See also:

Station preset
Preset buttons ...

How to play back
Press the button and select the “BTA” (type C audio)/“BT Audio” (type D audio) mode. ...

Checking the fluid level
1) “MAX” level mark 2) “MIN” level mark Check the fluid level monthly. Check the fluid level on the outside of the reservoir. If the level is below “MIN”, add the recommended brake fluid to “MAX” ...