2011 Mercedes C-Class Owner's Manual - Page 214

212 Warning and indicator lamps in the instrument cluster Tires Problem Possible causes/consequences and M Solutions On-board computer and displays h G Risk of accident USA only: The tire pressure monitor has detected a loss of pressure in at The yellow combination least one of the tires. low tire pressure X Stop the vehicle without making any sudden steering or braking warning lamp/TPMS maneuvers. Pay attention to the traffic conditions as you do so. malfunction warning X Observe the additional display messages in the multifunction lamp is lit. display. X Check the tire pressure. If necessary, correct the tire pressure (Y page 277). X If necessary, change a wheel (Y page 286). h The tire pressure monitor is faulty. USA only: X Observe the additional display messages in the multifunction display. The yellow combination low tire pressure X Visit a qualified specialist workshop. warning lamp/TPMS malfunction warning lamp flashes for sixty seconds and then remains lit. Each tire, including the spare (if provided), should be checked every other week when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on 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. If your vehicle has tires of a different size than the size indicated on the Tire and Loading Information placard or, if available, the tire inflation pressure label, 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 monitoring system (TPMS) that illuminates a low tire pressure warning lamp when one or more of your tires are significantly underinflated. Accordingly, when the low tire pressure warning lamp illuminates, 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 responsibility to maintain correct tire pressure, even if underinflation has not reached the level to trigger illumination of the TPMS low tire pressure warning lamp. Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly. The TPMS malfunction indicator is combined with the low tire pressure warning lamp. When the system detects a malfunction, the warning lamp will flash for approximately one minute and then remain continuously illuminated. This sequence will continue G Warning