2011 Mercedes GL-Class Owner's Manual - Page 343

Tire pressures X 341 Make sure that the key is in position 2 (Y page 147) in the ignition lock. X Press and hold the V or U button on the multifunction steering wheel until the standard display appears in the multifunction display (Y page 218). X Press the * or & button until the Run Flat Indicator Active Menu: RButton message appears in the multifunction display. X Press the reset button (Y page 28) on the instrument cluster. The Restart Run Flat Indicator? Yes Cancel message appears in the multifunction display. If you wish to confirm the restart: X corresponding sensors are installed on all the wheels. The tire pressure monitor informs you via a yellow warning lamp in the instrument cluster about pressure loss or if the system is malfunctioning. Whether the warning lamp flashes or lights up indicates whether a tire pressure is too low or the tire pressure monitor is malfunctioning: RIf the warning lamp is lit up constantly, one or more of your tires are significantly underinflated. The tire pressure monitor is not malfunctioning. RIf the warning lamp flashes for 60 seconds and is then lit constantly, the tire pressure monitor is malfunctioning. If you wish to cancel the restart: X Press the X button. Wait until the Restart Run Flat Indicator? Yes Cancel message disappears. The tire pressure values stored at the last restart will continue to be monitored. or X Tire pressure monitoring system (USA only) Important safety information The tire pressure monitoring system consists of sensors installed in the vehicle wheels that monitor the air pressure in all four tires. The tire pressure monitoring system warns you when the pressure in one or more tires decreases. It only works when the Z Tires and wheels Press the W button. The Run Flat Indicator Restarted message appears in the multifunction display. After a teach-in period, the tire pressure loss warning system will monitor the set tire pressures of all four tires. G Warning! Each tire, including the spare (if provided), should be checked at least once a month when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the tire and loading information table on the driver's door B-pillar or the tire inflation pressure table on the inside of the fuel filler flap. If your vehicle has tires of a different size than the size indicated on the tire and loading information table or the tire inflation pressure table, you should determine the proper tire inflation pressure for those tires. As an added safety feature, your vehicle has been equipped with a tire pressure monitor (TPMS). An indicator lamp lights up if one or more of your tires are significantly underinflated. Accordingly, when the low tire pressure indicator lamp lights up, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure. Underinflation also reduces fuel efficiency and tire tread life and may affect the vehicle's handling and stopping ability. Please note that the TPMS is not a substitute for proper tire maintenance and it is the driver's