2000 Mercedes SLK-Class Owner's Manual - Page 211

Instruments and controls Tires, wheels Operation Driving Instrument cluster display Practical hints Car care Technical data Index 208 Storing spare wheel in wheel well Deflate spare tire: 1. Unscrew valve stem removal tool, which is a part of the valve cap, from tire valve. 2. Using the valve stem removal tool, open tire valve slightly by turning the tire valve insert counterclockwise to release air pressure. 3. When the tire air pressure has been released, remove tire valve insert (protect it from dirt and sand) using the previously removed tire valve cap. 4. Once all air is out of the tire, and the tire has collapsed to its original shape, reinstall the tire valve insert and valve cap. Place spare wheel in wheel well and secure it with air pump holder. Turn pump holder clockwise to its stop. 7. Operate air pump (approximately 5 minutes) until pressure gauge displays 36 psi (2.5 bar). 8. To switch off air pump, turn key in steering lock to position 0. 9. Unscrew filler hose from tire. Reinstall tire valve cap. Note: Excessive tire air pressure should be released using the vent screw.