Why Can't the Car Key Open the Door?

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The reasons why the car key cannot open the door are: 1. The button response is not sensitive; 2. The car key battery is too low; 3. Environmental factors, such as strong signal interference or shielding; 4. The anti-theft system malfunctions; 5. The remote control needs to be re-matched and encrypted. Lifespan of car keys: Under normal circumstances, the lifespan of a regular remote key is generally 2 to 3 years, depending on the actual usage frequency, and it varies among different car models. It's difficult to determine the exact replacement time, but you can replace the battery in advance. Smart keys consume slightly more power, but the original battery inside is more durable. If the battery runs out, don't worry—remote keys all have a spare mechanical key. Some automatically pop out when a button is pressed, while others require pressing a hidden latch to open the back cover and retrieve it. Once retrieved, you can find the keyhole on the door to open it.