2009 Mercedes SL-Class Owner's Manual - Page 127

Controls in detail Instrument cluster Adjusting the instrument cluster illumination Use reset button 1 to adjust the illumination brightness for the instrument cluster and the switches on the center console.. by opening the engine hood. Stay away from the engine if you see or hear steam coming from it. Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the vehicle and do not stand near the vehicle until the engine has cooled down. During severe operating conditions, e.g. stopand-go traffic, the coolant temperature may rise close to 248‡ (120†). Resetting trip odometer X Make sure you are viewing the standard display (Y page 129) in the multifunction display. Press and hold the reset button in the instrument cluster (Y page 124) until the trip odometer is reset. X i The instrument cluster illumination is dimmed or brightened automatically to suit ambient light conditions. X To brighten illumination: Turn reset button 1 clockwise until the desired level of illumination is reached. To dim illumination: Turn reset button 1 counterclockwise until the desired level of illumination is reached. Tachometer The red marking on the tachometer (Y page 30) denotes excessive engine speed. X Coolant temperature gauge The coolant temperature gauge is on the left side in the instrument cluster (Y page 30). ! Excessive coolant temperature triggers a warning in the multifunction display and the red coolant temperature warning lamp D in the instrument cluster comes on. The engine should not be operated with a coolant temperature above 248‡ (120†). Doing so may cause serious engine damage which is not covered by the Mercedes-Benz Limited Warranty. ! Avoid driving at excessive engine speeds, as it may result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty. To help protect the engine, the fuel supply is interrupted if the engine is operated within the red marking. G Warning! 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 which can occur just Z 125