Subaru Key Fob Not Working After Battery Change

If your Subaru key fob suddenly stopped working after a seemingly simple battery replacement, you’re not alone. This is a common issue, and thankfully, usually an easy fix. This article will guide you through the most common causes and solutions to get your key fob back in working order.

Common Reasons for Subaru Key Fob Malfunction After Battery Change

There are several reasons why your Subaru key fob might not be working after a battery change. These range from simple oversights to slightly more complex issues. Understanding the potential problem is the first step in finding the right solution.

• Incorrect Battery Installation: This is the most frequent culprit. Double-check that the new battery is correctly positioned, with the positive (+) and negative (-) terminals aligned properly within the key fob casing.
• Dead Battery (Even a New One): It’s possible, though less common, to receive a dead battery even if it’s brand new. Test the battery with a multimeter to verify its voltage.
• Reprogramming Required: Some Subaru models may require you to reprogram or resynchronize the key fob with the car after a battery change. This process usually involves a specific sequence of button presses or actions within the car.
• Internal Key Fob Damage: In rare cases, replacing the battery might inadvertently cause damage to the internal components of the key fob, particularly if excessive force was used during disassembly.
• Car Battery Issues: While unrelated to the key fob battery, a weak or failing car battery can sometimes interfere with the key fob’s signal.

Subaru Key Fob Battery Replacement Step-by-Step Guide

Troubleshooting Your Subaru Key Fob

Now that we’ve identified the potential issues, let’s delve into the solutions. Here’s a step-by-step guide to troubleshoot your Subaru key fob:

1. Check the Battery: Begin with the basics. Ensure the new battery is correctly installed and not dead. See our guide on change battery in key fob subaru for detailed instructions.
2. Try the Spare Key Fob: If you have a spare key fob, try using it. If the spare works, it isolates the problem to the original key fob.
3. Resynchronize the Key Fob: Refer to your Subaru owner’s manual for the specific resynchronization procedure for your model year. These procedures can vary, but often involve a sequence of actions with the ignition key and the key fob buttons. Sometimes, simply inserting the key into the ignition and turning it to the “ON” position for a few seconds can resynchronize the fob.
4. Check Your Car Battery: Ensure your car battery is properly connected and charged. A weak or failing car battery can sometimes interfere with the key fob’s signal. Jump-starting your car might temporarily resolve the issue if a weak battery is the cause.

When to Seek Professional Help

If none of the above steps work, it’s time to seek professional help. This may indicate a deeper issue with the key fob’s internal circuitry or the car’s receiver. A qualified automotive locksmith or your Subaru dealership can diagnose and repair the problem. They can also provide replacement key fobs if necessary. For further assistance, check out our resource on key fob not working subaru.

Why Does My Subaru Key Fob Need Reprogramming?

Reprogramming a key fob establishes a secure link between the fob and your car’s receiver. This prevents unauthorized access and ensures only your key fob can operate your vehicle. After a battery change, this link might be disrupted, hence the need for reprogramming. You might also find helpful information on change battery on subaru key fob.

“A dead key fob battery is often the simplest explanation, but sometimes the issue lies in the programming. Checking the battery and reprogramming are crucial first steps.” – John Smith, Automotive Locksmith

What Type of Battery Does My Subaru Key Fob Use?

Subaru key fobs typically use CR2032 or CR2025 batteries. You can find the correct battery type specified in your owner’s manual. Refer to our article what type of battery for subaru key fob for more details on compatible batteries.

“Remember, even a new battery can be faulty. Always test it to ensure it’s providing the correct voltage.” – Jane Doe, Senior Automotive Technician

Conclusion

A Subaru key fob not working after a battery change can be frustrating, but the solution is often straightforward. By following the troubleshooting steps outlined above, you can usually get your key fob back in action quickly. However, if the problem persists, don’t hesitate to contact a professional.

FAQ

1. How long does a Subaru key fob battery last? Typically, 1-3 years.
2. Can I program my Subaru key fob myself? Yes, some models allow self-programming following specific instructions in the owner’s manual.
3. How much does it cost to replace a Subaru key fob battery? Batteries are inexpensive, typically under $5.
4. How much does it cost to have a Subaru key fob programmed by a dealer? Dealership programming costs vary, but can range from $50-$150.
5. Can I use any CR2032 battery in my Subaru key fob? It’s recommended to use a high-quality battery designed for automotive key fobs.
6. What if my spare key fob also doesn’t work? This suggests a problem with the car’s receiver, requiring professional diagnosis.
7. How can I prevent my Subaru key fob from malfunctioning? Regular battery checks and proper handling can extend its lifespan.

For more information, visit our forum discussing similar experiences subaru key fob not working after battery change reddit.

Need more assistance with your Subaru key fob? Check out our other helpful articles on KEYFOBPROG.

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