Mercedes-Benz S-Class Owners Manual

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Refrigerant of the air-conditioning system
The air-conditioning system is filled with R134a refrigerant and a special PAG lubricant. Never use refrigerant R 12 (CFC) or mineral lubricants. Otherwise, you could damage the air-conditio ...

Displaying service messages
  Switch on the ignition.   Press or on the steering wheel to select the Serv. menu.   Press or to select the ASSYST PLUS submenu and press to confirm. The service due d ...

Tachometer
The red band in the tachometer indicates the engine's overrevving range. ! Do not drive in the overrevving range, as this could damage the engine. The fuel supply is interrupted to protect the ...