2008 Mercedes CLS-Class Owner's Manual - Page 418

Practical hints Flat tire Screw union nut 5 onto the tire valve. Insert electrical plug 3 into vehicle cigarette lighter socket ( page 249). Turn the SmartKey in the starter switch to position 1. or Press the KEYLESS-GO* start/stop button on the gear selector lever once without depressing the brake pedal. Press I on electric air pump switch 2. The electric air pump should now switch on and inflate the tire. Inflate the tire to approximately 51 psi (3.5 bar). This takes about 5 minutes for the collapsible tire. Air hose 4 and union nut 5 can become hot during inflation. Exercise proper caution to avoid burning yourself when using the equipment. ! Do not operate the 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 electric air pump switch 2. Turn the SmartKey in the starter switch to position 0. or Press KEYLESS-GO* start/stop button on the gear selector lever twice without depressing the brake pedal. The electric air pump should now be switched off. If the tire inflation pressure is above 51 psi (3.5 bar), release excess tire inflation pressure using the vent screw. 1 Flap 2 Air pump switch 3 Electrical plug 4 Air hose with pressure gauge and vent screw 5 Union nut Open flap 1 on the air pump. Pull out electrical plug 3 and air hose with pressure gauge 4. Make sure the vent screw on air hose 4 is closed. Remove the valve cap from the tire valve. 417