Some 2015-2019 Edge vehicles build on or before 5-Nov-2018 may exhibit snow and/or ice accumulation below the wiper blade park position, causing the wipers to have intermittent operational issues. If normal diagnostics do not result in a root cause determination, replace the drivers side wiper motor with updated service part FT4Z-17508-H, and make sure the customer is advised to keep the cowl area clean of ice and snow. Refer to Workshop Manual (WSM), Section 501-16 and applicable labor operations in Section 11 of the Service Labor Time Standards (SLTS) Manual.