2003 Mercedes SLK-Class Owner's Manual - Page 243

Practical hints Flat tire Before storing the jack in the trunk, it should be fully collapsed, with pin and handle folded in. Inflating the collapsible spare tire Take the electric air pump out of the trunk ( page 207). Open flap 1 on air pump. Pull out electrical plug 4 and air hose with pressure gauge 2. Unscrew valve cap from spare wheel tire valve. Screw union nut 3 with air hose 2 on to the tire valve. Insert electrical plug 4 into vehicle cigarette lighter socket. 1 Flap 2 Air hose with pressure gauge and vent screw 3 Union nut 4 Electrical plug Turn key in steering lock to position 1 ( page 29). Press I on the electric air pump switch. The electric air pump should now switch on and inflate the tire. Inflate the collapsible tire to around 36 psi (2.5 bar). This takes about 5 minutes for the collapsible spare tire. Airhose 2 and union nut 3 can become hot duration inflation. Warning! G Observe instructions on air pump label. ! Do not operate the electric air pump longer than 8 minutes without interruption. Otherwise it may overheat. You may operate the air pump again after it has cooled off. Press 0 on the electric air pump switch. The electric air pump should now be switched off. Turn key in steering lock to position 0. If the tire pressure is above 36 psi (2.5 bar) release excess tire pressure using the vent screw. 243