Acura MDX 2017 Owner's Manual page 505

uuRemote Control and Wireless Headphone Care
■
Wireless Headphone
If there is no sound coming from the wireless headphone, replace the battery.
Cover
Battery
504
* uReplacing the Battery
Battery type: AAA
1. Remove the screw.
2. Open the cover.
3. Make sure to replace the battery with the
correct polarity.