Second consecutive decline, though, actually affected more vehicles.
But the average event size rose, Sedgwick says.
The two automakers' recalls affect a combined total of 530,000 vehicles that have experienced operational issues posing safety risks.
Company reports that de-icing agents can cause frame corrosion.
Palisade wipers can fail in snowy and icy weather.
Report shows number of effected units was at a nine-year low.
Safety issues affected 8.6 million vehicles.
36 states alleged the used-car retailer sold cars with open safety recalls without letting buyers know.
U.S. auto safety regulators investigate whether a New York Ford dealership delivered a new vehicle with an outstanding safety recall.
The number of potentially affected vehicles has also fallen with 4,622,752 vehicles affected so far.
