Mercedes-Benz S-Class 2020 Operator's Manual page 506

504 Display messages and warning/indicator lamps
Display messages Possible causes/consequences and
* The active hood (pedestrian protection) is malfunctioning or inoperative after having already been triggered.
Active Hood Malfunction
See Operator's Manual
C
* At least one door is open.
M
* The hood is open.
N
* The trunk lid is open.
Consult a qualified specialist workshop.
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Close all doors.
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& WARNING Risk of accident if the engine hood is unlatched while driving
An unlocked engine hood may open up when the vehicle is in motion and block your view.
Never unlatch the engine hood while driving.
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Before every trip, ensure that the engine hood is latched.
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Stop the vehicle immediately in accordance with the traffic conditions.
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Close the hood.
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& DANGER Risk of exhaust gas poisoning
Combustion engines emit poisonous exhaust gases such as carbon monoxide. Exhaust gases can enter the
vehicle interior if the trunk lid is open when the engine is running, especially if the vehicle is in motion.
M M Solutions