What are the reasons why the remote key of Besturn X80 fails to function?
4 Answers
Here is an analysis of the reasons why the remote key of Besturn X80 fails to function: 1. The key battery is dead: A dead key battery is the main reason why the remote key fails to lock or unlock the car. In this case, simply replace the key battery with a new one. After replacing the battery, the key must be reset; otherwise, it will not function properly. 2. The sensing distance is too far: When the distance between the key and the car is too far, the sensing device on the key cannot connect with the car, leading to failure. In this situation, simply get closer to the car before using the remote key. 3. Signal interference: If the car is parked near a broadcast tower or in an area with many electronic devices, the remote key may also fail to function. In this case, use the mechanical key to lock or unlock the car. 4. The car sensor is damaged: If the key battery is sufficient and there is no signal interference, but the remote key still fails to lock or unlock the car, it is likely that the car sensor is damaged. In this situation, take the car to a repair shop or 4S store for professional inspection and repair.
Last time my car remote stopped working, after struggling for a long time I realized it was just a dead coin battery. The key battery usually lasts about 2-3 years, you can buy a CR2032 battery and replace it by unscrewing the key case. If the key has been soaked in water or severely dropped, the circuit board inside might be short-circuited - you'll need to open it to check for green corrosion spots. Parking near banks or LED billboards often causes malfunctions as these places have particularly strong signal interference. Here's a tip: if the main key suddenly stops working, immediately try the spare key. If the spare works, it's basically a problem with the key itself. Cheap chargers plugged into the car's cigarette lighter can also interfere with the signal - these details are all worth checking.
If the remote control fails, don't panic. I recommend troubleshooting in three steps: The most likely cause is the key battery voltage dropping below 2.8 volts – just check it with a multimeter. Next, inspect the key circuit board. I've repaired many keys where the button contacts were oxidized or the crystal oscillator was desoldered – simply clean the solder joints with alcohol. Lastly, it could be an issue with the vehicle's receiver module. For the Besturn X80, the receiver is often located under the front passenger carpet, where water damage can easily fry the chip. If a newly paired key suddenly stops working, it's probably due to improper pairing – you'll need to repeat the synchronization procedure: close the doors, press the start button five times, and immediately press the key's lock button when the hazard lights flash. For such electronic faults, avoid forcing the door open – using the mechanical key won't trigger the anti-theft system.
I usually keep my car key in the side pocket of my bag, but once it suddenly stopped working and I realized it was due to interference from being placed next to wireless earbuds. Electronic keys are most vulnerable to strong magnetic fields and humid environments—devices like demagnetizers at supermarket checkout counters or electric vehicle charging stations can block the signal. For a quick fix, try this method: press the button while holding the key against your chin, as the human body can amplify the signal. If the key's indicator light doesn't light up when pressed, it could mean either the battery is dead or the circuit is fried. When replacing the battery, be careful not to lose the anti-theft chip inside—it's a tiny black square, about the size of a sesame seed. Without it, you won't even be able to start the car. It's also safer not to keep the spare key on the same keyring as the main one; store them separately for better security.
