2010 Mercedes C-Class Owner's Manual - Page 288
2010 Mercedes C-Class Manual
Page 288 highlights
286 Vehicle status messages in the multifunction display Vehicle Display messages Possible causes/consequences and M Solutions The trunk is open. X Close the trunk (Y page 76). You are driving with the hood open. X Stop the vehicle in a safe location as soon as it is safe to do so. X Close the hood (Y page 225). There is otherwise danger of an accident. You are driving with at least one door open. The display symbol shows you which doors are open. X Close all doors. Rear Left Backrest Not Latched or Rear Right Backrest Not Latched The left or right rear seat backrest is not engaged. X Adjust the rear seat backrest until it is fully engaged in position. N M Practical hints ; _ + + A SmartKey with KEYLESS-GO left in the vehicle was Key recognized while trying to lock the vehicle from the outside. Detected In Vehicle X Take the SmartKey out of the vehicle. Don't Forget Your Key This message appears for a maximum of 60 seconds if the driver's door is opened with the engine turned off and no SmartKey in the starter switch. This message is only a reminder. X Take the SmartKey with you when leaving the vehicle. You have forgotten to remove the SmartKey. X Remove the SmartKey from the starter switch. The SmartKey is malfunctioning. X Contact an authorized Mercedes-Benz Center. + + Take Your Key From Ignition Obtain A New Key