On certain trucks, the spline teeth in the windshield wiper arm(s) could wear and break. If this happens, the windshield wipers may not work properly.
Safety Risk
Windshield wipers that don't work could affect a driver's visibility and increase the risk of a crash.
Corrective Actions
Daimler Truck North America (DTNA) will notify the owners by mail and instruct you to take your truck to a DTNA authorized service facility to inspect, and if necessary, replace the windshield wiper arm(s) and linkage parts.