How to Replace the Battery in a BMW 320 Key?
2 Answers
BMW 320 key battery replacement method is: 1. Remove the key from the remote and locate the small square on the key; 2. Take out the old battery and install the new one with the positive side facing up. The BMW 320 is a mid-size sedan with body dimensions of 4531mm in length, 1817mm in width, and 1421mm in height. In terms of power, the BMW 320 is equipped with a 2.0T turbocharged engine, delivering a maximum power of 135kw and a maximum torque of 300nm. The engine is paired with an 8-speed automatic transmission from ZF in the drivetrain system.
I've changed the battery in my BMW 320 key several times at home, and it feels quite simple. The key is usually a rectangular structure with small gaps along the edges. You can gently pry it open with a flat-head screwdriver or a coin, but don't use too much force to avoid scratches. Inside, there's a CR2032 coin cell battery, which you can buy for a few bucks at supermarkets or convenience stores. When replacing the old battery with a new one, make sure the positive side faces upward for proper contact, or the key's sensor might malfunction. After reassembling, press the key a few times to test the locking function and ensure everything works fine. For regular car maintenance, I recommend checking the key battery life periodically—usually replacing it once a year saves both money and hassle. Doing it yourself is much cheaper than going to a shop, requires simple tools, and the whole process takes no more than five minutes.
