How to Replace the Battery in a BMW 7 Series Key?

[SanClara]

Here is the method to replace the battery in a BMW 7 Series key: 1. Remove the mechanical key. You will see two holes—one for the mechanical key and the other for removing the key cover. 2. Insert the mechanical key into the hole for removing the key cover and gently pry it open using the lever principle to access the battery compartment. 3. Use a toothpick to remove the old battery and insert a new one. 4. Place the battery back into the car remote key in the reverse order of removal. Additional notes: When replacing the battery, remember to check for signs of corrosion in the battery and battery compartment. Sometimes, dead batteries may crack or leak corrosive chemicals. If you notice signs of corrosion, carefully clean the battery compartment before installing the new battery. If your remote stops working, it might be due to battery damage.