How to Open the Car Door When the BMW Key Battery Dies?
1 Answers
First, you need to pull out the mechanical key from the smart key and use it to open the car door. Then, press the key against the logo side of the ignition switch. Place the side of the key with the logo firmly against the one-touch start switch, hold it for a few seconds, and then press down to start the car. The key contains a battery. When the battery dies, you can purchase a replacement button battery nearby and install it.