Hi toejam237,
it sure has one -- called GALA in German, translates into speed dependant loudness adaption.
But be aware that there is a software bug with the early models:
The setting (LOW/MID/HIGH) is lost every time you turn ignition off ... no way to circumvent this. You have to readjust the setting each time you start the engine.
To find out about the sw-release of your headunit:
switch radio on => radio/fm mode => press AUDIO for approx. 3 seconds
... the display will show
while the "buggy" CD1/CD2 (5P? 035 152) show a version below "0035" ...
... the CD2+MP3/CD3 (5P? 035 186) do work properly with versions above "0014" ... though there is another
problem with the FADE-option, which is reported to be solved with release "0017" and above.
We in Germany managed to get SEAT into changing all faulty headunits ... so maybe there is a chance for you to achieve the same if affected.
greets ... Klaus