Why can't the Discovery 4 detect the key?
3 Answers
The reasons why the Land Rover Discovery 4 cannot detect the key are a dead smart key battery or a locked steering wheel. Below is a detailed explanation of these issues: Dead smart key battery: This situation occurs when the smart key battery is dead, and the start system cannot detect the weak signal emitted by the smart key. It is recommended to pick up the smart key and place it on the start button, then press the button to start the vehicle. Locked steering wheel: A locked steering wheel is an anti-theft feature. When the car is turned off, turning the steering wheel from the centered position to a certain angle in one direction will lock it. In this state, the one-touch start function will not work.
My Discovery 4 sometimes doesn't recognize the key at all, which is really frustrating. It's mostly likely that the small battery in the key is dead - these button batteries usually last 1-2 years, and replacing it solves the problem. It could also be signal interference from other electronics, like when placing phones or wireless earphones together with the key. Last time this happened, I temporarily used the mechanical key to open the door and found the starter button slot under the steering wheel to force ignition. I recommend keeping a spare battery in the car and regularly checking the key's functionality - don't get lazy. Over time, dust accumulates in the key slot - cleaning it might help. If all else fails, take it to the shop for professional repair. Safety first.
I found that the key not being detected is often due to battery issues or signal interference. If the key battery voltage is low, it can't emit signals—try replacing it with a CR2032 battery. Signal interference is significant near sources like Wi-Fi or Bluetooth devices. Test with the spare key to see if it also fails; if it works normally, the main key might be damaged or have poor contact. Check the vehicle receiver's position—it might be loose or dirty. Preventive measures: Avoid prolonged exposure of the key to water or high temperatures, and don't stack it with metal objects to prevent signal disruption. Simple maintenance can extend the key's lifespan.
