Acura RDX 2019 Owner's Manual page 549

Bulb
Socket
Taillights, Brake and Rear Side Marker Lights
Taillights, brake and rear side marker lights are LED type. Have an authorized Acura
dealer inspect and replace the light assembly.
4. Turn the socket counterclockwise and
remove it.
5. Remove the old bulb and insert a new bulb.
uuReplacing Light BulbsuTaillights, Brake and Rear Side Marker Lights
547