Why is the car key not working properly?
2 Answers
Interference sources, dead battery, internal malfunction, or vehicle antenna may cause the key to be unresponsive. Here is a related introduction about car keys: Key principle: First, the car key consists of two parts, a transmitter and a receiver. When the owner presses the button on the car key, the key emits a signal, which is received by the antenna on the top of the car. After authentication by the vehicle body control module, the unlocking or locking action is executed. Solution: Remove all aftermarket devices installed inside the car and then test drive. Replace the key battery and test drive to see if there are any fault symptoms. You can also use the mechanical key to unlock the door and place the smart key on a position with a key symbol inside the car for emergency ignition.
I've encountered situations where the key fob doesn't work, mostly due to a dead battery. The coin cell batteries in car key fobs have a short lifespan, typically lasting only one or two years before they run out, causing unresponsive or delayed button responses. The checking method is simple: open the key fob to check the battery model and replace it with a new one. Signal interference is another critical factor. For example, parking in areas with dense electronic devices or near metal structures can block the signal. Try moving closer to the car or changing your position to unlock it. Internal circuit aging or physical damage, such as dropping the key or water exposure, can also affect sensitivity, requiring professional repair. For prevention, I regularly replace the battery, clean the buttons of grease, and avoid placing the key near my phone to prevent interference. If not addressed promptly, you might get locked out of the car, causing inconvenience. Safety first—it's advisable to always keep a spare key for emergencies.
