What are the reasons for the Dongfeng Fengshen AX7 remote key not responding?
2 Answers
If it is confirmed that this is the car's key and the unlock button is pressed but does not open, there are two possibilities: one is that the control unit of the key is damaged, and the other is that the key code does not match, requiring re-matching with a computer. Check if the car's anti-theft device has any issues. If not, check if the key is damaged or if there is a problem with the car's central control. Below is relevant information: 1. Solutions: Use the spare key to solve the problem. Replace the battery of the key. If the spare key is not nearby, you can ask a family member to press the unlock button on the spare key towards a phone call, which might open the car. 2. Advantages of the remote key: Regardless of day or night, there is no need to locate the keyhole, and unlocking and locking can be done remotely and conveniently. A weak radio wave is emitted from the owner's side, received by the car's antenna, identified by the electronic control unit (ECU) for the signal code, and then the system's actuator performs the action of opening/closing the lock.
I previously encountered a situation where the remote key for my Dongfeng Fengshen AX7 didn't respond, which is usually due to a dead key battery. Those small button batteries can drain after prolonged use and need replacement with a new CR2032 model. I've changed it myself at home several times, and it's quite simple. If replacing the battery doesn't solve the issue, it might be due to a short circuit or water damage inside the key, such as from accidentally dropping it or getting it wet in the rain. Additionally, if there are other electronic devices interfering with the signal around the vehicle, like high-voltage power lines or strong magnetic fields, the key may also malfunction. During my own tests, I tried bringing the key closer to the car—if inserting the key directly into the ignition still works normally, then the problem lies with the remote function. The most troublesome scenario is a fault in the car's receiver module, which requires professional diagnostic tools to fix. That's why I now always keep spare batteries on hand and check them periodically. If left unrepaired for too long, the car's anti-theft system might lock up, preventing the engine from starting, which would be even more troublesome—so it's best to address the issue promptly.
