In addition to the system limits of the Dynamic Road Sign Display function and ACC, the predictive cruise control function is subject to
the following additional, system-related limitations:
—The predictive cruise control function detects only road signs that show a speed limit. In particular, predictive cruise control does
not take into account the right of way or traffic lights.
—Road signs that indicate a speed limit indirectly, e.g. place-name signs, will be detected only on the basis of the navigation data.
—Predictive cruise control is not available on roads which are not recorded in the navigation data or not recorded with sufficient
accuracy.
—If a speed limit is announced on the basis of the navigation data but is not detected by the Dynamic Road Sign Display function, the
announced speed will be reset to the last-stored speed.
—The predictive cruise control system cannot control speeds below the minimum speed (→ Adaptive Cruise Control (ACC)).
Function limitations
In the following situations, it is possible that the predictive cruise control will not change the speed or will change it with a delay or in
an unexpected way:
—There is a fault in the Dynamic Road Sign Display system. No speed limit is shown in the instrument cluster display.
— Road signs are not detected or are not detected correctly.
—The navigation data is out-of-date.
—You are driving without route guidance.
—You leave the route calculated by the navigation system.
—The vehicle position cannot be determined correctly due to imprecise GPS data.
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