2009 Mercedes SL-Class Owner's Manual - Page 268
2009 Mercedes SL-Class Manual
Page 268 highlights
Practical hints Vehicle status messages in the multifunction display Tires Display messages Tire pressure displayed after driving for a few minutes. Inoperative Inoperative No Wheel Sensors Possible cause/consequence Vehicles with Advanced TPMS (Canada only): The tire inflation pressure is being checked. The TPMS (USA only) or Advanced TPMS (Canada only) is malfunctioning. There are wheels without appropriate wheel sensors mounted (e.g. winter tires). Possible solution X Drive the vehicle for a few minutes. Tire Pressure Monitor Tire Pressure Monitor X Have the TPMS or Advanced TPMS checked at an authorized Mercedes-Benz Center. Have the TPMS (USA only) or Advanced TPMS (Canada only) checked at an authorized Mercedes-Benz Center. Have the appropriate wheel sensors installed at an authorized Mercedes-Benz Center. X X 266