6 Easy Steps: How to Replace Volkswagen Key Battery

Featured Image: Image of a Volkswagen key with the battery compartment open

Losing your car keys can be a stressful experience, especially if you’re far from home. But even if you have a spare key, it’s important to know how to replace the battery in your Volkswagen key. A dead battery can prevent you from unlocking your car, starting the engine, or using the remote keyless entry system.

Replacing the battery in a Volkswagen key is a quick and easy process that can be done in just a few minutes. Here’s a step-by-step guide on how to do it:

First, you’ll need to gather the necessary tools. You’ll need a small flathead screwdriver or a key with a flat edge, a new CR2032 battery, and a clean cloth. Once you have your tools, you can begin the process of replacing the battery. Start by inserting the screwdriver or key into the small notch on the back of the key. Gently pry the key open, being careful not to damage the plastic casing. Once the key is open, you’ll see the old battery. Use the cloth to remove the old battery and insert the new one, positive side up. Finally, snap the key back together and you’re done!

Identifying the Battery Location

Locating the battery in your Volkswagen key can be a straightforward process, but knowing where to look is essential. Here’s a detailed guide to help you identify the battery’s location:

Flip Open the Key:

Start by flipping open the key by pressing the small button on the side, revealing the metal key blade and the plastic housing.

Locate the Battery Compartment Release:

Look for a small, round button or a button with a battery symbol on the key’s plastic housing. This button is the battery compartment release.

Press the Release Button:

Press the battery compartment release button. This will unlatch the compartment, allowing you to slide it open and access the battery.

Identify the Battery Type:

Once the compartment is open, you’ll see the battery nestled inside. Note the size and shape of the battery to determine the correct replacement battery type. Common battery types for Volkswagen keys include CR2032, CR2025, and CR2016.

Battery Type	Location
CR2032	MK6/Jetta/Golf/Tiguan/Eos
CR2025	Passat/CC/Touareg
CR2016	Older models

With the battery type identified, you can proceed with the replacement process to restore your Volkswagen key’s functionality.

Removing the Key Case

To access the battery, you’ll need to remove the key case. Here’s a step-by-step guide:

**Locate the release button.** It’s usually located on the side or back of the key. Press it and gently pull the case apart.

**Identify the battery type.** Most Volkswagen keys use a common CR2032 battery. It’s a round, silver battery with a diameter of 20mm and a thickness of 3.2mm.

**Remove the old battery.** Gently pry the battery out of its slot using a small screwdriver or your fingernail.

**Insert the new battery.** Make sure to align the positive (+) and negative (-) terminals correctly.

**Reassemble the key case.** Snap the two halves of the key case back together. Make sure it fits snugly and securely.

**Test the key.** Insert the key into the ignition and try to start the vehicle. If the car starts successfully, you’ve replaced the battery correctly.

Battery Compatibility Table

Volkswagen Model	Battery Type
Golf	CR2032
Jetta	CR2032
Passat	CR2032
Tiguan	CR2032
Atlas	CR2032

Extracting the Battery

1. Locate the Battery Lock. It is a small, round button on the back of the key fob. Use a pointed object, such as a toothpick or a small screwdriver, to press the button and release the battery cover.

2. Remove the Battery Cover. Carefully pry open the battery cover using a small flat-head screwdriver or your fingernail. The cover should come off easily.

3. Extract the Old Battery. The battery is a small, round button battery. Use a pair of tweezers to gently lift the battery out of the key fob. Be careful not to damage the battery or the key fob.

Make	Model	Key Fob Type	Battery Type
Volkswagen	Jetta	Flip-style	CR2032
Volkswagen	Passat	Push-button	CR2025

4. Dispose of the Old Battery Safely. Button batteries can be hazardous if they are not disposed of properly. Please refer to your local regulations for proper battery disposal.

Selecting the Replacement Battery

To replace the battery in your Volkswagen key, it is essential to select the right replacement. This ensures the key functions correctly and the new battery lasts as long as possible. Here’s a detailed guide to help you choose the appropriate replacement battery:

Checking the Original Battery

Examine the current battery in your key to determine its type and specifications. Note the battery’s size, shape, and voltage. Usually, the battery voltage is printed on the battery itself.

