а где кнопочка рандома?и где пункт Speed Volume?

Setting the speed-dependent
volume
To compensate for increasing noise in
the passenger compartment with
increased vehicle speed, your unit is
equipped with a speed-dependent
volume control (Speed Volume). This
function will increase volume as speed
likewise increases.
You can set the volume increase in
6 levels. The higher the level you
choose, the greater the increase in
volume.

Random Play
The CD music tracks are played in
random order (Random Play).
Start Random Play with
Display, e.g.:
You can still operate the keys for
skipping tracks, fast forward/
reverse while using Random Play. Thus,
if you want, you can skip a track you do
not want to listen to.<
End Random Play with
The random play function will be interrupted,
and will begin playing again
starting at the point where it was interrupted.

Про увеличение звука при увеличении скорости чётко написано:

Просто я чё-то не ощущаю, что звук возрастает.

Stealth
там по любому ощущаешь, спутать невозможно!

Stealth
попробовал, реально ничего не выходит! хз что делать...