Mercedes-Benz E-Class Saloon Owner's Manual page 562

560 Display messages and warning/indicator lamps
Vehicle
Warning/indicator lamp
Possible causes/consequences and
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The red power steering system warning lamp is lit while the engine is running.
The power-assisted steering or the steering itself is malfunctioning.
& WARNING Risk of accident if steering capability is impaired
Power steering system
warning lamp
If the steering does not function as intended, the vehicle's operating safety is jeopardised.
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The red trailer tow hitch warning lamp is on.
The trailer tow hitch is not operational or swivels.
& WARNING Risk of an accident if the ball neck is not locked
Trailer tow hitch warning
lamp
If the ball neck is not in the locked position, the trailer may come loose.
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Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do
not continue driving under any circumstances.
Consult a qualified specialist workshop.
Observe the messages on the multifunction display.
Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do
not continue driving under any circumstances.
Uncouple the trailer and secure it against rolling away.
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