What are the reasons why the car key cannot be recognized and the car cannot be started?
2 Answers
Here are the reasons why the car key cannot be recognized and the car cannot be started: 1. Insufficient battery power: When the commonly used key cannot unlock or start the car, you can take out the spare key and try it. If it works normally, it means there is a problem with the commonly used key. In most cases, it is caused by insufficient battery power in the key. Generally, the battery of a remote key is a button battery with a voltage of 3-3.5V. If the voltage is insufficient, the battery needs to be replaced. 2. External interference: It is known that the remote key needs to emit a signal to unlock the vehicle. Since the signal is a wave, it may be interfered with by signals of the same or similar frequency. For example, during the college entrance examination period, if you park your car near the examination venue, you may find that the remote key does not work no matter what you do. Therefore, when the remote key does not work, check if there are any signal base stations, high-voltage power towers, or large electronic screens nearby. If there are, use the mechanical key to open the door, drive the car away, and then try again.
I've encountered the issue of the car key not being recognized several times, mainly due to the remote key's battery running out of power. The battery lifespan typically lasts one to two years, and once it's depleted, the signal can't be transmitted, making it impossible for the car system to detect the key. Secondly, the key itself might be damaged, such as from being dropped or exposed to water, which can affect the built-in chip or antenna. If you're in an area with strong signal interference, like a parking lot with dense surveillance cameras or near a shopping mall, external electronic interference can temporarily block the signal. Another possibility is a malfunction in the vehicle's receiver or a system pairing error, which would require a visit to a repair shop for reprogramming. In case you suddenly face this problem, don't panic. First, try using a spare key or check the vehicle's manual for emergency start methods, such as some cars having a manual start slot for inserting the key. It's advisable to keep a new battery at home and check it every six months to avoid compromising travel safety and convenience.
