2010 Mercedes C-Class Owner's Manual - Page 235

Tires and wheels Tire and Loading Information placard on the driver's door B-pillar (Y page 238). If necessary, add air to achieve the recommended tire inflation pressure. X If you have overfilled the tire, release tire inflation pressure by pushing the metal stem of the valve with e.g. a tip of a pen. Then recheck the tire inflation pressure with the tire gauge. X Install the valve cap. X Repeat this procedure for each tire. indicated on the vehicle's Tire and Loading Information placard or, if available, 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 233 Tire pressure loss warning system (Canada only) While the vehicle is being driven, the tire pressure loss warning system monitors the set tire inflation pressures by evaluating each wheel's rotational speed. This allows the system to detect a significant loss of pressure in a tire. If a wheel's rotational speed changes due to falling tire inflation pressure, you will see a corresponding warning message in the multifunction display. The tire pressure loss warning system may function in a restricted manner or with a delay Rwhen Rin the driver's door B-pillar or Rthe tire inflation pressure label located on the inside of the fuel filler flap snow chains are mounted to the vehicle the presence of ice and snow you are driving on a loose surface (e.g. sand or gravel) you are driving in a very sporty manner (involving rapid acceleration or high speeds in curves) you are driving with a loaded roof rack or heavily laden vehicle i The recommended tire inflation pressures for your vehicle can be found on Rthe Tire and Loading Information placard located on the driver's door B-pillar (Y page 238) Rthe tire inflation pressure label on the inside of the fuel filler flap The tire inflation pressures are not listed in the Operator's Manual. 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. Z Rwhen Rwhen Rwhen When the multifunction display shows the message Check Tire Pressure Soon, 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 G Warning! Operation