Mercedes-Benz GLB 2021 Series Operator's Manual page 383

Display messages Possible causes/consequences and
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* The Downhill Speed Regulation is malfunctioning.
Inoperative
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* The Downhill Speed Regulation is not available in the currently selected drive program.
Not in Curr. Drive Prog.
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* The maximum speed of 25 mph (40 km/h) for the Downhill Speed Regulation has been exceeded.
Max. Speed 25 mph
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* Active Distance Assist DISTRONIC cannot be activated as not all activation conditions are fulfilled.
- - - mph
Consult a qualified specialist workshop.
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Change the drive program ( page 154).
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Drive more slowly.
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Comply with the activation conditions of Active Distance Assist DISTRONIC (
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Display messages and warning/indicator lamps 381
M M Solutions
page 187).
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