Adaptive cruise control

Adaptive cruise control*

Updated 7/9/2020

Adaptive cruise control*

The adaptive cruise control (ACCAdaptive Cruise Control) helps the driver to maintain an even speed combined with a pre-selected time interval to the vehicle ahead.

An adaptive cruise control provides a more relaxing driving experience on long journeys on motorways and long straight main roads in smooth traffic flows.

P5-1507-CitySafety Princip

The camera and radar unit measures the distance to the vehicle aheadNOTE: The illustration is schematic - details may vary depending on car model..

The driver selects the desired speed and a time interval to the vehicle ahead. If the camera and radar unit detects a slower vehicle in front of the car, the speed is adapted automatically via the preset time interval to the vehicle. When the road is clear again the car returns to the selected speed.

Warning

  • The adaptive cruise control function is supplementary driver support intended to facilitate driving and make it safer – it cannot handle all situations in all traffic, weather and road conditions.
  • The driver is advised to read all sections in the Owner's Manual that relate to this function to learn about factors such as its limitations and what the driver should be aware of before using the system (see the list of links at the end of this article).
  • The adaptive cruise control is not a substitute for the driver's attention and judgement. The driver is always responsible for ensuring the car is driven in a safe manner, at the appropriate speed, with an appropriate distance to other vehicles, and in accordance with current traffic rules and regulations.

Note

This function can come as either Standard or an Option depending on the market.

Adaptive Cruise Control regulates the speed with acceleration and braking. It is normal for the brakes to emit a low sound when they are being used to adjust the speed.

The adaptive cruise control aims to control the speed in a smooth way. In situations that demand sudden braking the driver must brake himself/herself. This applies in cases of large speed differences or if the vehicle in front brakes suddenly. Due to the limitations of the radar unit, braking may come unexpectedly or not at all.

The adaptive cruise control aims to follow the vehicle ahead in the same lane at a time interval set by the driver. If the radar unit cannot see any vehicle in front then the car will instead maintain the speed set and stored by the driver. This also takes place if the speed of the vehicle ahead increases and exceeds the stored speed.

The following applies for cars with automatic gearbox:

  • Adaptive Cruise Control can follow another vehicle at speed from 0 km/h up to 200 km/h (125 mph).

The following applies for cars with manual gearbox:

  • The Adaptive Cruise Control can follow another vehicle at speeds from 30 km/h (20 mph) up to 200 km/h (125 mph).

Warning

  • Adaptive cruise control is not a collision avoidance system. The driver is always responsible and must intervene if the system does not detect a vehicle ahead.
  • The adaptive cruise control does not brake for humans or animals, and not for small vehicles such as bicycles and motorcycles. Nor for low trailers, oncoming, slow or stationary vehicles and objects.
  • Do not use the adaptive cruise control in demanding situations, such as in city traffic, at junctions, on slippery surfaces, with a lot of water or slush on the road, in heavy rain/snow, in poor visibility, on winding roads or on slip roads.

Important

Maintenance of adaptive cruise control components must only be performed at a workshop - an authorised Volvo workshop is recommended.

Overview

Controls

P5-1617-ACC reglage

Buttons and symbols for functionsNOTE: The illustration is schematic - details may vary depending on car model..

: Activates the adaptive cruise control from standby mode and resumes stored speed
: Increases the stored speed
: From standby mode - activates the adaptive cruise control and stores current speed
: From active mode - deactivates/changes the adaptive cruise control to standby mode
: Reduces stored speed
Increases the time interval to vehicles ahead
Reduces the time interval to vehicles ahead
Target vehicle indicator: ACC has detected and is following a target vehicle at the preset time interval
Symbol for time interval to vehicles ahead

Note

In cars equipped with Adaptive Cruise Control*, it is possible to switch between cruise control and Adaptive Cruise Control – see the heading "Switch between CC and ACC".

Driver display

P5-1507-ACC Mätargrafik

Indication of speedsNOTE: The illustration is schematic - details may vary depending on car model..

Stored speed
Speed of vehicle ahead.
Current speed of your car.

To see different combinations of symbols depending on traffic situation - see the heading "Symbols and messages for the adaptive cruise control".


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