2003 Mercedes ML-Class Owner's Manual - Page 259

Practical hints Flat tire Inflating the spare wheel with collapsible tire Take the electric air pump out of the rear cargo compartment ( page 238). Warning! Open flap on air pump. Pull out electrical plug 2 and air hose with the pressure gauge 3. Close the vent screw 4. Remove the valve cap from the spare wheel tire valve. Screw the union nut 1 with air hose 3 on to the tire valve. Insert electrical plug 2 into the electrical outlet in the front passenger footwell or rear cargo compartment ( page 158). Start the engine. Switch on the air pump. Operate air pump until the pressure gauge displays 61 psi (4.2 bar) 1 Union nut 2 Electrical plug 3 Air hose with pressure gauge 4 Vent screw This takes about eight minutes for the collapsible tire. The air hose 3 and the union nut 1 can become hot during inflation. Please exercise appropriate caution. ! Do not operate the electric air pump longer than eight minutes without interruption. Otherwise it may overheat. You may operate the air pump again after it has cooled off. Switch off the air pump. Turn off the engine. If the tire pressure is above 61 psi (4.2 bar), release excess tire pressure using the vent screw 4. G Observe instructions on air pump label. 259