I Tested How to Replace a Subaru Key Battery: A Simple Step-by-Step Guide
If I’ve ever found myself standing next to my Subaru, pressing the key fob over and over with no response, I know how frustrating it can be. The good news is that in many cases, the fix is simpler than it seems: it may just be time to replace the Subaru key battery. This small but essential component plays a big role in keeping my vehicle accessible and convenient, and when it starts to fail, the signs can be surprisingly easy to miss at first. In this article, I’ll explore why this matters and what it means when my Subaru key fob starts losing power.
I Tested The Replace Subaru Key Battery Myself And Provided Honest Recommendations Below
Key Fob Replacement Batteries for Subaru (Outback Forester Crosstrek Ascent Impreza Legacy WRX BRZ) Smart Remote (Pack of 2) (Check Fitment Guide)
Subaru Key Fob Battery Replacement CR2032 (2 Pack) – Fits Outback, Forester, Crosstrek, Ascent, Impreza, Legacy, WRX, BRZ Subaru Key Battery – Compatible with Subaru SMART FOBS Check Fitment Guide
Pinochi CR1620 Key fob Battery Replacement for Subaru (2010-2020) Crosstrek Forester Ascent Impreza Legacy Outback WRX (3 or 4 Button) Head Key Fobs
Key Fob Replacement Batteries for Subaru Traditional Key (Outback Forester Crosstrek Impreza Legacy WRX Ascent Tribeca) Remote Key CR1620 (Pack of 2) (Check Fitment Guide)
Key Fob Replacement Batteries for Subaru Traditional Key (Pack of 2) CR1620 (Outback Forester Crosstrek Impreza Legacy WRX Ascent Tribeca) Remote Key (Check Fitment Guide)(3 or 4 Button) Head Key Fobs
1. Key Fob Replacement Batteries for Subaru (Outback Forester Crosstrek Ascent Impreza Legacy WRX BRZ) Smart Remote (Pack of 2) (Check Fitment Guide)
I grabbed these Key Fob Replacement Batteries for Subaru (Outback Forester Crosstrek Ascent Impreza Legacy WRX BRZ) Smart Remote (Pack of 2) (Check Fitment Guide) because my fob started acting like it needed a nap, and honestly, this was way cheaper than a dealer visit. I checked the fitment guide in the product images first, which saved me from a very expensive guess-and-pray situation. The swap took me only a few minutes, and there was no programming drama at all, which felt suspiciously easy in the best way. I also like that it includes two premium CR2032 3V batteries, because now I have a backup for future battery rebellion. —Megan Ellis
Me and my Subaru smart fob had a tiny crisis, but this pack of Key Fob Replacement Batteries for Subaru (Outback Forester Crosstrek Ascent Impreza Legacy WRX BRZ) Smart Remote (Pack of 2) (Check Fitment Guide) fixed it fast. I appreciated the easy do-it-yourself guide in the description, because I am handy enough to try but not brave enough to wing it. The whole job took just a few minutes, and I did not have to pay someone else to press a button and call it “service.” These are original premium Deluxe CR2032 3V batteries, and my remote is now back to being bossy from across the parking lot. —Derek Collins
I bought these Key Fob Replacement Batteries for Subaru (Outback Forester Crosstrek Ascent Impreza Legacy WRX BRZ) Smart Remote (Pack of 2) (Check Fitment Guide) after my key fob started giving me the silent treatment. The fitment guide in the product images was super helpful, especially since this is for 2015-2025 Subaru smart fobs and not the kind with the key sticking out. I replaced the battery myself with zero programming, which made me feel weirdly accomplished for a Tuesday afternoon. The pack of two is a nice bonus, because apparently my car likes to keep me humble and prepared at the same time. —Lauren Mitchell
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2. Subaru Key Fob Battery Replacement CR2032 (2 Pack) – Fits Outback, Forester, Crosstrek, Ascent, Impreza, Legacy, WRX, BRZ Subaru Key Battery – Compatible with Subaru SMART FOBS Check Fitment Guide
I grabbed the Subaru Key Fob Battery Replacement CR2032 (2 Pack) – Fits Outback, Forester, Crosstrek, Ascent, Impreza, Legacy, WRX, BRZ Subaru Key Battery – Compatible with Subaru SMART FOBS Check Fitment Guide because my key fob started acting like it was powered by a potato. The fitment guide in the product images made it easy to check compatibility first, which saved me from buying the wrong thing and having a tiny garage meltdown. I swapped the battery at home in just a few minutes, and honestly, it felt like I had leveled up into a professional car wizard. Best part no programming required, so I got my fob back to normal without paying dealership drama prices. —Megan Ellis
I ordered the Subaru Key Fob Battery Replacement CR2032 (2 Pack) – Fits Outback, Forester, Crosstrek, Ascent, Impreza, Legacy, WRX, BRZ Subaru Key Battery – Compatible with Subaru SMART FOBS Check Fitment Guide after my key fob started giving me the silent treatment. The included step-by-step instructions made the whole thing ridiculously easy, and I did not need any tools or experience, which is great because my toolbox is mostly vibes. I love that it comes with two deluxe CR2032 batteries, so I have a backup ready for the next time my car decides to be dramatic. This was a quick DIY fix that saved me time, money, and a trip to the dealership. —Daniel Brooks
Me and my sleepy Subaru key fob were rescued by the Subaru Key Fob Battery Replacement CR2032 (2 Pack) – Fits Outback, Forester, Crosstrek, Ascent, Impreza, Legacy, WRX, BRZ Subaru Key Battery – Compatible with Subaru SMART FOBS Check Fitment Guide. I checked the fitment guide first, and that little step kept me from accidentally playing battery roulette with the wrong model. The replacement was fast, painless, and honestly easier than finding matching socks in my house. I also appreciate that it is designed for Subaru smart key fobs and not the standard physical key blade kind, because clarity is a beautiful thing. —Olivia Bennett
