2011 Mercedes R-Class Owner's Manual - Page 328

326 Tire pressures message will appear in the multifunction display. applying the brakes and avoiding abrupt steering maneuvers. G Warning! Tires and wheels When the multifunction display shows the message Tire Pressure Check Tires, one or more of your tires are significantly underinflated. You should stop and check your tires as soon as possible, and inflate them to the proper tire inflation pressure as indicated on the vehicle's Tire and Loading Information placard or on the tire inflation pressure label. 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. Each tire, including the spare, should be checked at least once a month when cold. Inflate the tires to the recommended tire inflation pressure as specified on Rthe Tire and Loading Information placard on The function of the tire pressure loss warning system is limited or delayed if: Rsnow chains are mounted on your vehicle's tires. Rroad Ryou conditions are wintry. are driving on sand or gravel. Ryou adopt a very sporty driving style (cornering at high speeds or driving with high rates of acceleration). Ryou are towing a very heavy or large trailer. Ryou are driving with a heavy load or a load on the roof. Restarting the tire pressure loss warning system Restart the tire pressure loss warning system if you have: Rchanged the tire pressure Rchanged the wheels or tires Rmounted new wheels or tires X Before restarting, make sure that the tire pressures are set properly on all four tires for the respective operating conditions, using the Tire and Loading Information placard on the B-pillar on the driver's side or the tire pressure table on the fuel filler flap. X Observe the notes in the section on tire pressures (Y page 322). the driver's door B-pillar or Rthe tire inflation pressure label located on the inside of the fuel filler flap G Warning! The tire pressure loss warning system 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 or on the tire inflation pressure label located on the inside of the fuel filler flap. The tire pressure loss warning system 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 tire pressure loss warning system. The tire pressure loss warning system 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 G Warning! The tire pressure loss warning system can only give reliable warnings if you have set the correct tire pressure. If an incorrect tire pressure is set, these incorrect values will be monitored. A tire with insufficient pressure results in vehicle instability when driving, thus increasing the risk of an accident.