2010 Mercedes ML-Class Owner's Manual - Page 326

324 Flat tire If the tire inflation pressure is at least 20 psi (1.3 bar), inflate or deflate the tire to the correct tire inflation pressure (see Tire and Loading Information placard on the driver's door B-pillar): X Ralignment Relectric bolt air pump (required for vehicles with spare wheel with collapsible tire only) Practical hints To increase tire inflation pressure: Switch on the electric air pump. X To decrease tire inflation pressure: Version 1: Open vent screw F on pressure gauge G (Y page 322). Version 2: Press deflate button F located at the end of the filler hose. X For information on where to find the respective items, see "Where will I find ...?" (Y page 268) and (Y page 271). Drive to the nearest qualified workshop, e.g. an authorized Mercedes-Benz Center, to have the damaged tire replaced. X Recommended duration of use: A maximum of 300 miles (500 km) at 50 mph (80 km/h) or below with the recommended tire inflation pressure. X Contact an authorized Mercedes-Benz Center as soon as possible to obtain a new TIREFIT kit. X Bring used TIREFIT materials to an authorized Mercedes-Benz Center for proper disposal. X Replace your TIREFIT container every 4 years. Replacement containers are available at any authorized Mercedes-Benz Center. i Vehicles without spare wheel are not factory-equipped with the tools required for a wheel change such as a jack or a wheel wrench. Some tools required for a wheel change are specific to your vehicle. Contact an authorized Mercedes-Benz Center to obtain the tools approved for your vehicle. This section describes the wheel change using the tools approved and recommended for your vehicle. Lifting the vehicle G Warning! When jacking up the vehicle, only use the jack which has been specifically approved by Mercedes-Benz for your vehicle. The jack is designed exclusively for jacking up the vehicle at the jack take-up brackets built into both sides of the vehicle. Make sure the jack arm is fully seated in the jack take-up bracket. The jack must always be vertical when in use, especially on inclines or declines. The jack is intended only for lifting the vehicle briefly for wheel changes. It is not suited for performing maintenance work under the vehicle. To help avoid personal injury, use the jack only to lift the vehicle during a wheel change. Never get beneath the vehicle while it is supported by the jack. Keep hands and feet away from the area under the lifted vehicle. Always lower the vehicle onto sufficient capacity jackstands before working under the vehicle. Always engage the parking brake firmly and block the wheels with wheel chocks or other Mounting the spare wheel Introduction X Prepare the vehicle as described (Y page 320). X Take the following out of the vehicle: Rspare wheel Rjack Rwheel wrench wheel chock Rcollapsible