Unscheduled service first thing Monday morning. Staff kept me informed of progress/outcome/go forward action. Actual duration from arrival to departure exceeded original estimate and updated estimate when problem identified. Identified problem (mice chewing harness) allowing moisture into electronics thereby triggering warnings, if correct, renews my confidence in the 2016 Pilot somewhat. Since then cruise has returned to slowing down when approaching vehicles to pass them. This particular problem started with vehicles on the left side, attempted corrections moved problem to vehicles on the right side, subsequent corrections worked for all except sometimes large vehicles on the right triggered slowdown - since Monday it seems to happen regularly with all sizes of vehicles on the right.