NHTSA Complaint #11614975 — 2023 FORD BRONCO

Front pinion seal leak is detected at where the front drive shaft meets the front differential. Ford attempted to fix it with a pinion seal replacement and the leak is still unresolved, second attempt was done by changing the front differential fluid which also did not resolve the issue. This issue is fairly common amongst bronco owners on forums and will be hard to come to the users’ attention unless the user checks under the vehicle so the problem may be more widespread than reported. The undetected loss of front differential fluid may cause overheating of the front differential over time as the fluid levels become low and potentially cause a lockup at high speed when the vehicle is used in 4A AWD mode. The leak can also be a fire hazard.