Volkswagen ID.4: System Limitations of Predictive Cruise Control

Beside the system limitations of the Dynamic Road Sign Display system and the system limitations of the ACC, predictive cruise control also has the following additional, system-based limitations:

• Predictive cruise control only detects road signs that display a speed limit. In particular, predictive cruise control does not detect priority rules or traffic lights.
• Road signs that display a speed limit indirectly, such as city limit signs, are only detected on the basis of the navigation data.
• Traffic signs with additional signs, for example indicating temporary restrictions, are only taken into account if they are included in the navigation data.
• The predictive cruise control function is not available on roads that are either not included or not mapped with complete accuracy in the navigation data.
• If a speed limit is announced on the basis of the navigation data but not detected by the Dynamic Road Sign Display, the announced speed is reset to the speed last saved.
• Predictive cruise control cannot take over speeds below the minimum speed (→ Adaptive Cruise Control (ACC) ).

Functional limitations

In the following situations, predictive cruise control may not change the stored speed, may change it with a delay, or may change it in a way that is not desired:

• Dynamic Road Sign Display is malfunctioning. No speed limit is displayed in the instrument cluster display.
• Road signs are not being detected or are not being detected correctly.
• The navigation data are out of date.
• You are driving without route guidance.
• You deviate from the route calculated by the navigation system.
• The position of the vehicle cannot be determined correctly due to inaccurate GPS data.

Activating the predictive cruise control

You can individually adjust settings in the Infotainment system Assistance systems menu, to determine which settings the vehicle should respond to:

• Response to a road layout.
• Response to permitted speeds.
• Response to ends of traffic jams.

If you have activated at least one event, predictive cruise control will be automatically switched on as well when ACC is switched on.

Adjusting the ACC settingsDriving with predictive cruise control