Adaptive cruise control

Deactivating/activating the adaptive cruise control*

Updated 7/23/2018

The adaptive cruise control (Adaptive Cruise Control - ACC) can be temporarily deactivated so that it is set in the standby mode and can later be reactivated.

Deactivate Adaptive Cruise Control and set it in standby mode

P5-1507-ACC hastighet

NOTE: The illustration is schematic - details may vary depending on car model.

To temporarily switch off Adaptive Cruise Control and set it in standby mode:

Press the steering wheel button (2).

The symbol on the driver display changes colour from WHITE to GREY and the stored speed in the centre of the speedometer changes from BEIGE to GREY.

In standby mode, the driver must him/herself control both speed and distance.

When the adaptive cruise control is in standby mode and the car drives too close to a vehicle ahead, the driver is warned about the short distance by the Distance Warning function instead (see reference to the heading "Distance Warning" at the end of this section).

Standby mode on driver intervention

The adaptive cruise control is temporarily deactivated and set in standby mode if:

  • the foot brake is used
  • the gear selector is moved to N position.
  • the driver maintains a speed higher than the stored speed for longer than 1 minute.
  • the clutch pedal is depressed for approx. 1 minute - applies to cars with manual gearbox.

In this situation, the driver must intervene and adapt the speed and distance to the vehicle ahead.

A temporary increase in speed with the accelerator pedal, e.g. during overtaking, does not affect the setting - the car returns to the last stored speed when the accelerator pedal is released.

Automatic standby mode

Adaptive cruise control is dependent on other systems, e.g. stability control/anti-skid ESC. If any of these systems stops working, adaptive cruise control is switched off automatically.

In the event of automatic deactivation a signal will sound and a message is shown in the driver display. The driver must then intervene and adapt the speed and distance to the vehicle ahead.

Automatic deactivation may occur if:

  • the speed is below 5 km/h (3 mph) and ACC is uncertain whether the vehicle ahead is a stationary vehicle or an object, such as a speed bump.
  • the speed is below 5 km/h (3 mph) and the vehicle ahead turns off so that ACC no longer has a vehicle to follow.
  • speed is reduced to below 30 km/h(20 mph) - only applies to cars with manual gearbox.
  • the driver opens the door
  • the driver takes off the seatbelt
  • engine speed is too low/high
  • wheels lose traction
  • brake temperature is high
  • the parking brake is applied
  • the camera and radar unit is covered by e.g. snow or heavy rainfall (camera lens/radio waves are blocked).

Reactivating adaptive cruise control from standby mode

P5-1507-ACC hastighet

NOTE: The illustration is schematic - details may vary depending on car model.

To reactivate ACC from standby mode:

Press the steering wheel button (1).

The speed is then set to the most recently stored speed.

Note

A marked speed increase may occur once the speed has been resumed by pressing steering wheel button .


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