Is your Subaru key fob starting to feel a little unresponsive? You might be facing the common issue of a dying battery. Before you rush to the dealership, you should know that replacing the battery in your Subaru key fob is a simple task you can easily do yourself. This guide will walk you through the process step-by-step, saving you time and money.
What You’ll Need to Change Your Key Fob Battery
Before you begin, gather these simple tools:
- A new CR2032 battery: This is the standard battery type for most Subaru key fobs. You can find these at most drugstores, supermarkets, and online retailers.
- A small flathead screwdriver or pry tool: A small eyeglass screwdriver or a plastic pry tool will work perfectly to open the key fob case without causing damage.
- A soft cloth (optional): This can be used to protect the key fob casing from scratches while you’re working.
Step-by-Step Guide to Changing Your Subaru Key Fob Battery
Follow these easy steps to replace the battery in your Subaru key fob:
Step 1: Locate the Battery Compartment
Examine your Subaru key fob. You’ll typically find a small seam or groove running along the edge of the fob. This indicates where the two halves of the case join together and where you need to open it to access the battery.
Step 2: Open the Key Fob
Using your flathead screwdriver or pry tool, gently insert the tip into the seam or groove. Apply a small amount of pressure and twist or pry carefully to separate the two halves of the key fob casing. Avoid using excessive force to prevent damage to the plastic. In some Subaru models, you might find a small release button that you need to press before you can pry open the case. Refer to your owner’s manual if you are unsure.
Step 3: Remove the Old Battery
Once the key fob is open, you’ll see the old CR2032 battery. Take note of the battery’s orientation – usually, the positive (+) side is facing upwards. Gently pry the old battery out of its housing. You can use your fingertip or the small screwdriver to carefully lift it out.
Step 4: Install the New Battery
Take your new CR2032 battery and install it in the same orientation as the old one, with the positive (+) side facing upwards. Push it gently into place until it is secure in the battery compartment.
Step 5: Close the Key Fob
Carefully align the two halves of the key fob casing and press them firmly back together until they snap securely closed. Ensure that there are no gaps and that the case is properly sealed.
Step 6: Test Your Key Fob
Test your key fob by pressing the lock, unlock, and panic buttons to ensure they are functioning correctly. If the buttons are responsive, you’ve successfully changed the battery in your Subaru key fob!
Understanding Key Fob Battery Life and Maintenance
While changing the battery is straightforward, understanding why key fob batteries die can help you prolong their lifespan. It’s not just air exposure that drains these batteries, but rather factors like humidity and temperature fluctuations.
As discussed in battery research, humidity and temperature changes can accelerate the self-discharge rate of CR2032 batteries, the type commonly found in key fobs. The drastic temperature swings and humidity levels that car key fobs often experience – from freezing winters to hot summers – can contribute to a quicker battery drain.
Although some batteries are packaged in double-sealed packs for a longer shelf life, the packaging for many standard CR2032 batteries, like those pictured, are not hermetically sealed. This is often more for child safety reasons due to regulations, rather than strictly for preventing air exposure from affecting the battery’s lifespan.
By understanding these factors, you can take simple steps to potentially extend your key fob battery life, such as avoiding leaving your key fob in direct sunlight or extreme temperatures for extended periods.
Conclusion
Changing your Subaru key fob battery is a quick and easy DIY task that can save you a trip to the mechanic or dealership. By following these simple steps and understanding the factors that affect battery life, you can keep your key fob working reliably for years to come. If you encounter any difficulties or are uncomfortable performing this task yourself, always consult your Subaru dealer or a qualified automotive technician.
