How to change battery in vw car key

Are you experiencing problems with your VW car key? Does it not unlock or lock your car remotely? If so, the issue might be with the battery. Over time, the battery inside your car key can wear out and lose its charge. Fortunately, replacing the battery is a quick and easy process that can be done at home with a few simple tools.

In this article, we will guide you through the process of changing the battery in your VW car key. We will cover everything from identifying the correct battery to use, opening the key, and replacing the battery. By following our step-by-step instructions, you can save time and money by avoiding a trip to the dealership or mechanic. So, let’s get started!

How to Change Battery in VW Car Key

Step 1: Open Key Fob

Locate the small button on your VW car key and press it to release the key blade. Insert the blade into the notch on the side of the key fob and twist it gently to pry the two halves apart.

Step 2: Remove Battery

Once the key fob is open, locate the battery compartment. Use a small flathead screwdriver to gently pry the battery out of its compartment. Take note of the positioning of the battery to ensure the new battery is inserted correctly.

Step 3: Insert New Battery

Insert the new battery into the compartment, making sure that it’s facing the right direction. Push the battery down until it clicks into place.

Step 4: Reassemble Key Fob

Carefully line up the two halves of the key fob and press them together until they snap back into place. Make sure the key blade is securely seated in its slot before pressing the release button to retract it.

Step 5: Test the Key

Press the buttons on your key fob to make sure the battery replacement was successful. If the buttons are still not responding, try replacing the battery again or take it to a professional for assistance.

With these simple steps, you can successfully change the battery in your VW car key and ensure that it continues to function properly.

Checking the Key Model

1. Look for the Model Number

The first step in changing the battery of your VW car key is to determine the model number of the key. This is important because different key models have different ways of accessing the battery compartment.

Look for the model number on the back of the key. It is usually imprinted on the plastic casing or engraved on a metal plate. If you can’t find the model number, check the user manual or contact the dealership for assistance.

2. Compare with Online Resources

Once you have the model number, search for online resources that provide information on how to change the battery for that specific key model. Many Volkswagen owners have documented their experiences in forums or blogs, so it’s worth checking those as well.

Compare the instructions you find with the physical appearance of your key to ensure that you have the correct model.

Note: If you are not confident in changing the battery yourself, it’s recommended to bring the key to a professional locksmith or VW dealership to prevent damage to the key.

Opening the Key Case

Step 1

Locate the small button on the side of the key case and press it. This will release the key blade.

Step 2

Insert the key blade into the slot on the bottom of the key case and twist it. This will separate the two halves of the case.

Step 3

Remove the battery cover from the back of the case by gently prying it open with a small flathead screwdriver or your fingernail.

Step 4

Take out the old battery and replace it with a new one. Make sure the new battery is inserted with the plus sign (+) facing up.

Step 5

Put the battery cover back on the case and snap the two halves of the case together. Insert the key blade back into the key case until it clicks into place.

Note: If your key fob has a transponder chip, be careful not to damage it while changing the battery. If the chip is damaged, your key may no longer work and you may need to have it replaced by a professional.

Replacing the Battery

Step 1: Open the Key Fob

To replace the battery in your VW car key, you first need to open the key fob. You can do this by locating the small indentation on the edge of the fob and using a small, flat object to gently pry it open.

Step 2: Remove the Old Battery

Once the key fob is open, carefully remove the old battery and set it aside. Take note of which side of the battery is facing up, as you will need to insert the new battery in the same orientation.

Step 3: Insert the New Battery

With the old battery removed, it’s time to insert the new one. Make sure you have the correct replacement battery for your key fob model, as batteries can vary. Insert the new battery with the same side facing up as the old battery.

Step 4: Close the Key Fob

After the new battery is inserted, carefully close the key fob back up. Make sure it snaps securely into place to ensure the battery stays in contact with the terminals.

Step 5: Test the Key Fob

To ensure the new battery is working properly, test the key fob by using it to lock and unlock your VW car. If the fob is still not functioning properly, you may need to seek the advice of a professional or the dealership.

Testing the Key

Step 1: Check the LED light

When you press any button on the key fob, the LED light should light up. This indicates that the battery is functioning and that the key fob is sending a signal to the car. If the LED light does not light up, it’s likely that the battery needs to be replaced.

• If the LED light does not turn on, try replacing the battery.
• If the LED light still does not turn on, the key fob may be damaged and will need to be replaced.

Step 2: Test the buttons

Press each button on the key fob to ensure that it is working correctly. If any of the buttons are not functioning, it may be a sign that the battery needs to be replaced.

• If the buttons are not working, try replacing the battery.
• If the buttons still do not work, the key fob may be damaged and will need to be replaced.

Step 3: Test the range

Stand near your car and press the lock and unlock buttons to test the range of the key fob. If the car does not respond to the key fob, it may be a sign that the battery needs to be replaced.

• If the range is reduced, try replacing the battery.
• If the range is still reduced, the key fob may be damaged and will need to be replaced.