Consulting the Owner’s Manual

Refer to your Volkswagen owner’s manual to confirm the specific battery type recommended for your key. The manual will provide detailed information about the type and specifications of the battery, ensuring compatibility with your vehicle’s electronic systems.

Checking Online Resources

Search the internet for the battery specification of your Volkswagen key model. Websites like Amazon, eBay, and other automotive parts retailers provide detailed information about different batteries. Additionally, you can search for forums or online groups dedicated to Volkswagen owners, where you can connect with other users and seek recommendations.

Matching the Specifications

Ensure that the replacement battery matches the specifications of the original battery. The battery should be of the same size, shape, and voltage. Mixing different battery types or using a battery with incorrect specifications can damage the key or affect its functionality.

Battery Type	Voltage	Size
CR2032	3.0 Volts	20mm diameter, 3.2mm thickness
CR2025	3.0 Volts	20mm diameter, 2.5mm thickness
CR1632	3.0 Volts	16mm diameter, 3.2mm thickness

Inserting the New Battery

To insert the new battery, follow these steps:

Gently slide the battery holder open.
Remove the old battery, taking note of its orientation.
Insert the new battery into the holder in the same direction as the old battery.
Secure the battery holder.
Double-check that the key fob is functioning correctly by pressing any of the buttons. If the buttons do not respond, recheck the battery’s orientation and make sure the battery holder is securely closed.

Battery Type	Battery Voltage
CR2032	3 Volts

Note that the battery type and voltage may vary slightly depending on the specific Volkswagen model and key fob type.

Reassembling the Key Case

With the battery replaced, it’s time to put the key case back together. Start by aligning the two halves of the case and gently pressing them together. Make sure the buttons are properly aligned before pressing firmly to snap the case closed.

Check the buttons to ensure they are working correctly. If they don’t, re-open the case and inspect the battery installation. If everything looks correct, the key should be ready to use.

Inserting the Key Blade

If your key has a key blade, it should be inserted into the case at this point. Line up the blade with the designated slot in the case and gently push it in until it clicks into place.

Make sure the blade is fully inserted and firmly secured. A loose key blade could cause problems when using the key.

Reattaching the Key Ring

The final step is to reattach the key ring. Locate the designated hole or loop on the key case and insert the key ring. Securely tighten the ring to prevent the key from accidentally falling off.

Your Volkswagen key is now fully reassembled with a new battery. Test it to ensure it works properly before putting it back into your pocket or wallet.

Troubleshooting

If you experience any issues with the key after replacing the battery, here are a few troubleshooting tips:

Problem	Solution
The key doesn’t work	Check the battery installation and make sure the battery is inserted correctly. If the battery is installed correctly, try a new battery.
The buttons don’t work	Re-open the case and check the battery installation and the button contacts. If everything looks correct, try a new battery.
The key blade is loose	Re-insert the key blade and make sure it is pushed in all the way until it clicks into place.

If you continue to have problems, it may be necessary to consult a professional locksmith or an authorized Volkswagen dealer.

Testing the New Battery

Once you have replaced the battery in your Volkswagen key, it’s important to test it to make sure it’s working properly. Here’s how to do it:

Press the lock button on the key. The LED light should illuminate.
Press the unlock button on the key. The LED light should illuminate.
Try locking and unlocking your car with the key. It should work smoothly.
If the key doesn’t work properly, try replacing the battery with a new one.
If the key still doesn’t work, there may be a problem with the key itself or with the car’s ignition system. In this case, it’s best to consult a qualified mechanic.

Here’s a table of possible problems and solutions:

Problem	Solution
LED light doesn’t illuminate when I press the buttons	Replace the battery
Key doesn’t work properly	Replace the key
Car’s ignition system doesn’t respond	Consult a mechanic

Replacing the Key in the Vehicle

There could be situations where you will need to replace the physical key with another one in the vehicle. Here is how you can replace it:

Locate the key slot and insert the physical key.
Turn the key to the “on” position.
Wait for the “key not found” warning message to appear on the dashboard.
Within 10 seconds, remove the old key and insert the new key.
Turn the key to the “on” position again.
The “key found” message will appear on the dashboard.
Wait for the immobilizer warning light to turn off.
The new key is now programmed and ready to use.

