Mercedes-Benz CLS Operator's Manual page 392

Display messages
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Possible causes/consequences and
* The bonnet is open.
& WARNING Risk of accident due to driving with the bonnet unlocked
The bonnet may open and block your view.
Never release the bonnet when driving.
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Before every trip, ensure that the engine bonnet is locked.
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Stop the vehicle immediately in accordance with the traffic conditions.
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Close the bonnet ( page 306).
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* The boot 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 boot lid is open when the engine is running, especially if the vehicle is in motion.
Always switch off the engine before opening the boot lid.
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Never drive with the boot lid open.
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Close the boot lid.
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Solutions
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Display messages and warning/indicator lamps 389