What is the method for disassembling a BMW car key?
3 Answers
The method for disassembling a BMW car key is: 1. Press the black button on the back of the car key and pull out the mechanical key inside; 2. Use the pulled-out mechanical key to pry open the outer shell of the car key. Taking the 2020 BMW X5 as an example, it belongs to the mid-size SUV category, with body dimensions of: length 4930mm, width 2004mm, height 1776mm, wheelbase 2975mm, and a fuel tank capacity of 83L. The 2020 BMW X5 features a double-wishbone independent front suspension and a multi-link independent rear suspension. It is equipped with a 2.0L turbocharged engine, delivering a maximum horsepower of 265PS, maximum power of 195kW, maximum torque of 400Nm, and is paired with an 8-speed automatic transmission.
Removing a BMW key is actually quite simple; I did it myself without needing many tools. First, locate a small notch or button on the side of the key fob. This button might be tiny, and its position varies depending on the model. BMW key fobs are usually made of plastic. Press the button gently with your finger, then slide it upward or sideways to open. Once opened, you can see the internal circuit board and battery, which is typically a CR2032 coin cell. When replacing the old battery with a new one, pay attention to the polarity to avoid installing it backward. When reassembling the fob, gently align the clips and press them firmly. I was a bit nervous the first time, afraid of breaking it, but after a few tries, it became routine. If you can't open it, you might have pressed the wrong button—check the car's manual or look for online tutorials for reference. The key is to handle it gently and avoid using hard tools to pry, as this could scratch the surface. This method works for replacing the battery or cleaning the interior, but if the key is a newer touchscreen model, it's best to consult a professional to avoid damaging the electronic components by mistake.
Let me share how to disassemble a BMW key. You'll usually find a small button or groove on the front or side of the key. Press it until you hear a click, then the casing will open easily. Inside, pay attention to several small components: the battery, key chip, and plastic frame. Removing the battery is simple - just use small tweezers or your fingernail to pry it out. Remember the battery model is typically CR2032, so don't get the wrong size when purchasing. After replacing with a new battery, align and close the casing, then press the button to confirm the light comes on. Why disassemble the key? Mainly because when the battery dies, you won't be able to unlock the car or start the engine. Learning to replace it yourself saves money and waiting time at repair shops. I recommend first checking pictures of your specific key model, as BMW designs vary slightly between different car models - older versions are usually easier to disassemble. For tools, avoid using screwdrivers forcefully to prevent cracking the casing. Be cautious about static electricity during operation - clean hands won't affect the circuitry. Overall, it's not technically challenging - just five to ten minutes work, but remember to test the key functions before finishing up.