Step 1: Gather Your Materials

You will need a new battery, a screwdriver, and the key you need to replace the battery in.

Step 2: Locate the Battery

The battery is usually located inside the key fob. You may need to use a screwdriver to open the fob.

Step 3: Remove the Old Battery

Use a screwdriver to carefully pry the old battery out of the fob.

Step 4: Insert the New Battery

Insert the new battery into the fob, making sure to align the positive and negative terminals correctly.

Step 5: Close the Fob

Close the fob and tighten the screw.

Step 6: Test the Key

Press a button on the key to test if it is working properly.

Step 7: Programming the New Key (if required)

If the new key does not work, you may need to program it to your car. Consult your car’s owner’s manual for instructions on how to do this.

Programming the New Key (if required)

If your Volkswagen key has a chip, you will need to program the new key to your car. Here are the steps on how to do this:

1. Insert the new key into the ignition and turn it to the “ON” position.
2. Press and hold the lock button on the new key for 10 seconds.
3. Release the lock button and press the unlock button for 5 seconds.
4. Remove the new key from the ignition and test it to make sure it works.

Troubleshooting Battery-Related Issues

1. Why is my Volkswagen key battery not working?

The most common reason for a Volkswagen key battery not working is that it is dead. Other possible causes include a faulty key fob, a problem with the car’s ignition switch, or a problem with the immobilizer system.

2. How do I know if my Volkswagen key battery is dead?

There are a few signs that your Volkswagen key battery may be dead. One sign is that the key fob will not unlock the car doors. Another sign is that the key fob will not start the car. You may also see a warning light on the dashboard that indicates that the key battery is low.

3. How do I replace the battery in my Volkswagen key?

Replacing the battery in a Volkswagen key is a simple process. You will need a new CR2032 battery and a small screwdriver. Follow these steps to replace the battery:

Locate the small screw on the back of the key fob.
Use the screwdriver to remove the screw.
Open the key fob and remove the old battery.
Insert the new battery into the key fob, positive side up.
Close the key fob and tighten the screw.

4. How long will a Volkswagen key battery last?

A Volkswagen key battery typically lasts for about two years. However, the battery may last longer or shorter depending on how often you use the key fob.

5. Can I use any type of battery in my Volkswagen key?

No, you cannot use any type of battery in your Volkswagen key. The key requires a specific type of battery, which is a CR2032 battery.

6. Where can I buy a replacement Volkswagen key battery?

You can buy a replacement Volkswagen key battery at most auto parts stores or online.

7. How do I troubleshoot other key battery-related issues?

If you are having other key battery-related issues, such as the key fob not unlocking the car doors or not starting the car, you may need to troubleshoot the problem. Here are a few things you can try:

Check the key battery. Make sure that the battery is new and that it is correctly installed.
Check the key fob. Make sure that the key fob is not damaged and that the buttons are working properly.
Check the car’s ignition switch. Make sure that the ignition switch is not damaged and that it is making good contact with the key.
Check the immobilizer system. Make sure that the immobilizer system is not malfunctioning.

10. If I have tried all of the above and my key still does not work, what should I do?

If you have tried all of the above and your key still does not work, you may need to take your car to a dealer or locksmith to have it diagnosed and repaired.

How to Replace Volkswagen Key Battery

Replacing the battery in your Volkswagen key is a simple process that can be done in just a few minutes. Here are the steps on how to do it:

Locate the small screw on the back of the key and remove it using a small Phillips head screwdriver.

Once the screw is removed, gently pry open the back of the key using a flathead screwdriver or your fingernail.

Inside the key, you will see the battery. It is usually a small, round battery with a positive (+) and negative (-) terminal.

Use a small screwdriver or your fingernail to gently remove the battery from its holder.

Take the new battery and place it in the holder, making sure that the positive (+) terminal is facing the same way as the old battery.

Gently snap the back of the key back into place and replace the screw.

Now that you have replaced the battery, your Volkswagen key should be working again. If it is still not working, there may be another issue with the key or your car’s ignition system.