2011 Mercedes GLK-Class Owner's Manual - Page 272

270 Tire pressures message will appear in the multifunction display. applying the brakes and avoiding abrupt steering maneuvers. G Warning Tires and wheels If the Check Tire Pressure Soon message appears in the multifunction display, one or more tires are significantly underinflated. Stop the vehicle as soon as possible and inflate the tires to the pressure specified on the vehicle's Tire and Loading Information placard or (where available) in the tire pressure table. 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. Check all tires when cold, including the spare tire, at least once a month. The tires should be inflated to the recommended pressure. This information can be found: Ron the Tire and Loading Information placard The function of the tire pressure loss warning system is limited or delayed if: Rsnow Rroad chains are mounted on your vehicle. conditions are wintry. Ryou 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 cargo (in the vehicle or 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, refer to the Tire and Loading Information placard on the B-pillar on the driver's side or the tire pressure table on the inside of the fuel filler flap to ensure the tire pressure in all four tires is set correctly for the current operating conditions. X Observe the notes in the section on tire pressures (Y page 266). on the B-pillar on the driver's side or Rin the table for the tire pressure 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.