Three problems related to tailgate have been reported for the 2013 Ford Explorer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Ford Explorer based on all problems reported for the 2013 Explorer.
Leaks from poor quality welds above rear tailgate. Creates mold in carpet abs spare tire insulation. Known problem on vehicle. Addition leaks in sunroof due to poor drainage causing motor to fail. Paint bubble fail on hood (known issue on Explorers and expeditions).
I recently have noticed water on the 3rd seat belts. Took it to my mechanic who thought the water was coming from a plug in the rear. Sealed it but still had issues. Took the panels off in the trunk and ran the water test again. Found the issue was coming from the sides of the tailgate at the top where the weld appears to be cracking letting water in on both seatbelts and into the spare tire wheel well. I have seen other comments to the same issue. Happens anytime water is hitting the car like rain or car wash.
The weld seam sealant used above the tailgate has failed and begun cracking, allowing rainto enter through the poorly done welding, and drips into my cargo area through the rear speakers, down the seatbelt, and onto my seats. Luckily I have a cargo liner which helps avoid my seats from getting soaked. This happens whether parked or moving.