See also:

Service menu
In the Serv. menu you can: • call up display messages • restart the tire pressure loss warning system (Canada only) • check the tire pressure electronically • call up the service due date ...

Additives
Do not use any additives in the engine oil. This could damage the engine. ...

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-condition ...