When driving after dark, the automatic dimming rearview mirror reduces the glare from headlights behind you, based in inputs from the mirror sensor. This feature is always active.
The auto dimming function cancels when the shift position is in R.
Honda Civic Owners Manual. Apple CarPlay Menu
Phone
Access the contact list, make phone calls, or listen to voice mail.
Messages
Check and reply to text messages, or have messages read to you.
Music
Play music stored on your iPhone.
Apple CarPlay
Only iPhone 5 or newer versions with iOS 8.4 or later
are compatible with Apple CarPlay ...