How to Change the Battery in a BMW Key Fob

Has your BMW key fob become less responsive lately? Are you having to stand closer to your car to get it to unlock? If so, it may be time to change the battery in your BMW key fob. Thankfully, this is a quick and easy process you can do yourself at home with just a few simple tools. This article will guide you step-by-step through the process.

What You’ll Need

Before you start, gather the following items:

A new CR2032 battery: This is the most common type of battery for BMW key fobs. You can find them at most convenience stores, auto parts stores, or online.
A small flat-head screwdriver: This will be used to pry open the key fob.

How to Change the Battery

Follow these easy steps to replace the battery in your BMW key fob:

Locate the release button: Look on the back of your key fob for a small button or switch. This is the release button for the emergency key.
Remove the emergency key: Press the release button and carefully slide the emergency key out of the fob.
Separate the key fob halves: Using your fingernail or the tip of the flat-head screwdriver, carefully pry open the key fob casing where the emergency key was removed. You should hear a slight click when the halves separate.
Locate and remove the old battery: Inside the key fob, you’ll see the old CR2032 battery. Use the flat-head screwdriver to gently pry it out of its slot.
Insert the new battery: Make sure the positive (+) side of the new battery is facing up, then carefully place it into the slot.
Reassemble the key fob: Align the two halves of the key fob casing and press them together until you hear a click.
Reinsert the emergency key: Slide the emergency key back into its slot on the key fob.

That’s it! You’ve successfully changed the battery in your BMW key fob.

Testing the New Battery

After replacing the battery, test all the functions of your key fob, such as locking and unlocking the doors and starting the engine, to ensure it is working correctly.

Important Tips:

Handle the battery with care to avoid short-circuiting it.
Avoid touching the battery terminals.
Do not use excessive force when opening or closing the key fob to avoid damaging it.
If you are unsure about any step, consult your owner’s manual or seek assistance from a qualified automotive technician.

Troubleshooting

My key fob still isn’t working after replacing the battery. What should I do?

There are a few reasons why your key fob might not be working even after a battery replacement:

Incorrect battery installation: Double-check that you installed the new battery correctly, with the positive (+) side facing up.
Key fob programming required: Some BMW models require you to reprogram your key fob after a battery change. Refer to your owner’s manual or search for specific instructions online for your BMW model.
Other key fob issues: If reprogramming doesn’t work, there might be a more serious issue with your key fob, such as a malfunctioning circuit board. In this case, you might need to have it diagnosed and repaired or replaced by a qualified automotive technician.

Need Help Programming Your BMW Key Fob?

If you’re experiencing difficulties programming your BMW key fob after replacing the battery, you can find model-specific instructions on our website:

Still Have Questions?

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Have more questions about your BMW Key Fob or need further assistance? Don’t hesitate to contact our expert team through WhatsApp: +1(641)206-8880 or email us at: [email protected]. We are available 24/7 to provide you with the best support.