Driver Support

Cross-Traffic Alert Limitations

~1min read

(* Option/accessory.)

(Cross traffic warning when the vehicle is reversing.)

The Cross Traffic Alert (CTA) function with Auto Brake may have limited functionality in certain situations. Auto brake is active at speeds below 15 km/h.

The function has certain limitations – the sensors, for example, cannot "see" through other parked vehicles or objects blocking the vehicle.

Below are a few examples of situations in which the function's field of vision may be initially limited and approaching vehicles may therefore not be detected until they are very close to your vehicle:

Volvo XC90. Cross Traffic Alert limitations

The vehicle is parked very far into the parking space.

Volvo XC90. Cross Traffic Alert limitations

In a diagonal parking space, Cross Traffic Alert may be completely "blind" on one side of your vehicle.

Volvo XC90. Cross Traffic Alert limitations Blind zone.

Volvo XC90. Cross Traffic Alert limitations The function's field of vision.

However, as you back your vehicle slowly out of a parking space, CTA's field of vision changes in relation to the obstructing vehicle/object and its blind zone is reduced.

Examples of further limitations

  • The Auto Brake subfunction only detects vehicles in motion and may therefore not "see" and brake for e.g. stationary obstacles, cyclists or pedestrians.
  • Dirt, ice and snow covering the sensors may reduce functionality and prevent the system from providing warnings.
  • CTA is automatically deactivated if a trailer, bicycle holder or similar is connected to the vehicle's electrical system.
  • For CTA to function effectively, bicycle holders, luggage racks or similar should not be mounted on the vehicle's towbar.

Test yourself

A quick Volvo XC90 quiz: every answer comes with an explanation and a link to the manual page.