2005 Mercedes SL-Class Owner's Manual - Page 162
2005 Mercedes SL-Class Manual
Page 162 highlights
Controls in detail Control system i All statistics stored since the last engine start will be reset approximately four hours after the SmartKey in the starter switch is turned to position 0 or removed from the starter switch. Resetting will not occur if you turn the SmartKey back to position 1 or 2 within this time period. Fuel consumption since last reset Press button ÿ or è repeatedly until you see the first function of the Trip computer menu. Press button j or k repeatedly until you see this message in the left display: From reset. Resetting fuel consumption statistics Press button ÿ or è repeatedly until you see the first function of the Trip computer menu. Press button j or k repeatedly until you see the reading that you want to reset in the left display. Press and hold the reset button in the instrument cluster ( page 25) until the value is reset to 0. 1 Distance driven since last reset 2 Average speed since last reset 3 Time elapsed since last reset 4 Average fuel consumption since last reset 160