What Happens If a Spare Car Key Is Not Used for a Long Time?

[McStella]

If a spare car key is not used for a long time, its battery will automatically drain. It is advisable to remove the battery when the key is not in use. The steps to replace a car key battery are as follows: 1. Remove the mechanical key; 2. Insert a flat-head screwdriver into the "open" slot at the bottom and gently pry it open; 3. Once a gap appears, use the screwdriver to carefully 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 the car key include: 1. Automatically closing the windows after turning off the engine; 2. Helping locate the car in a parking lot; 3. Automatically opening the trunk; 4. Remotely opening the windows. Precautions for using the key are: 1. Avoid placing it near electronic devices; 2. Do not expose the key to direct high temperatures; 3. Avoid using batteries with different power levels.