How Long Does the Car Key Battery Last?

[Elaine]

Normally, it can last about two years. Generally, when the key battery is low, there will be a reminder on the dashboard, and you can replace it in time. Pay attention to battery usage: If the car key is already running low on power, you can open your car key to check if there is a mechanical key inside and look for the keyhole on the door where the mechanical key can be inserted. Nowadays, many car manufacturers hide the keyhole for the sake of vehicle aesthetics, usually located under the decorative cover of the driver's door handle. However, keyless start vehicles may not have a mechanical key, so owners should pay more attention to battery usage. Keyless entry: If the car you drive is equipped with keyless entry, it is best to replace the car key battery early, preferably after one year of use. This is because such keys automatically unlock the vehicle when they are near it, without the need to press the unlock button. The operational principle involves intermittently sending signals automatically, which consumes more power. Replacing the car key battery is actually quite simple—just buy the correct battery model and know how to remove and place the new battery.