How to Change Porsche Key Battery

Changing the battery in your Porsche key may seem like a daunting task, but it’s a simple process that only takes a few minutes. Over time, key fob batteries can weaken, leading to reduced range or difficulty unlocking your vehicle.

How to Change Porsche Key Battery

In this blog post we will show you how to change porsche key battery so that it functions properly. Read on to learn more about which components and tools are needed for the job as well as detailed instructions on completing the task!

Signs That Indicate the Key Fob Battery Needs Replacement

There are several indicators that suggest your Porsche key fob battery may need to be replaced. One common sign is a decrease in the remote’s range—when you need to be closer to your vehicle for the key fob to work effectively.

Another sign is inconsistent functionality, such as delayed or unresponsive locking and unlocking of your car doors. Additionally, you might notice a warning message on your car’s dashboard or instrument cluster alerting you about a low key battery. If any of these symptoms occur, it’s a clear sign that it’s time to replace the battery to ensure your key fob functions as intended.

Identifying Your Porsche Key Fob Type

Before replacing the battery, it’s important to determine the type of key fob your Porsche uses. Porsche key fobs may vary depending on the model and year of your vehicle. Most commonly, Porsche vehicles utilize either the traditional key fob or the advanced Keyless Entry & Drive system.

The traditional key fob features buttons for locking, unlocking, and trunk access, while the Keyless Entry & Drive system allows for a keyless start and entry. Check your vehicle’s manual or visually inspect your key fob to identify its type. Proper identification ensures you select the correct battery for replacement and handle the device appropriately.

Tools and Materials Needed

To successfully replace the battery in your Porsche key fob, you will need the following tools and materials:

  • Replacement Battery: Most Porsche key fobs use a CR2032 or CR2025 lithium coin battery. Refer to your vehicle’s manual to confirm the correct type. 
  • Small Screwdriver: A flathead precision screwdriver works best for carefully prying open the key fob casing. 
  • Soft Cloth or Towel: To prevent scratching or damaging surfaces while working on the key fob. 
  • Gloves (Optional): Wearing gloves can help avoid transferring oils or dirt onto the battery or components. 

Ensure you have all the necessary items before starting the replacement process for a smooth and efficient experience.

10 Methods How to Change Porsche Key Battery

1. Identify the Type of Key Fob You Have

Identify the Type of
Key Fob You Have

Before starting the process, it’s important to first identify the exact model of your Porsche key fob. Porsche uses different key fob designs across various models, such as the traditional Porsche remote or the newer smart keys.

Understanding which model you have will help determine the specific steps and battery type required. Most Porsche key fobs use a CR2032 or CR2025 lithium battery, but it’s always best to check the owner’s manual or inspect the current battery for accurate information.

2. Gather Necessary Tools

Before you begin replacing the key fob battery, gather the necessary tools. In most cases, you’ll need a small flathead screwdriver or a plastic pry tool to safely open the key fob without damaging it.

Additionally, make sure you have the correct replacement battery, which is often a CR2032 or CR2025, depending on the fob. It’s also advisable to have a clean cloth or surface to work on to avoid any dirt or debris from entering the fob during the process.

3. Remove the Mechanical Key from the Key Fob

Most Porsche key fobs include a mechanical key that can be removed from the key fob. This key can be used in case of emergencies when the battery is dead. To remove the mechanical key, locate the release button on the fob.

Press the button, and the mechanical key should slide out easily. Set the key aside in a safe place to prevent losing it during the battery replacement process.

4. Open the Key Fob Case

Once the mechanical key is removed, use your small flathead screwdriver or plastic pry tool to carefully open the two halves of the key fob. Be gentle during this step to avoid damaging the case.

Insert the tool into the seam of the fob and gently twist or pry it apart. You may need to apply light pressure to pop the two halves apart, but be cautious not to force it too much, as the fob is often made of delicate materials.

Open the
Key Fob Case

5. Remove the Old Battery

After the key fob case is open, locate the battery inside the fob. Most Porsche key fobs will have a lithium coin cell battery, typically either a CR2032 or CR2025. Take note of the orientation of the battery, as the new battery will need to be installed in the same position.

Use your fingers or a non-metallic tool to carefully remove the old battery from its compartment. Be cautious not to damage the battery contacts inside the key fob during this step.

6. Clean the Battery Compartment

Before inserting the new battery, take a moment to inspect and clean the battery compartment. Use a soft cloth or a cotton swab to wipe away any dirt, debris, or corrosion from the contacts. This step is crucial as dirt or corrosion can interfere with the battery’s connection and may cause your key fob to malfunction. Be careful not to use anything abrasive that could scratch or damage the interior of the key fob.

7. Insert the New Battery

Take the new CR2032 or CR2025 battery and place it into the battery compartment of the key fob. Make sure the battery is oriented correctly, with the positive side (+) facing up.

The battery should fit snugly in the compartment, and there should be no wobbling or movement once it’s in place. Gently press down on the battery to ensure it makes a good connection with the contacts inside the fob.

8. Reassemble the Key Fob

Once the new battery is in place, it’s time to reassemble the key fob. Carefully align the two halves of the key fob and press them together until they snap back into place.

Make sure that both halves are securely closed and that no gaps are visible. If necessary, use a small amount of pressure to ensure that the fob is tightly sealed. Avoid pressing too hard, as this could cause damage to the case or the internal components.

9. Test the Key Fob

After the key fob is reassembled, test the functionality of the fob to ensure the battery replacement was successful. Stand near your Porsche vehicle and press the lock or unlock button on the fob. You should hear a click or see the lights flash to confirm that the fob is communicating with the vehicle.

Test the
Key Fob

If your Porsche has a push-to-start system, press the fob against the start button to check that it is working correctly. If the key fob does not function, ensure the battery is properly inserted, and the key fob is fully assembled.

10. Dispose of the Old Battery Properly

Finally, once the new battery is installed and the key fob is functioning correctly, dispose of the old battery properly. Lithium batteries should never be thrown in the trash as they can be hazardous to the environment.

Many auto parts stores, electronic retailers, and even some recycling centers offer battery recycling programs, so be sure to drop off the old battery at an appropriate location.

Maintenance and Upkeep

To ensure your key fob stays in optimal working condition, regular maintenance is essential. Start by keeping the exterior of the key fob clean using a soft, damp cloth to remove dirt and debris. Avoid exposing the key fob to extreme temperatures, as this can affect the battery life and internal components.

Additionally, periodically check the key fob’s buttons for wear and tear, as frequent use can cause them to degrade over time. If you notice any signs of damage, consider replacing the outer casing or buttons to maintain functionality. By taking these simple upkeep measures, you can extend the lifespan of your key fob and minimize the chances of unexpected malfunctions.

Maintenance
And Upkeep

Conclusion

Changing the battery in your Porsche key fob is a straightforward process that can be completed at home with minimal tools and effort. By following these ten steps, you can ensure your key fob continues to function properly, allowing you to enjoy the convenience of keyless entry and push-to-start technology.

If you encounter any difficulties or are unsure about any step, it’s always a good idea to consult your Porsche owner’s manual or seek assistance from a professional. So, there you have it – a quick and easy guide on how to change porsche key battery.

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