how to fix the key fob not working on BMW X5 F15 (2014-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is in a safe location and the engine is off.

2. Replace Key Fob Battery

1. Open the key fob:
   • Use a small flathead screwdriver to pry open the key fob casing.
   • Be cautious not to damage the casing.
2. Remove the old battery:
   • Take out the old battery (typically a CR2450 or CR2032, depending on the fob).
3. Install the new battery:
   • Insert the new battery, ensuring the correct polarity (+/-) is observed.
4. Reassemble the key fob:
   • Snap the fob casing back together securely.

3. Reprogram the Key Fob

1. Enter the vehicle:
   • Sit in the driver’s seat with the new battery installed fob.
2. Turn the ignition:
   • Insert the key fob into the ignition slot (if applicable) or press the start button to turn on the electrical systems without starting the engine.
3. Press the unlock button:
   • Press and hold the unlock button on the key fob while turning the ignition to position 2 (do not start the engine).
4. Wait for confirmation:
   • Release the button once you hear a beep or see the lights flash, indicating successful programming.
5. Test the key fob:
   • Attempt to lock/unlock the doors and start the vehicle.