What is the reason for the Emgrand key not being detected after replacing the battery?
2 Answers
There are three reasons why the Geely Emgrand shows 'key not detected' after replacing the battery: the replaced battery is dead, there is interference, or there is an issue with the receiver. Dead battery: If the remote control battery has been used for a long time, it may run out of power. In this case, you can only use the emergency start method by placing the remote close to the one-button start to allow the car to start normally. Interference: If the remote key is too close to a mobile phone, it may sometimes be interfered with by the phone's signal, causing the dashboard to display 'key not detected.' In this situation, simply move the phone away from the key to increase the distance. Receiver issue: If there is damage to components such as the circuit or sensors, the key may not be detected, and the car will need to be taken for repairs.
I often encounter this issue during car repairs, especially with Emgrand owners after replacing key fob batteries. Possible causes include: 1) Incorrect battery installation with reversed polarity cutting off power supply; 2) Poor-quality batteries - either expired or generic brands with insufficient voltage; 3) Moisture damage or physical circuit damage inside the key; 4) The anti-theft system requiring reprogramming. For troubleshooting: First verify battery orientation is correct; Try fresh compatible batteries; If unsuccessful, visit a dealership for professional diagnostic tools or key reprogramming. Don't underestimate this issue - address it promptly to prevent starting problems. Last case I handled involved a customer whose repeated battery replacements failed, ultimately due to a burnt key chip. Remember to include key maintenance during regular vehicle servicing as preventive care.
