2011 Mercedes GL-Class Owner's Manual - Page 256
2011 Mercedes GL-Class Manual
Page 256 highlights
254 Warning and indicator lamps in the instrument cluster Warning and indicator lamps in the instrument cluster Brakes Problem Possible causes/consequences and M Solutions On-board computer and displays $ (USA only) You are driving with the parking brake engaged. J (Canada only) X Release the parking brake. The warning lamp goes out and the warning tone ceases. The red brake system warning lamp comes on while the vehicle is moving. A warning tone also sounds. $ (USA only) G Risk of accident J (Canada only) There is insufficient brake fluid in the fluid reservoir. The red brake system X Pull over and stop the vehicle safely as soon as possible, paying warning lamp comes on attention to road and traffic conditions. Do not continue driving while the engine is under any circumstances. running. A warning tone X Engage the parking brake. also sounds. X Consult a qualified specialist workshop immediately. X Observe the additional display messages in the multifunction display. Do not add brake fluid. This will not rectify the malfunction. G Warning Driving with the brake warning lamp illuminated can result in an accident. Have your brake system checked immediately if the brake warning lamp stays on. Do not add brake fluid before checking the brake system. Overfilling the brake fluid reservoir can result in spilling brake fluid on hot engine parts and the brake fluid catching fire. You can be seriously burned.