Mercedes-Benz C-Class Coupe 2019 Operator's Manual page 464

462 Display messages and warning/indicator lamps
Display messages
C
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Possible causes/consequences and
& 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, paying attention to road and traffic conditions.
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Close the hood.
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* At least one door is open.
Close all doors.
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* The trunk lid is open.
& 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.
Always switch off the engine before opening the trunk lid.
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Never drive with the trunk lid open.
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Close the trunk lid.
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