Audi S3 Key Fob Battery Replacement (2008 – 2010)

Introduction

Replacing the battery in your Audi S3 key fob is a straightforward process. You don’t need any special skills or tools, just a little bit of patience. This guide will walk you through each step to ensure you can do it easily at home.

Tools and Materials Needed

Before you begin, make sure you have the following items:

• Flathead screwdriver
• CR2032 coin battery
• Small precision screwdriver
• Optional: Paper clip

The CR2032 batteries are inexpensive and readily available online. You can find them on Amazon using the link provided in the description.

Step 1: Accessing the Battery Compartment

Start by flipping over your key fob. You’ll notice a metal key ring part at the bottom. Inside this area, there’s a small indentation or lip under the plastic.

Insert your flathead screwdriver under this plastic lip and gently pry back. The back section of the plastic will come right off, giving you access to the battery compartment.

Step 2: Removing the Old Battery

Now that you have the back cover off, you need to remove the old battery. The battery is nestled in a small opening. A flathead screwdriver might be too large to fit into this opening.

If your screwdriver is too big, you can use a paper clip or any small tool that fits. In this guide, we’ll use a small precision screwdriver.

Insert the small precision screwdriver under the battery and gently pry it up and out. Be careful not to damage any surrounding components.

Installing the New Battery

Take your new CR2032 battery. Ensure the positive side is facing up. Slide and click the battery into place so it sits flat in the compartment.

Double-check to make sure it’s properly seated. A poorly seated battery might not function correctly.

Step 3: Reassembling the Key Fob

Once the new battery is in place, all you need to do is reattach the back cover. Align it with the key fob and press it back into place until it clicks.

To ensure everything is working correctly, press one of the buttons on the key fob. If the light comes on, you’ve done everything correctly.

Conclusion

And that’s it! Replacing the battery in your Audi S3 key fob is a simple task that can save you time and money. No need to visit a dealer or a specialist.

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FAQ

How often should I replace the battery in my key fob?

Generally, key fob batteries last between 1-2 years. If your key fob starts to lose range or stops working, it’s time to replace the battery.

Can I use a different type of battery?

No, it’s important to use a CR2032 battery. Other batteries might not fit or could damage your key fob.

What if my key fob still doesn’t work after replacing the battery?

Double-check that the battery is properly seated and the positive side is facing up. If it still doesn’t work, the key fob might have other issues that need professional attention.

Is it necessary to use a precision screwdriver?

Not necessarily. Any small tool that can fit into the battery compartment will work, such as a paper clip.

Can I damage my key fob while replacing the battery?

If you’re careful, the risk of damage is minimal. Avoid using excessive force and be gentle when prying the battery out.

How can I tell if the battery is inserted correctly?

The positive side should face up. After inserting, press a button to see if the light comes on. If it does, the battery is correctly installed.

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

No, replacing the battery doesn’t affect the programming of your key fob. It should work as usual after the new battery is installed.

Where can I buy a CR2032 battery?

CR2032 batteries are widely available online and in stores. Amazon is a convenient option where you can find them at a good price.