How to Replace the Battery in an Older BMW X5 Key Fob?

[ErinRose]

First, press the square button on the upper right corner of the back of the BMW X5 key fob with your left hand, then pull out the mechanical key with your right hand. There is a small square on the upper right corner of the key fob that can be pressed down. Pry open the operation hole of the remote key to remove the back cover. Use tweezers to take out the old battery, then replace it with a new one of the same model. When the car key battery is running low, you may notice the following signs: 1. The effective range of the car key remote decreases. 2. The remote door locking becomes intermittent—sometimes it works, sometimes it doesn’t, and sometimes you need to press the button many times to get a response. 3. If you notice that the indicator light on the car key is significantly dimmer than usual, or if it flickers on and off, it’s time to replace the battery as soon as possible.