SLK/R171: Volume control
This option will tend to be come very annoying, as you will find yourself constantly turning the volume up. Search the threads, many have tried and/or do disconnect the mic to prevent the radio from changing volumes.
The lowest setting is 3db which still is annoying when driving with windows down and comming to a stop then speeding up a little and stopping again. the volume gets lower and lower and lower.
Dealer will not (can not) disable this system.
Most people say that they have to keep adjusting the volume up and down, and that the auto-volume feature doesn't appear to work.
A (very) few people have said that it works fine for them.
Even fewer people have said that their service guy told them that this feature had been turned off in the software.
The bottom line seems to be that no-one really knows how to test it out effectively, and we all have to live with it (i.e. not working as you'd expect).



