The best place to start when troubleshooting any electrical problem with your fourth generation (2018, 2019, 2020 and probably also the 2021, 2022 and 2023 model years) Ford Expedition SUV is to check for a blown electrical fuse or a faulty relay in either the engine bay or the interior passenger compartment electrical panels. Check out my DIY instructions for the procedure (with the compatible replacement fuse types) by clicking on the text link or thumbnail picture below.
2018-2020 Ford Expedition Electrical Fuse Replacement Guide
