Resetting the Power Tailgate Control Unit
WARNING: This page is about a different car, the 2011 Honda Pilot, 2010 Honda Pilot, and 2009 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.
If the battery terminal is disconnected or No. 23 (10 A) fuse in the under-hood fuse/relay box is removed while the power tailgate is operating, the power tailgate will not be able to open or close automatically until it is reset. To reset the system, fully close the tailgate manually. Once the battery terminals are reconnected or No. 23 (10 A) fuse in the under-hood fuse/relay box is replaced, the power tailgate system will automatically reset. Make sure the power tailgate operates properly.