2011 Mercedes R-Class Owner's Manual - Page 308
2011 Mercedes R-Class Manual
Page 308 highlights
306 Flat tire to avoid burning yourself when using the equipment. Version 2 X Version 1: open flap :. X Version 1: pull connector = and the air hose with pressure gauge ? out of the housing. X Version 2: pull connector = and the air hose out of the housing. X Version 1: make sure that the pressure release screw on pressure gauge ? is closed. X Remove the cap from the valve on the collapsible spare wheel. X Screw union nut A on the air hose onto the valve. X Make sure on/off switch ; of the electric air pump is set to 0. X Insert connector 3 into the socket in the footwell of the 2nd row of seats (Y page 265). Roadside Assistance ! Do not operate the electric air pump for longer than eight minutes at a time without a break. It may otherwise overheat. The air pump can be operated again once it has cooled down. X Pump the tire to the specified tire pressure. The specified tire pressure is printed on the yellow label of the emergency spare wheel. X When the specified tire pressure has been reached, press on/off switch 2 on the electric air pump to 0. The electric air pump is switched off. X Turn the SmartKey to position 0 in the ignition lock. X ! None of the other sockets or cigarette lighters are designed for operating the electric air pump. X Make sure that the SmartKey is in position 1(Y page 149) in the ignition lock. X Press on/off switch ; on the electric air pump to I. The electric air pump is switched on. The tire is inflated. G Warning The air hose and the union nut can become hot during inflation. Exercise proper caution Version 1: if the tire pressure is higher than the specified pressure, open the pressure release screw on pressure gauge 4 until the correct tire pressure has been reached. X Version 2: if the tire pressure is higher than the specified pressure, press pressure release button 6 until the correct tire pressure has been reached. X Unscrew union nut A on the air hose from the valve. X Screw the valve cap onto the collapsible spare wheel valve again. X Version 1: stow plug = and the air hose behind flap :. X Version 2: stow plug = and the air hose in the lower section of the pump housing. X Stow the electric air pump in the designated place in the vehicle. Lowering the vehicle G Warning Pump up the collapsible spare wheel before lowering the vehicle. You could otherwise damage the wheel rim.