Replacing the Battery in a 2018 Subaru Key Fob

2018 Subaru Key Fob Not Working

If your 2018 Subaru key fob has stopped working, you’re not alone. This is a common issue that many Subaru owners face. The good news is that it can often be fixed with a few simple troubleshooting steps. This comprehensive guide will walk you through the most common reasons your 2018 Subaru key fob is not working and how to get it working again.

Common Reasons Why Your 2018 Subaru Key Fob is Not Working

There are several reasons why your 2018 Subaru key fob might not be working. Here are some of the most common culprits:

  • Dead Battery: This is the most common reason for a malfunctioning key fob. Key fob batteries typically last between 3-5 years, depending on usage.
  • Key Fob Needs Reprogramming: Over time, your key fob can lose its programming, especially after a jump start or if the car battery has been disconnected.
  • Faulty Key Fob: Like any electronic device, your key fob can simply wear out or become damaged.
  • Receiver Issues: In rare cases, the problem may not be with the key fob itself but with the car’s receiver.

How to Fix a 2018 Subaru Key Fob Not Working

Here’s a step-by-step guide to help you troubleshoot and fix your key fob issue:

1. Check and Replace the Battery

  • Most 2018 Subaru key fobs use a CR2032 battery. You can easily find these at most convenience stores and online retailers.
  • Open the key fob carefully using a coin or a small flathead screwdriver.
  • Remove the old battery and replace it with a new one, ensuring the positive (+) side faces up.
  • Test the key fob to see if it works.

Replacing the Battery in a 2018 Subaru Key FobReplacing the Battery in a 2018 Subaru Key Fob

2. Reprogram the Key Fob

If replacing the battery doesn’t solve the issue, you might need to reprogram the key fob. You can sometimes find the reprogramming instructions in your Subaru owner’s manual.

Here’s a general method that may work for some 2018 Subaru models:

  1. Get inside your Subaru and close all doors.
  2. Insert the key into the ignition and turn it to the “ON” position (don’t start the engine).
  3. Within 15 seconds, open and close the driver’s side door six times.
  4. Remove the key from the ignition.
  5. Press the “Lock” button on the key fob once.
  6. Test if the key fob is working.

Note: If these steps don’t work, your specific model may have a different reprogramming procedure. Consult your owner’s manual or a Subaru dealership for assistance.

3. Contact a Locksmith or Dealership

If you’ve tried replacing the battery and reprogramming the key fob without success, there might be a more complex issue. It’s best to contact a qualified automotive locksmith or your Subaru dealership for further diagnosis and repair.

Tips to Avoid Subaru Key Fob Issues in the Future

  • Regularly Check and Replace the Battery: Don’t wait for your key fob battery to completely die before replacing it. Consider replacing it every few years as preventative maintenance.
  • Protect Your Key Fob: Avoid exposing your key fob to extreme temperatures, moisture, or physical damage. A protective case can help extend its lifespan.
  • Keep Your Key Fob Away from Electronic Interference: Electronic devices like laptops, tablets, and cell phones can sometimes interfere with key fob signals.
  • Have a Spare Key Fob: It’s always a good idea to have a spare key fob programmed and ready to use in case of emergencies.

Frequently Asked Questions

Q: How much does it cost to replace a Subaru key fob battery?

A: A CR2032 battery typically costs just a few dollars.

Q: Can I reprogram my Subaru key fob myself?

A: Yes, it’s often possible to reprogram the key fob yourself by following the instructions in your owner’s manual or searching for your specific model online.

Q: How long do Subaru key fob batteries last?

A: Subaru key fob batteries usually last between 3-5 years, depending on usage and environmental factors.

Q: What do I do if my Subaru key fob gets wet?

A: If your key fob gets wet, remove the battery immediately and let all parts dry thoroughly before reassembling and testing.

Q: Can a locksmith make a new Subaru key fob?

A: Yes, most qualified automotive locksmiths can cut and program new Subaru key fobs.

Need help with your Subaru key fob? Learn more about Subaru Forester key fob modifications. If you’re experiencing issues with your 2018 Subaru key fob, don’t hesitate to contact us. We offer expert Key Fob Programming and replacement services to get you back on the road quickly. Call us 24/7 for assistance or visit our shop conveniently located in Amarillo, Texas. We are committed to providing exceptional customer service and reliable solutions for all your Subaru key fob needs.


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  1. […] replacement can save you time and money. If you’ve recently changed the battery and your 2018 subaru key fob not working, reprogramming might be […]

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