2010 Mercedes GLK-Class Owner's Manual - Page 289

Vehicle status messages in the multifunction display Display messages Possible causes/consequences and M Solutions The left or right trailer turn signal lamp is malfunctioning. X Replace the bulb as soon as possible. 287 b Check Trailer Left Turn Signal or Check Trailer Right Turn Signal Check Rear Left Turn Signal or Check Rear Right Turn Signal Check Front Left Turn Signal or Check Front Right Turn Signal Check Left Mirror Turn Signal or Check Right Mirror Turn Signal b The left or right front turn signal lamp is malfunctioning. X Replace the bulb as soon as possible (Y page 303). b The turn signal in the left or right exterior rear view mirror is malfunctioning. This message will only appear if all LEDs have stopped working. X Contact an authorized Mercedes-Benz Center as soon as possible. Z Practical hints b The left or right rear turn signal lamp is malfunctioning. X Vehicles with halogen headlamps: Replace the bulb as soon as possible (Y page 303). X Vehicles with Bi-Xenon headlamps: Contact an authorized Mercedes-Benz Center as soon as possible.