What is the reason for keyless entry malfunction?
2 Answers
The causes of keyless entry malfunction are varied, including issues with the system, wiring, and battery. For a specific diagnosis, it is recommended to visit a 4S shop. When using a smart key, avoid placing it near electronic devices. Since smart keys operate using low-intensity radio waves, they may malfunction in the presence of magnetic interference. Frequently placing the smart car key near a mobile phone can lead to interference from the phone's frequency, resulting in malfunction. If the smart car key gets wet, the internal circuits may short-circuit, also causing malfunction. In case the smart key gets wet, open the casing, lay it flat, and use a hairdryer to dry it before taking it to a repair shop for inspection. Avoid shaking the key vigorously, as this may cause water to spread to other critical circuits. Also, refrain from immediately using the remote to unlock the car, as this could lead to the circuit board burning out.
I recently encountered a keyless entry malfunction issue, and it was such a headache. That day, I was in a hurry to get to a meeting, but the car door wouldn't open no matter what. I kept pressing the key fob button, but there was no response. I thought the car had a major problem. Luckily, a colleague reminded me to check the key battery first. After replacing it with a new one, everything worked fine again. This type of malfunction is usually caused by several factors: First, the battery in the remote key is depleted—the coin cell battery typically lasts about a year before needing replacement. Second, signal interference, such as strong magnetic equipment in the parking lot or a phone charger nearby, can disrupt wireless signal transmission. Third, the internal circuit board or buttons in the key may be damaged, especially after being dropped. Fourth, the vehicle's receiver module might have an issue, such as short-circuiting due to water exposure on rainy days. It's advisable to carry a spare battery, regularly clean the key contacts to prevent rust, and if the problem persists, visit a professional repair shop to diagnose the circuit system—don't neglect it and risk delaying your plans. Though a minor issue, it can be quite annoying, so addressing it promptly saves trouble later.
