2009 Mercedes S-Class Owner's Manual - Page 263

Operation Tires and wheels supplemental tire inflation pressure information on the inside of the fuel filler flap, make sure the tire inflation pressure of all four tires is correct. X Switch on the ignition. X Press button è or ÿ on the multifunction steering wheel repeatedly until the standard display appears in the multifunction display (Y page 143). X Press button j or k repeatedly until the current inflation pressure for each tire (Advanced TPMS) or the following message (TPMS) appears in the display : Tire Pressure Monitor Active Menu: R-Button X If you wish to confirm: Press button æ. The following message will appear in the multifunction display: Tire Pressure Monitor Restarted After driving a few minutes the system verifies that the current tire inflation pressures are within the system's specified range. Afterwards the current tire inflation pressures are accepted as reference values and then monitored. X If you wish to cancel: Press button ç. Tire labeling Besides tire name (sales designation) and manufacturer name, a number of markings can be found on a tire. Following are some explanations for the markings on your vehicle's tires: i Vehicles with Advanced TPMS: The Tire pressure displayed after driving for a few minutes. may appear before the tire inflation pressures are displayed. X Press the reset button (Y page 138). The following message will appear in the multifunction display: Restart tire pressure monitor? i Vehicles with Advanced TPMS: When the wheel positions have been changed, the air pressure of a tire may be displayed for the wrong position temporarily. After driving for a few minutes, the air pressure will be shown for the correct position. 1 Uniform Tire Quality Grading Standards (Y page 267) 2 DOT, Tire Identification Number (Y page 265) 3 Maximum tire load (Y page 266) 4 Maximum tire inflation pressure Z (Y page 266) 261