How to replace the battery in a BMW X1 key?
2 Answers
Before replacing, it's best to first understand the battery model of your car key and choose a new key battery according to the specified model. Remove the hidden mechanical key from the remote by pressing the switch to take out the mechanical key. Use the extracted mechanical key to insert into the groove, then use a lever motion to lift the key casing. Once the key casing is opened, you can see the battery positioned quite deep. Use any tool to slide along the side gaps and gently pry out the old battery. After installing the new battery, ensure the positive and negative poles are correctly placed. Snap the back cover back on to complete the battery replacement.
I've driven BMWs for over a decade and am very familiar with replacing key fob batteries. The BMW X1 typically uses a flip-style remote key with a seam at the back - gently pry it open with a small screwdriver to reveal the battery compartment. It takes a CR2032 coin cell battery, so make sure to check the specification when purchasing a new one. When removing the old battery, avoid using excessive force to prevent damaging the contacts. Install the new battery with the positive side facing up - it won't work if inserted backwards. After replacement, snap the casing shut firmly and test the unlock button to confirm operation. Regular replacement prevents travel inconveniences; changing it every two years is usually sufficient. These key fob batteries cost just a few dollars at electronics stores, so there's no need to overspend.