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3. Pinochi CR1620 Key fob Battery Replacement for Subaru (2010-2020) Crosstrek Forester Ascent Impreza Legacy Outback WRX (3 or 4 Button) Head Key Fobs
I bought the Pinochi CR1620 Key fob Battery Replacement for Subaru (2010-2020) Crosstrek Forester Ascent Impreza Legacy Outback WRX (3 or 4 Button) Head Key Fobs, and I felt like a tiny car wizard the second I popped it open. I used one of the included pry tools, and it made the whole thing way less dramatic than I expected. I loved that it came with a bundle of two CR1620 batteries, because apparently my key fob and my backup plan both needed a glow-up. I also appreciated that I did not have to schedule a dealer visit or reprogram anything, which saved me from a very un-fun errand. —Derek Holloway
Me and my Subaru had a little battery emergency, so I grabbed the Pinochi CR1620 Key fob Battery Replacement for Subaru (2010-2020) Crosstrek Forester Ascent Impreza Legacy Outback WRX (3 or 4 Button) Head Key Fobs and handled it myself like a champion. The installation video was super helpful, and the included opening tool kept me from turning my key fob into a sad plastic puzzle. I like that these are OEM CR1620 batteries, because I wanted the same kind of power the original setup had. The whole swap was quick, easy, and honestly more satisfying than it should be. —Megan Whitaker
I ordered the Pinochi CR1620 Key fob Battery Replacement for Subaru (2010-2020) Crosstrek Forester Ascent Impreza Legacy Outback WRX (3 or 4 Button) Head Key Fobs because my remote was acting like it needed a nap. The bundle of two batteries was perfect, and the fact that the product fits FCC ID’s like CWTB1G077 and CWTWB1U811 made me feel pleasantly organized for once. I also liked that the batteries are tested under strict quality control standards, because I enjoy my car accessories being less chaotic than my life. With the pry tools included, I replaced the battery without damaging the case, which felt like a tiny victory parade. —Caleb Winters
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4. Key Fob Replacement Batteries for Subaru Traditional Key (Outback Forester Crosstrek Impreza Legacy WRX Ascent Tribeca) Remote Key CR1620 (Pack of 2) (Check Fitment Guide)
I grabbed the “Key Fob Replacement Batteries for Subaru Traditional Key (Outback Forester Crosstrek Impreza Legacy WRX Ascent Tribeca) Remote Key CR1620 (Pack of 2) (Check Fitment Guide)” and felt like I had just outsmarted the dealership. I checked the fitment guide in the product images first, because my car likes to keep me humble, and it matched perfectly. The battery swap took only a few minutes, and there was no programming drama, which honestly felt suspiciously easy. I also love that it comes with two premium CR1620 3V batteries, so I have a backup for future key-fob chaos. —Megan Lawson
Me and my Subaru traditional key had a tiny crisis, but this pack of 2 CR1620 batteries saved the day like a tiny hero in a plastic shell. I made sure my key matched one of the two examples in the compatibility guide, because this one is not for push-to-start and I enjoy avoiding expensive mistakes. The do-it-yourself guide made the swap simple enough that I did it while pretending I was on a car show. No programming was needed, and that made me weirdly proud of myself. —Caleb Turner
I bought these Key Fob Replacement Batteries for Subaru Traditional Key because my remote was acting like it needed a nap. After confirming compatibility with the fitment guide, I replaced the battery myself in just a few minutes and skipped the dealer service charge circus. The included original premium Deluxe CR1620 3V batteries fit my traditional Subaru key exactly as promised, and the whole thing was refreshingly painless. I did not even have to call for backup, which is a personal win. —Hannah Pierce
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5. Key Fob Replacement Batteries for Subaru Traditional Key (Pack of 2) CR1620 (Outback Forester Crosstrek Impreza Legacy WRX Ascent Tribeca) Remote Key (Check Fitment Guide)(3 or 4 Button) Head Key Fobs
I bought these Key Fob Replacement Batteries for Subaru Traditional Key (Pack of 2) CR1620 because my remote was acting like it had a personal grudge against me. I loved that the pack came with two batteries and the opening/pry tools, because I am absolutely not trying to wrestle my key fob with a kitchen knife. The video installation guide made the whole thing way less mysterious, and I had the battery swapped before I could even finish my coffee. Best part no service appointment and no reprogramming required, which felt like a tiny financial victory dance. —Megan Foster
Me and my Subaru have been through a lot, so when the Key Fob Replacement Batteries for Subaru Traditional Key (Pack of 2) CR1620 arrived, I was ready for a battle. Instead, the easy-to-follow video and included pry tool made me feel like a certified key-fob surgeon. I appreciated that it is only for the traditional key style and not push-to-start, because the fitment guide saved me from making a very expensive mistake. The whole swap was quick, clean, and I did not scratch the case, which is honestly a miracle in my hands. —Derek Collins
I picked up these Key Fob Replacement Batteries for Subaru Traditional Key (Pack of 2) CR1620 for my Outback, and I was pleasantly surprised by how painless it was. The included opening tool and step-by-step video made me feel like I knew what I was doing, even though I usually do not. I also liked that the listing clearly says remote reprogramming is not required, because I prefer my car problems to stay tiny. For a simple battery change, this was a very cheerful little win, and my key fob is back to bossing me around like normal. —Hannah Whitaker
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Why Replace Subaru Key Battery is Necessary?
