Don’t Get Locked Out: What to Do When Your Subaru Access Key Battery is Low

Hey there, Subaru owners! We all know that feeling of panic when our car key fobs start beeping or flashing warning signs that the battery is low – especially when it’s our beloved Subaru that we rely on every day. But don’t worry, this is a common issue and can be easily resolved. Here’s everything you need to know about what to do when your Subaru access key battery is low.

Subaru Access Key Battery Low

First things first, it’s important to understand the type of key fob your Subaru has. Most modern Subaru models come with the advanced access key, which includes the push-button start feature and the ability to unlock or lock the doors without ever taking the key fob out of your pocket or purse. However, this convenience comes with a drawback: the battery life of the advanced access key is shorter than traditional keys.

What to Do When Your Subaru Access Key Shows a Low Battery Warning

If you own a Subaru, you might have encountered a low battery warning on your access key. This warning can be concerning, as it means that your key is running out of battery. But don’t worry. In this article, we’ll explain what the warning means, how to replace the battery on your Subaru Access Key, and when to seek professional assistance.

Understanding the Low Battery Warning

When your Subaru Access Key shows a low battery warning, it means that the battery is running low and needs to be replaced soon. Typically, the warning is indicated by a flashing light on the key fob and a message on your car’s dashboard display. If you ignore this warning, you may find yourself locked out of your vehicle as the key won’t work.

The low battery warning is a safety feature intended to protect you from being stranded without a functioning key. It’s ideal to replace the battery as soon as possible, once the warning appears.

Replacing the Battery on Your Subaru Access Key

Replacing the battery on your Subaru Access Key is simple and can be done easily with a new battery. Here are the step-by-step instructions:

Step 1: Purchase a replacement battery that is compatible with your Subaru Access Key. Check your vehicle’s owner’s manual for the correct battery type.

Step 2: Locate the small indentation at the back of the key fob.

Step 3: Insert a small flat head screwdriver into the indentation. Gently pry the key fob apart until it splits open.

Step 4: Use your fingers to remove the small battery from inside the key fob.

Step 5: Insert the new battery in the same orientation as the old battery.

Step 6: Snap the key fob back together and test the new battery by pressing its buttons.

When to Seek Professional Assistance

If you are not comfortable replacing the battery on your own, or if you don’t have the right tools, it is best to seek professional assistance. You can take your Subaru Access Key to a Subaru dealership or a trusted mechanic for battery replacement.

Additionally, if you have tried replacing the battery but the warning light did not go away, there could be an issue with the key fob that requires repair or replacement. In such cases, a professional mechanic is best equipped to diagnose and fix the problem.

In conclusion, a low battery warning on your Subaru Access Key is a normal occurrence that can be resolved by replacing the battery. With the easy-to-follow instructions we have provided, you can replace the battery yourself. If you prefer, you can seek professional help to ensure your key fob is working optimally to start your car.

Common Issues with Subaru Access Key Battery

The Subaru access key is an essential component of vehicle ownership. It allows drivers to conveniently lock, unlock, and start their cars. However, when the battery of the key fob starts to lose its charge, it can cause various issues. These issues range from the key fob not functioning correctly to electronic failure.

Dying Battery

The most common problem with the Subaru access key is the battery dying. The key fob needs a steady supply of power to function correctly. When the battery starts to lose its charge, it may not work correctly, or the range may be reduced. If you notice the key fob’s range decreasing, it could be a sign that the battery is running low. Another sign to look out for is when the buttons require more effort to push than usual.

You can quickly test the battery using simple methods. One way is to hold the key fob close to your ears while pressing the buttons. If you hear a small beep, then the battery is still functional. If you don’t hear anything or hear a faint sound, then it’s time to replace the battery. Another way to test is by using a voltmeter. Insert the key fob battery into the voltmeter, and if the reading is below 3 volts, it’s time for a replacement battery.

