What are the reasons for the malfunction of Mitsubishi ASX remote key?
2 Answers
Possible reasons for the sudden malfunction of a car remote key are as follows: Battery: The battery is dead or has poor contact. Control module: Failure of the timing control module in the remote key can also cause the remote to stop working. Remote transmitter: Aging of the remote transmitter antenna in the car, among other issues, can also lead to this situation. Here are the signs of a dying battery: Remote range: For example, if you could usually unlock the car from five or six meters away, now you might have to stand right next to the door to unlock it. Occasional malfunction: For instance, if you used to open the door with a single press, now it might take two or three presses to open the door. Indicator light on the car key: If the indicator light on the car key becomes increasingly dim or flickers.
I remember the Mitsubishi ASX remote key often fails due to the old issue of battery drain. The small button battery loses voltage over time, causing no response when pressing the button—replacing it with a new one usually solves the problem. Secondly, the key itself might be faulty, with internal circuit short circuits or worn-out buttons getting stuck, especially if accidentally dropped or exposed to water, which can damage internal components. A faulty vehicle receiver can also lead to poor signal reception. Sometimes, electromagnetic interference sources nearby, like phone charging stations or signal towers, can block the key signal, rendering it unusable. As someone who loves tinkering with car electronics, I suggest first trying a battery replacement. If that doesn’t work, use the spare key to test whether it’s a key issue. If it still fails, take it to a professional shop to check the vehicle module. Regular key maintenance can avoid such headaches—keep it away from heat sources.