SDL remote control allows a mobile application to change the current audio source. When an application sets the audio source to RADIO_TUNER, the vehicle is supposed to use the last known/used radio band (AM/FM/XM) and frequency/station of the tuner. However, the application has no knowledge of last used radio band before sending such a request. The vehicle may or may not store the last used radio band. Therefore, the result of setting the audio source to RADIO_TUNER is unknown to the application. It is better for an application to set the audio source directly to AM, FM, XM (XM is for Sirius XM) or DAB (digital audio broadcasting, including DAB+).
The Steering Committee voted to accept this proposal, with the following revision: the Motivation section of the proposal should reference that this is an update to proposal SDL 0099, and include a link to that proposal.
The proposal was revised to incorporate these revisions on July 11, 2018.