Alerts about traffic crossing behind the car

When you're reversing at low speeds, the car can alert you if it detects traffic about to pass behind you. The name of this feature is Rear Cross Traffic Alert1.
Warning about crossing traffic behind car
Your car can detect vehicles 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 or neutral gear. Using the rear radars, this feature can detect traffic approaching from the sides and provide a visual alert in the parking view. The visual alert can also be accompanied by a sound.

These alerts are primarily for larger vehicles in motion, such as cars. In favourable conditions, the car may also be able to warn you of smaller moving objects.

 Important

Driver responsibility

Alerts about traffic behind the car 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 the separate Rear Auto Brake function 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 radar's view. 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 radar views might be obstructed to the sides, 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.