Change of target and automatic braking with the Adaptive Cruise Control

The Adaptive Cruise Control (Adaptive Cruise Control - ACC) has change of target and braking functions at certain speeds.

Change of target

P5-1507-ACC RadarSensorTargetChange
If the target vehicle in front suddenly turns then there may be stationary traffic in front.

When the adaptive cruise control is following another vehicle at speeds below 30 km/h (20 mph) and changes target from a moving to a stationary vehicle, the adaptive cruise control will slow down for the stationary vehicle.

 Warning

When the adaptive cruise control is following another vehicle at speeds in excess of ca 30 km/h (20 mph) and the target is changed from a moving vehicle to a stationary vehicle, the adaptive cruise control will ignore the stationary vehicle and instead select the stored speed.

  • The driver must then intervene him/herself and brake.

Automatic standby mode with change of target

The adaptive cruise control is disengaged and set in standby mode:
  • when the speed is below 5 km/h (3 mph) and the adaptive cruise control is uncertain whether the target object is a stationary vehicle or some other object, e.g. a speed bump.
  • when the speed is below 5 km/h (3 mph) and the vehicle in front turns off so the adaptive cruise control no longer has a vehicle to follow.

Automatic braking

For shorter stops in connection with inching in slow traffic or at traffic lights driving is automatically resumed if the stops do not exceed about 3 seconds - if it takes longer before the car in front starts moving again then the Adaptive cruise control is set in standby mode with automatic braking.

The Adaptive Cruise Control is reactivated in one of the following ways:
  • Press the steering wheel button P5-1507-Symbol 5x3,5-CC rattknapp Återuppta hastighet.
  • Depress the accelerator pedal.
The Adaptive Cruise Control resumes following the vehicle ahead if it starts moving forward within 6 seconds.

 Note

ACC can keep the car stationary for a maximum of 5 minutes. After this the parking brake is applied and adaptive cruise control is disengaged.

The parking brake must be released before the adaptive cruise control can be reactivated.

Cessation of automatic braking

In some situations, automatic braking ceases on reaching 0 km/h and Adaptive Cruise Control is set in standby mode. This means that the brakes are released and the car may start to roll - the driver must therefore intervene and brake the car himself/herself to keep it stationary.

This may take place in the following situations:
  • the driver puts his/her foot on the brake pedal
  • the parking brake is applied
  • the gear selector is moved to P, N, or R position
  • the driver sets the adaptive cruise control in the standby mode.

Automatic activation of parking brake

In certain situations the parking brake is applied to keep the car stationary.

This occurs if the Adaptive Cruise Control is holding the car still and:
  • the driver opens the door or takes off his/her seatbelt
  • ACC has kept the car stationary for more than approx. 5 minutes
  • the brakes have overheated
  • the engine is switched off.

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