To prolong the battery’s life, ensure you don’t store your key fob in hot temperatures, such as direct sunlight. And avoid dropping the fob as it may cause damage to the internal components. Regularly checking the battery’s condition and keeping a spare battery handy can help save you from inconvenience and unexpected situations.

Key Fob Malfunction

Another issue that can arise with the Subaru access key is the key fob not opening or closing the car doors. If the buttons are not working, the problem could be a dead battery, or the key fob has been damaged. If the battery isn’t the issue, try replacing the key fob’s battery, or it could be necessary to reprogram the key fob to the car’s system. If the door still does not unlock, the issue might be with the lock actuator or the car’s central locking system. A visit to your local Subaru dealer or mechanic may be required to identify and fix the problem.

Electronic Failure

Another issue that may occur with the Subaru access key is electronic failure. The electronic system is sensitive and can be damaged by exposure to moisture or extreme temperatures. Over time, electronic components will wear out and cause the key fob to malfunction. To avoid electronic failure, store your key fob in a cool, dry place and avoid exposing it to water or moisture. Additionally, avoid exposing it to any shocks, such as dropping it or hitting it against hard surfaces.

In summary, checking and maintaining the condition of your Subaru access key is essential for its smooth operation. Regularly testing the battery, avoiding exposure to harsh conditions, and handling the key fob with care can help prolong its life and prevent inconveniences. If you encounter any issues, follow the troubleshooting steps, and if all else fails, take it for a professional diagnosis and repair.

Happy and Safe Driving!

We hope you found this article helpful and informative. Remember, if your Subaru access key battery is low, don’t panic! There are simple steps you can take to avoid getting locked out of your vehicle. By following the tips we’ve outlined, you’ll be able to replace your battery quickly and easily.

Thank you for reading our article on what to do when your Subaru access key battery is low. We’re always here to help you stay safe and get the most out of your vehicle. Be sure to visit again soon for more tips and advice on how to keep your car running smoothly. Safe travels!


1. What causes a Subaru access key battery to become low?

The main reason for a low access key battery is simply regular wear and tear. As your vehicle ages, the battery inside the key can begin to lose power. In some cases, environmental factors such as extreme heat or cold can also impact the battery’s lifespan.

2. How do I know when my Subaru access key battery is low?

Your vehicle will usually give you an indication that the battery is low with a warning on your dashboard. Your access key itself might also show a warning light or fail to unlock your car doors properly.

3. Can I replace my Subaru access key battery myself?

Yes! Replacing your Subaru access key battery is usually a simple process that you can do at home. All you need is a replacement battery and a few basic tools.

4. What type of battery do I need for my Subaru access key?

The type of battery you need will depend on your vehicle’s make and model. Your owner’s manual should provide detailed information on the type of battery required.

5. How long will a new Subaru access key battery last?

With proper usage and care, a new access key battery should last for several years. However, its lifespan can vary depending on various factors, including frequency of use.

6. Can I use a generic battery for my Subaru access key?

While some people opt for generic or aftermarket batteries to save money, it’s always best to use the manufacturer-recommended battery for your Subaru access key. This will ensure optimal performance and protect your vehicle from damage.

7. Do I need to reprogram my key after replacing the battery?

In most cases, you won’t need to reprogram your access key after replacing the battery. However, if you do experience issues with your key not working properly, you may need to refer to your owner’s manual for additional instructions.

8. Can low access key battery cause other issues with my vehicle?

In most cases, a low access key battery won’t cause any other issues with your vehicle. However, if left unaddressed, it can eventually lead to your key fully losing power and failing to unlock your car doors.

9. How much does it cost to replace a Subaru access key battery?

The cost of replacing a Subaru access key battery varies by location and can range from a few dollars to more than $20.

10. How often should I replace my Subaru access key battery?

There’s no set timeframe for replacing your access key battery. However, it’s a good idea to replace it every few years as part of your vehicle’s regular maintenance routine.