See also:

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-cond ...

Problems with PARKTRONIC
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Adjusting the sound settings
You can select the sound settings in the audio CD/DVD/MP3, video DVD and AUX modes. Switch on an audio operating mode (e.g. audio CD mode). Select Treble or Bass using the buttons on the remo ...