.

 Note

Reversing out of a parking space

When parked, your rear corner radars' side views might be obstructed, which affects detection of crossing traffic. This happens when you are parked with the rear corners of your car further in than adjacent cars or other objects. This effect is particularly noticeable in angled parking spaces. However, as you reverse out of a parking space, the radars' views gradually increase, making detection possible. To minimise the risk of late or no detection when reversing out of a parking space, go slowly.

Conditions and limitations

  • The alerts are only available when reversing at speeds below 15 km/h (9 mph).
  • If the car deactivates the rear radars, this feature is automatically disabled. This happens if a trailer is connected. Towbar-mounted accessories that are not connected electrically to the car does not disable the rear radars, but can obstruct them.
  • Detection of traffic behind the car relies on detection by the rear radars. Be sure to read the separate section about limitations of radar detection.
  1. 1 Rear Auto Brake (RAB)

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