Subsequently, a federal investigation concluded that the previous remedy did not completely resolve the issue. Apparently, the fires are starting because manufacturing defects can cause the vanity lamp’s wiring to short. Specifically, screws that are used to mount the sun visor to the vehicle can accidentally pierce the vanity lamp’s wiring and cause an electrical short. Chrysler will notify owners, and a remedy plan is still being developed.
Source: NHTSA | Image via Fiat Chrysler Automobiles: Corporate