Replace a Battery in a BMW Key Fob

How to Replace a Battery in a BMW Key Fob

Facing a dead BMW key fob battery can stop you in your tracks. But, there’s no need to worry. You can replace the battery in your BMW remote quickly and get back to driving your car without hassle. This process is simple, and designed for anyone to tackle. Whether you’re a seasoned DIY enthusiast or new to car maintenance, this task is manageable.

Key fob battery replacement is essential for uninterrupted access and use of your BMW. By learning how to replace the key fob battery yourself, you save time and possibly money. This page shows how to change the battery across various BMW key fobs. 

From the comfort of your garage or driveway, follow these steps to ensure your BMW key fob functions flawlessly. Let’s dive into how you can replace the battery and keep your BMW remote ready for every journey.

Identifying Your BMW Key Fob Type

First, identify your BMW key fob type. Each model, whether it’s the 1 series, 2 series, 5 series, 7 series, X1, X3, X5, or X6, may have a different key fob. This step is crucial as it determines the battery type needed and the replacement process.

Tools and Materials Needed

You will need a new battery, which could be a CR2032 or a CR2450, and a screwdriver. Sometimes, you might also use the valet key to open the key fob.

Step-by-Step Battery Replacement for Smart Key

  • Locate a new CR2450 battery.
  • Remove the metal key blade from the key fob.
  • Take off the back cover.
  • Carefully remove the old battery.
  • Insert the new one securely.

Step-by-Step Battery Replacement for Comfort Access Key

  • Find a new CR2032 battery.
  • Press the small tab on the key fob to access the valet key.
  • Use the valet key or a flathead screwdriver to open the key fob.
  • Replace the old battery with the new CR2032 battery.
  • Ensure the key fob is securely closed.

Handling Non-Comfort Access Key Battery Replacement

For non-comfort access keys, the process differs. These keys have rechargeable batteries that charge automatically when in the engine. If your key won’t open, it might be because it’s a non-comfort access type. You can’t simply change or charge the battery yourself in this case.

It’s recommended to contact our service department for assistance. Our trained technicians can open the key fob for you, ensuring the battery is correctly replaced without damaging the fob.

Replacing Battery in Sleek Slant Shaped Key

The sleek slant-shaped key, often found in newer BMW models, requires a CR2032 battery. First, push the button to release the valet key. Then, use it to open the battery compartment. Replace the old battery with the new one, ensuring it fits snugly and securely.

It’s crucial to follow the correct direction when inserting the new battery to prevent damage. After replacement, make sure the key fob is closed tightly.

Special Considerations for Diamond Key Fob

The diamond key fob is a bit tricky. Its battery is not meant to be user-replaceable. However, if you’re curious and handy with tools, it’s possible to replace them. This involves cutting the fob open and soldering in a new battery, a task best left to professionals.

We don’t recommend attempting this without proper knowledge and tools. Contact our service centre for help. Our experts have the right tools and experience to handle this delicate procedure.

Contact Us for Help

If you encounter any difficulties or have questions about replacing your BMW key fob battery, don’t hesitate to contact us. Schedule a service with our dealership for professional assistance. Our parts department is always ready to provide the exact battery model you need, and our team is eager to offer support and advice.

Numan Mushtaq