How Long Can a Car Key Last When It Shows Low Battery?
1 Answers
When the key shows low battery, it can typically last for 3 to 7 days. The working principle of a car key is: it emits a weak radio wave from the owner, which is received by the car's antenna. The electronic controller then identifies the signal code, and the system's actuator performs the action of unlocking or locking. The method to replace the car key battery is: 1. Remove the mechanical key; 2. Insert a flat-head screwdriver into the 'open' position at the bottom and pry it up and down; 3. Once a gap appears, use the screwdriver to pry open the key along the gap; 4. Remove the old battery and replace it with a new one; 5. Reassemble the key. The functions of a car key include: 1. Remote locking and unlocking of doors; 2. Press and hold the lock button after turning off the engine to close the windows; 3. Press the horn-shaped button to locate the car.