2008 Mercedes SL-Class Owner's Manual - Page 305

Operation Tires and wheels Restarting the Run Flat Indicator The tire inflation pressure monitor must be restarted in the following situations: if you have changed the tire inflation pressure if you have replaced the wheels or tires if you have installed new wheels or tires Using the Tire and Loading Information placard on the driver's door B-pillar or, if available, the tire inflation pressure label on the inside of the fuel filler flap, make sure the tire inflation pressure of all four tires is correct. Warning! Switch on the ignition ( page 40). Make sure the standard display menu appears in the multifunction display ( page 149). Press button k or j repeatedly until the following message appears in the multifunction display: Run Flat Indicator Active Menu: R-Button Warning! G The Run Flat Indicator does not provide a warning for wrongly selected tire inflation pressures. Always adjust tire inflation pressure according to the Tire and Loading Information placard on the driver's door B-pillar ( page 295) or, if available, on the tire inflation pressure label located on the inside of the fuel filler flap ( page 279). The Run Flat Indicator does not replace regular checks of the tire inflation pressures since a gradual pressure loss in more than one tire cannot be detected by the Run Flat Indicator. The Run Flat Indicator is not able to issue a warning due to a sudden dramatic loss of tire inflation pressure (e.g. tire blowout caused by a foreign object). In this case bring the vehicle to a halt by carefully applying the brakes and avoiding abrupt steering maneuvers. Press the reset button ( page 27). The following message will appear in the multifunction display: Restart Run Flat Indicator? G The Run Flat Indicator can only warn you in a reliable manner if you have set the correct tire inflation pressures for each tire. If an incorrect tire inflation pressure was set, the system will monitor the pressure according to the incorrect value. 304