How To Open Bmw Key Fob

How To Open BMW Key Fob

The BMW key fob is an essential accessory for any BMW owner. It not only provides a convenient and hands-free way to lock and unlock your car but also allows you to start the engine without having to insert a physical key.

Over time, however, the BMW key fob may start to malfunction or lose its functionality, which can be frustrating. In such a case, you may want to open the key fob and replace the battery, repair or replace a damaged circuit board, or simply clean the key fob for better performance.

In this article, we will guide you through the steps to open a BMW key fob and provide helpful tips for troubleshooting and maintenance. So, let’s get started.

Step-by-Step Guide to Open a BMW Key Fob

Before we begin, it’s important to note that different BMW models may have slight variations in the way the key fob is opened. Therefore, we recommend checking the owner’s manual or consulting with a BMW specialist for specific instructions for your car model.

That being said, here are the general steps to open a BMW key fob:

Step 1: Remove the Physical Key

Most BMW key fobs have a physical key hidden inside the fob’s housing. To access the key, locate the button or slider on the backside of the key fob and slide it or press it to release the key. Then, insert the key into the keyhole and turn it to unlock the key fob.

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Step 2: Separate the Key Fob Housing

Once you have the physical key out, you can separate the key fob housing to access the internal components. To do so, locate the seam where the two halves of the key fob meet and gently pry them apart using a flathead screwdriver or a plastic pry tool.

Be careful not to damage the edges or the internal circuit board while prying the housing apart.

Step 3: Remove the Battery and Circuit Board

Once you have opened the key fob, you will see the battery and the circuit board. To replace the battery, remove the old battery using a small flathead screwdriver or your fingernail, and insert the new one in its place.

If you need to replace or repair the circuit board, carefully remove it from the key fob housing, making sure not to damage any of the connectors or components.

Step 4: Reassemble the Key Fob Housing

After you have replaced the battery or repaired the internal components, it’s time to reassemble the key fob housing. Align the two halves of the key fob housing, and press them firmly together until you hear a snap or a click.

Make sure there are no gaps or misaligned parts, as this may affect the key fob’s functionality.

FAQs (Frequently Asked Questions)

Q: Do I need any special tools to open a BMW key fob?

A: No, you don’t need any special or sophisticated tools to open a BMW key fob. A flathead screwdriver, a plastic pry tool, or your fingernail should suffice.

Q: Can I replace the battery myself?

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A: Yes, you can replace the battery yourself. The battery type and size may vary depending on your BMW model. Refer to the owner’s manual or consult with a BMW specialist to determine the correct battery type and size for your key fob.

Q: Why is my BMW key fob not working?

A: There could be several reasons why your BMW key fob is not working. It could be due to a dead battery, a damaged circuit board, a faulty keyless entry system, or a malfunctioning key fob itself. We recommend troubleshooting the issue by replacing the battery or consulting with a BMW specialist if the problem persists.

Q: Can I clean my BMW key fob?

A: Yes, you can clean your BMW key fob for better performance and longevity. Use a soft cloth or a toothbrush to remove any dirt, dust, or grime from the key fob and its components. Avoid using water, soap, or harsh chemicals, as these may damage the internal circuitry or the housing.

Q: Do I need to reprogram my BMW key fob after replacing the battery?

A: In most cases, you don’t need to reprogram your BMW key fob after replacing the battery. However, if your key fob is not functioning properly after the battery replacement, you may need to reprogram it using the BMW software or through a BMW dealer.


In conclusion, opening a BMW key fob is a simple and straightforward process that can save you time and money in the long run. By following the steps outlined in this article and consulting with a BMW specialist if necessary, you can troubleshoot and maintain your key fob for optimal performance and longevity.

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Remember to be gentle and cautious while opening the key fob and handling its components, as the internal circuitry is delicate and easily damaged. With proper care and maintenance, your BMW key fob will provide you with years of convenient and reliable operation.

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