how to change battery in vw car key？

A Volkswagen (VW) car key not functioning properly can be a cause of frustration, often due to a dead battery. Knowing how to replace the battery in your VW key can save you both time and money. This guide will walk you through the process of changing the battery in your VW car key, ensuring you’re back on the road without any key-related issues.

Introduction

The battery in your VW key fob powers essential functions such as locking, unlocking, and, in some models, starting the vehicle remotely. When the battery starts to fail, these functions may become unreliable. This guide is tailored for VW car owners who need a simple and straightforward method to replace their key fob battery. We will explain the types of VW key fobs, the tools needed, and the step-by-step process to change the battery.

Terms Explanation

Key Fob Types

• Remote Key Fob: This is the common VW key fob with buttons used for remote locking/unlocking.

• Smart Key (KESSY): This keyless entry system allows the car to be started without inserting the key.

Battery Types

• CR2032: A common button cell battery used in many remote key fobs, including VW models.

• CR2025: Another button cell battery often found in certain VW key fobs.

Task Step Guide

Step 1: Determine Your VW Key Fob Type

Identify whether you have a standard remote key fob or a KESSY smart key. This will help you understand the exact procedure and the type of battery required.

Step 2: Gather Necessary Tools

You don’t need many tools to change the battery, but having these items will make the task easier:

• A small flathead screwdriver or plastic prying tool.

• The correct replacement battery (usually a CR2032 or CR2025).

Step 3: Open the Key Fob

Each type of VW key fob has a slightly different method for opening:

For Standard Remote Key Fob

1. Flip Out the Key Blade: Press the button to release the key blade.

2. Locate the Seam: Find the seam where the key fob halves join.

3. Pry Open the Key Fob: Insert a small flathead screwdriver or prying tool into the seam where the key blade folds out. Gently twist the tool to open the key fob.

For KESSY Smart Key

1. Remove the Emergency Key: Press the small button on the key fob to release the emergency key.

2. Pry Open the Key Fob: Use the emergency key or a small flathead screwdriver to gently pry open the back cover.

Step 4: Remove the Old Battery

• Once the key fob is open, locate the old battery. Note how it is positioned within the compartment.

• Use the flat end of the screwdriver or your fingernail to gently lift and remove the old battery from its slot.

Step 5: Insert the New Battery

• Take the new battery (ensuring it is the correct type) and position it correctly following the same orientation as the old battery.

• Ensure the battery’s positive side (+) is facing the correct direction as indicated within the key fob compartment.

Step 6: Reassemble the Key Fob

• Carefully align the two halves of the key fob and press them together until they snap securely into place. For the KESSY key, snap the back cover into place.

• For the standard remote key fob, fold back the key blade.

Step 7: Test the Key Fob

• Stand near your VW, and test the buttons on the key fob to ensure they work correctly. This includes locking, unlocking, and any other functions like the trunk release.

Tips and Reminders

• Use the Correct Battery Type: Double-check the battery model (CR2032 or CR2025) to avoid any issues.

• Handle with Care: Be gentle when prying open the key fob to avoid damaging the components.

• Dispose of Old Battery Properly: Recycle the old battery according to local regulations.

Conclusion

Changing the battery in your VW car key is a simple task that can enhance the functionality of your vehicle’s remote features without the need for a professional. By following the step-by-step guide detailed above, you can easily and confidently replace the battery in your VW key fob. Ensure you have the right tools and type of battery, handle the components carefully, and test the key after reassembly to confirm success. This practical skill will not only save you time but also provide the satisfaction of a job well done.