What Causes the Ford EcoSport to Fail to Detect the Key?

[McDeclan]

Ford EcoSport's inability to detect the key may be caused by loose fuses or relays, or it could be due to a dead battery. Below are the reasons for key detection failure: 1. Dead key battery: If the key's battery is dead, the door cannot be opened, and replacing the battery will resolve the issue. 2. Dead car battery: If the car's battery is dead, the sensors in the car will not have power, making it impossible to detect the key. 3. Faulty sensor module: There might be an issue with the key's sensor or the sensor module itself. Additional information: The car's smart key is a common keyless entry system, also known as the smart key system. It consists of a transmitter, a remote central locking control module, a driving authorization system control module, three receivers, and the related wiring harnesses that form the control system.