| Pos. | spare part no | Name |
| 1 | - | Press to select Radio, CD or AUX mode. |
| 2 | - | Click to turn up the volume |
| 3 | - | Click to turn down the volume |
| 4 | - | Press and release to scroll through preset radio stations or CD tracks. Press to search forward or backward for the next or previous station/CD track |
The audio block is controlled by multi-link resistive switches. These switches are connected to the infotainment system control module (ICM) or with on-board audio module (IAM) (depending on audio block level) by means of a clock spring.
For more information, see the chapter: Audio System (415-01, Description and principle of operation).
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