08 Expedition EL Trailer Battery Charge Relay
Does anyone know why when the trailer battery charge relay is removed it will not allow the engine to turn over. The security lock comes on and the vehicle will not start until the relay is put back in. I had the engine running and removed the relay and the engine shut off right away. What happens if the relay would fail while driving down the highway. Will the engine shut off? If so that would not be a good situation.