Speed Compensated Volume
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The ACM adjusts the audio system volume based on the VSS signal to compensate for speed and wind noise.
When a MyKey® is in use and the MyKey® radio volume limiter is enabled, the speed compensated volume is disabled.