What is the method for replacing the battery in a BMW car key?
2 Answers
The method for replacing the battery in a BMW car key is as follows: 1. Press the small square button on the key to remove it from the remote control; 2. Insert the key into the hole below the battery compartment cover to open it; 3. Remove the old battery and replace it with a new one. Taking the BMW X1 as an example, its body dimensions are: length 4565mm, width 1821mm, height 1620mm, wheelbase 2780mm, and fuel tank capacity 61L. The BMW X1 is equipped with a 1.5T turbocharged engine, with a maximum power of 103kW and a maximum torque of 220Nm, paired with a 7-speed dual-clutch transmission.
Last year, I helped a friend replace the battery in their BMW car key, and the whole process was quite simple. Most BMW keys use a CR2032 coin cell battery. First, find a flat surface and place the key with the metal part facing up. You'll notice small notches or buttons along the edge. Use a thin screwdriver or a small knife to gently pry open the key casing—be careful not to apply too much force to avoid damaging the plastic. Next, remove the old battery, paying attention to the orientation (metal side facing up), and insert the new battery the same way. After closing the casing, press the buttons a few times to test if the lock/unlock functions work properly. I recommend preparing a new battery in advance; they’re available at electronics stores for just a couple of dollars. BMW key batteries typically last one to two years, and cold winter temperatures can drain them faster. Keep an eye out for unusual flashing of the key’s indicator light—replacing it early avoids the awkwardness of a dead key when you’re out. The whole process takes just five minutes, is safe, and saves money.
