2011 Mercedes E-Class Owner's Manual - Page 201

Displays and operation If the coolant temperature rises above 248 ‡(120 †), do not drive any further as this could damage the engine. 199 Tachometer The red band in the tachometer indicates the engine's overrevving range. The on-board computer is activated as soon as you turn the SmartKey to position 1 in the ignition lock. You can control the multifunction display and the settings in the on-board computer using the buttons on the multifunction steering wheel. ! Do not drive in the overrevving range, as this could damage the engine. The fuel supply is interrupted to protect the engine when the red band is reached. Outside temperature display The outside temperature display is in the multifunction display. G Warning! The outside temperature indicator is not designed to serve as an ice-warning device and is therefore unsuitable for that purpose. Indicated temperatures just above the freezing point do not guarantee that the road surface is free of ice. The road may still be icy, especially in wooded areas or on bridges. : ; Multifunction display ~6 Makes/accepts or rejects/ends a call WX Adjusts the volume 8 Mute ? Activates voice control; see the separate operating instructions %Press briefly: Back Deactivates voice control Hides display messages %Press and hold: Selects the standard display Z Changes in the outside temperature are displayed after a short delay. Speedometer with segments The segments in the speedometer indicate which speed range is available. Cruise control mode: The segments light up from the stored speed to the maximum speed. DISTRONIC PLUS mode: One or two segments around the stored speed light up. = ? On-board computer and displays Operating the on-board computer