2010 Mercedes GLK-Class Owner's Manual - Page 288

286 Vehicle status messages in the multifunction display Display messages Possible causes/consequences and M Solutions The left or right tail lamp is malfunctioning. X Replace the bulb as soon as possible (Y page 303). b Check Left Tail Lamp or Check Right Tail Lamp Check Left Tail and Brake Lamps or Check Right Tail and Brake Lamps Check Left Cornering Light or Check Right Cornering Light b Practical hints The left or right tail lamp/brake lamp is malfunctioning. X Replace the bulb as soon as possible (Y page 303). b The left or right corner-illuminating lamp is malfunctioning. X Contact an authorized Mercedes-Benz Center as soon as possible. b b The left or right trailer brake lamp is malfunctioning. Check Trailer X Replace the bulb as soon as possible. Brake Lamp Check Trailer Left Tail Lamp or Check Trailer Right Tail Lamp The left or right trailer tail lamp is malfunctioning. X Replace the bulb as soon as possible.