Ford will notify owners, and dealers will perform a software update to the fully integrated vehicle controller, which eliminates the possibility of excessive pressure in the valve block assembly. Some vehicles will have a rear wing hydraulic check valve installed and will have the o-rings and the filter replaced, if needed. The repairs will be performed free of charge. The recall began November 30, 2018. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 18S29.