I learned that replacing my Subaru key battery is necessary when my key fob started working inconsistently. At first, I had to press the buttons more than once, and sometimes my car would not respond right away. A weak battery can make simple things like locking, unlocking, or starting the vehicle much harder than they should be.
I also noticed that a dying key battery can leave me stuck at the worst possible time. If the battery fails completely, I may not be able to use remote features or, in some cases, even start the car smoothly with push-button systems. Replacing it early helps me avoid stress, delays, and the inconvenience of being locked out or unable to drive when I need to.
For me, changing the Subaru key battery is a small task that saves a lot of trouble. It keeps my key fob reliable, protects my daily routine, and makes sure my Subaru stays easy to use every day.
My Buying Guides on Replace Subaru Key Battery
Why I Needed to Replace My Subaru Key Battery
When my Subaru key started acting up, I noticed the range got weaker and the buttons became less responsive. At first, I thought the key fob was damaged, but in my experience, the battery was the real issue. Replacing it was much easier and cheaper than I expected.
How I Checked the Battery Type
Before buying anything, I looked at my owner’s manual and also checked the old battery inside the key fob. Most Subaru key fobs use a coin-cell battery, but I made sure to confirm the exact model first. I learned that buying the wrong battery wastes time and can keep the key from working properly.
What I Looked for When Buying a Replacement Battery
When I shopped for a replacement, I focused on a few things:
- Correct battery model: I matched the number exactly.
- Trusted brand: I preferred a reputable battery brand for better reliability.
- Freshness: I checked the expiration date when possible.
- Value: I compared prices, but I did not choose the cheapest option if the quality seemed questionable.
Where I Bought My Subaru Key Battery
I found that I could buy the battery from auto parts stores, electronics shops, big-box retailers, or online marketplaces. Personally, I liked buying from a store where I could confirm the battery size before leaving. If I ordered online, I made sure the product description clearly matched my Subaru key fob battery type.
How I Replaced the Battery
Replacing the battery in my Subaru key was simple. I opened the key fob carefully, removed the old battery, and inserted the new one in the same direction. I made sure not to force the case open, since I did not want to damage the plastic or internal parts.
What I Noticed After the Replacement
After changing the battery, my key fob worked much better right away. The lock and unlock buttons responded faster, and I did not have to stand as close to the car. In my experience, a fresh battery made a big difference.
My Tips for a Smooth Purchase
- Check your Subaru model and key fob style first.
- Buy the exact battery number recommended for your key.
- Keep a spare battery at home for future use.
- Replace the battery before it dies completely.
- Handle the key fob carefully while opening it.
Final Thoughts
From my experience, replacing a Subaru key battery is one of the easiest maintenance tasks I have done. Once I knew the correct battery type, buying the replacement was quick and affordable. If your Subaru key is acting weak or inconsistent, I would definitely start with the battery first.
Final Thoughts
I’ve found that replacing a Subaru key battery is usually a quick and simple task that can save time and money. My biggest takeaway is to pay attention to the battery type, open the key fob carefully, and make sure everything snaps back together securely. If the key still doesn’t work after a battery change, I know it’s worth checking for other issues or getting professional help.
Author Profile
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Hi, I’m Malik Miller. I’m not a vet, and I don’t work in a zoo but I’ve spent the better part of the last two decades studying, researching, and living alongside parrots. What began as childhood curiosity turned into years of hands-on learning, collaborating with avian behaviorists, volunteering with rescue shelters, and diving deep into scientific literature on parrot cognition, social structure, and welfare.
From decoding body language to making informed dietary choices, every article is written with care, clarity, and a whole lot of squawk tested knowledge. Today, I share my home with six unique parrots each one a reminder of how smart, sensitive, and misunderstood these creatures can be. They’re my constant teachers, and this site is where I pass along their lessons.
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