Trevor Ng
The Volkswagen Golf MK7 is a popular car model, and like all vehicles with keyless entry, its key fob batteries will eventually need replacing. The MK7's key fob uses a CR2025 battery, which can be purchased online or from a dealer. While the batteries are not expensive, some owners have reported that they need replacing more often than expected—sometimes as frequently as every 8-10 months.
| Characteristics | Values |
|---|---|
| Battery type | CR2025 |
| Manufacturer | Panasonic |
| Price | £3 for 10 |
| Battery life | 8-14 months |
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What You'll Learn
MK7 key fob battery replacement
The battery type for the MK7 key fob varies depending on the car model and year. For example, the 2015–2021 Volkswagen Golf MK7 uses a Panasonic CR2025 battery.
If you are unsure about which battery type to use, it is recommended to consult your dealer's parts department. They can provide you with the correct battery and even fit it for you.
The process of replacing the battery in your MK7 key fob is straightforward and can be done in just a few minutes. Here's a step-by-step guide:
- Purchase a replacement battery: Before you begin, make sure you have the correct replacement battery for your MK7 key fob. As mentioned, the battery type may vary depending on your car model and year. You can refer to your car's manual or consult a Volkswagen dealer to ensure you get the right battery.
- Remove the old battery: Gently pry open the key fob using a small flat-head screwdriver or a similar tool. Be careful not to damage the casing or the internal components. Once the fob is open, you will see the battery inside.
- Install the new battery: Remove the old battery and insert the new one, making sure it is positioned correctly. Pay attention to the positive and negative terminals to ensure the battery is inserted with the correct polarity.
- Reassemble the key fob: Carefully snap the two halves of the key fob back together. Make sure that it is securely closed before using it again.
- Test the key fob: Once the new battery is installed, test the key fob to ensure it is working properly. Lock and unlock your car doors or start the engine to verify that the key fob is functioning as expected.
It is recommended to replace the batteries in your MK7 key fob every 12 to 14 months, or as needed, to ensure optimal performance. Additionally, if you have a keyless start system, it is a good idea to carry a spare key fob with you, as the constant communication between the keys and the car can drain the batteries more quickly.
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MK7 key battery life
The MK7 key fob is notorious for its poor battery life, with some users reporting that they have to replace the battery every 3-4 weeks. The typical battery life for KESSY keys is about 2 years, but several factors can cause the battery to drain faster. These include keyless entry, the frequency of use, and the proximity of the key to the car when not in use. For example, if you park in a garage, it is recommended to always lock your car so the fob isn't constantly hunting for a signal. Additionally, the illumination of the fob's light every time you get in and out of the car, or open doors, can contribute to faster battery drainage.
To improve the battery life of your MK7 key, consider using a higher-quality battery than the OEM one, such as the 2032 battery, which is a tighter fit but offers longer life. You can also try storing your key in a metal container when at home to reduce the constant communication between the key and the car, which will help extend the battery life and provide added security against theft attempts using a repeater antenna.
When replacing the battery, make sure to pay attention to the orientation of the key. With the buttons on the key facing forward, the door may not unlock manually. Facing rearward, the door should unlock, and you can use the "Emergency start" procedure to gain entry.
The MK7.5 key uses either a CR2016 or CR2025 battery, while the Panasonic CR2025 battery is compatible with the MK7 Golf 2015-2021 model.
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MK7 key battery options
If you're looking to replace the battery in your Volkswagen Golf MK7 key fob, there are a few options available. Some people have recommended purchasing a 2-pack of Panasonic CR2025 batteries on eBay, which can be found for a reasonable price. These batteries have also been recommended by users on forums and Reddit.
Another option is to purchase a 10-pack of batteries on Amazon for around £3. While these may not be as well-known as some of the bigger battery brands, they have been recommended by other MK7 owners as good quality.
If you're unsure about replacing the battery yourself, you can always take your key fob to a Volkswagen dealer's parts department, where they will be able to replace the battery for you. Some people have reported that this service was provided free of charge.
It's worth noting that the battery life of MK7 key fobs can vary. Some people have reported that their batteries last for 12-14 months, while others have had to replace their batteries more frequently, every 8-10 months. If you have a keyless start system, the battery life may be shorter as the car is constantly pinging the remote to detect whether the key is inside the car or not.
Finally, it's important not to force a bigger battery into your key fob, as this could cause damage. If you're unsure about which battery to purchase, it's always best to consult a professional or seek advice from other MK7 owners.
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MK7 key battery cost
The Volkswagen Golf MK7 key fob requires a CR2025 battery. These batteries can be purchased online, with some people recommending Amazon, where you can get a pack of 10 for around £3.00.
If you would prefer to get your MK7 key battery from a dealership, you can expect to pay a fee for diagnosis, which one user reported to be $129. The cost of a new key and programming will be additional, which the same user estimated to be several hundred dollars.
Some VW Golf owners have reported that their local dealer's parts department was able to provide a new fob battery and fit it for them. This may be a more cost-effective option than purchasing a new key fob and having it programmed.
It is worth noting that some VW Golf owners have also mentioned that their local locksmith was unable to help with late-model VW keys, so this may not be a viable option for a key replacement.
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MK7 key battery issues
The Volkswagen Golf MK7 is a sleek and modern car with keyless entry and start technology. While this feature offers convenience, some users have reported issues with the key fob battery life. Several factors can contribute to MK7 key battery drain, and understanding these factors can help optimise battery lifespan and prevent frequent replacements.
One factor affecting MK7 key battery life is usage patterns. The more frequently the key is used to lock, unlock, or start the car, the faster the battery will drain. Additionally, if the MK7 key is left near the car, a constant connection between the car and the key fob may be established, further draining the battery. Environmental conditions and battery quality can also impact battery life, with some users reporting that higher-quality batteries last longer.
To prolong the MK7 key battery life, it is recommended to keep the key fob away from the car when not in use, especially when parking in a garage. This simple step can help reduce the frequency of battery replacements. When replacing the battery, some users suggest opting for a slightly better battery than the OEM one, such as the 2032 battery, which offers a tighter fit and potentially longer life.
MK7 key fobs typically use CR2025 batteries, which can be purchased from various retailers, including Amazon and eBay. Some users have recommended purchasing battery packs, which can provide a more cost-effective solution. When replacing the battery, it is important to pay attention to the orientation of the key to ensure proper functioning. With the buttons on the key facing forward, the door may not unlock manually. However, when facing rearward, the door can be unlocked, and the "Emergency start" procedure can be utilised if needed.
In summary, while the MK7 key fob offers the convenience of keyless entry and start, optimising battery life is crucial to prevent frequent replacements. By understanding the factors affecting battery drain and following simple tips, such as keeping the key fob away from the car when not in use, MK7 owners can prolong battery life and enjoy a more seamless driving experience.
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Frequently asked questions
The Golf MK7 key fob uses a CR2025 battery.
You can buy batteries for your Golf MK7 key from Amazon, eBay, or your local dealer's parts department.
The batteries are inexpensive, costing around $1.72 each or £3 for a pack of 10.
The battery life varies, but on average, they last between 8-14 months.
You can ask your local dealer's parts department to fit the new battery, or you can replace it yourself.
