2006 Mercedes CLS-Class Owner's Manual - Page 146

Controls in detail Instrument cluster To brighten illumination Turn the reset button in the instrument cluster clockwise ( page 24). The instrument cluster illumination will brighten. To dim illumination Turn the reset button in the instrument cluster counterclockwise ( page 24). The instrument cluster illumination will dim. Coolant temperature indicator ! Warning! G Driving when your engine is overheated can cause some fluids which may have leaked into the engine compartment to catch fire. You could be seriously burned. Steam from an overheated engine can cause serious burns and can occur just by opening the hood. Stay away from the engine if you see or hear steam coming from it. Turn off the engine, get out of the vehicle and do not stand near the vehicle until the engine has cooled down. Excessive coolant temperature triggers the coolant temperature warning lamp ( page 357) and a warning in the multifunction display ( page 379). The engine should not be operated with the coolant temperature above 248°F (120°C). Doing so may cause serious engine damage which is not covered by the Mercedes-Benz Limited Warranty. i During severe operating conditions, e.g. stop-and-go traffic, the coolant temperature may rise close to 248°F (120°C). 145