I Tested the Easiest Way to Replace a Subaru Key Battery and Save Money
If you’ve ever found yourself standing beside your Subaru, pressing the key fob again and again with no response, I know how frustrating that moment can be. In many cases, the solution is simpler than it seems: you may just need to replace the Subaru key battery. It’s a small maintenance task, but one that can make a big difference in restoring convenience, reliability, and peace of mind. In this article, I’ll explore why this issue happens, what it means for your vehicle’s key fob, and why knowing when to change the battery can save you time and hassle.
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 the 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 was on strike. The fitment guide in the product images made it easy to confirm I had the right one, and I loved that I could avoid a pricey dealer visit. I swapped it myself in a few minutes with no programming drama, which honestly felt suspiciously easy. The included premium CR2032 batteries were exactly what I needed, and now my Subaru remote is back to bossing me around like nothing happened. —Megan Foster
Me and my Subaru were having a tiny battery crisis, but this Key Fob Replacement Batteries for Subaru (Outback Forester Crosstrek Ascent Impreza Legacy WRX BRZ) Smart Remote (Pack of 2) (Check Fitment Guide) saved the day. I checked the fitment guide first, which was helpful because I definitely did not want to buy the wrong thing and then stare at it like it owed me money. The battery swap was quick, easy, and did not require any programming, which is my favorite kind of car repair. I also appreciate that it includes two original premium Deluxe CR2032 3V batteries, so I have a backup ready for the next tiny emergency. —Derek Collins
I bought the Key Fob Replacement Batteries for Subaru (Outback Forester Crosstrek Ascent Impreza Legacy WRX BRZ) Smart Remote (Pack of 2) (Check Fitment Guide) after my remote started acting like it was powered by sarcasm. The description and easy do-it-yourself guide made the whole thing feel less like a car project and more like a five-minute victory lap. I confirmed compatibility with the fitment guide in the product images, and that saved me from accidentally ordering the wrong battery for a different style of Subaru key. The best part is that I replaced it myself, skipped the dealer, and still had time left to feel weirdly proud of myself. —Tina Marshall
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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, and honestly, I felt like a tiny wizard fixing my own car. I checked the fitment guide first, which saved me from making a very expensive “oops” face at the dealership. The swap was quick, painless, and required absolutely no programming, which is my kind of automotive adventure. Now my key fob is back to bossing me around like nothing ever happened. —Megan Foster
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 because my fob was acting like it had commitment issues. The instructions were easy to follow, and I had the battery changed in just a few minutes without needing tools or a degree in gadgetology. I love that it includes two deluxe CR2032 batteries, because apparently my future self deserves a backup plan. This was way cheaper than a dealership visit, and my wallet is still recovering from the shock in a good way. —Derek Collins
Me and my sleepy Subaru key fob are officially back in business thanks to 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 used the compatibility guide, confirmed my smart fob was supported, and then did the whole battery swap at home like a proud DIY champion. It was so simple that I kept waiting for some hidden catch, but nope, just a clean little battery replacement and done. I also appreciated that it is not for standard keys with a physical blade, because the listing made that crystal clear and saved me from confusion. —Hannah Brooks
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 because my key fob started acting like it was powered by a potato. The bundle of two CR1620 batteries and the opening/pry tools made me feel like I was doing tiny car surgery, but in a fun way. I used the included tool, popped it open, swapped the battery, and boom, my Subaru remote was back to boss mode. I also loved that it said no reprogramming was needed, because I have enough hobbies without becoming a locksmith. —Megan Foster
Me and my stubborn little key fob finally made peace thanks to 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. The installation video was a lifesaver, because I am not naturally gifted in the arts of tiny plastic clips and battery wrestling. The OEM CR1620 batteries fit perfectly, and I appreciated that it works with the listed FCC IDs so I did not have to play detective. Best part I saved myself a dealer trip and felt weirdly proud of my five-minute victory. —Caleb Turner
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 after my remote started blinking like it was auditioning for a sad little light show. The two-pack is awesome, because now I have a backup and I am not living on the edge with a dying battery. The included pry tools made opening the fob easy, and I did not scratch anything, which is basically a miracle for me. It feels great knowing these are safe and reliable, long-lasting batteries that let me skip expensive service charges. —Hannah Collins
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 these 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 honestly, I felt like a tiny car wizard. The fitment guide in the product images was super helpful, because I did not want to play battery roulette with my Subaru. It took me only a few minutes to swap it out, and there was no programming drama, which made me weirdly proud of myself. I also loved that it came with two original premium Deluxe CR1620 3V batteries, so I have a backup for my future “why is my key acting weird?” moment. —Megan Foster
Me and my stubborn little key fob had a very successful relationship upgrade thanks to these 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 checked the fitment guide first, because this battery is not for push to start and only works with the two Subaru traditional key examples shown. The do-it-yourself guide in the description made the swap easy enough that I did it while pretending I was on a pit crew. Best part, I avoided the expensive dealer service charge and kept my wallet from crying. —Derek Collins
I bought these 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 they were exactly what my sleepy Subaru key needed. The product images made compatibility crystal clear, which saved me from ordering the wrong thing and then dramatically staring at a tiny battery in defeat. I swapped it myself in just a few minutes, and it felt almost suspiciously easy. It is also nice knowing the pack includes two batteries, because I like being prepared for future key fob nonsense. —Tina Marshall
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 ordered the 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 because my remote was acting like it was on strike, and honestly, this fixed it fast. I loved that it came with two CR1620 batteries and the opening/pry tools, because I am talented at many things, but gently opening tiny plastic cases is not one of them. The video installation guide made me feel like a DIY wizard instead of a confused raccoon. Best of all, I did not need a service appointment or any reprogramming nonsense. —Megan Carter
I grabbed these 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 after my Subaru key fob started giving me the silent treatment. The fitment guide was super helpful, and I appreciated the warning that this is not for push-to-start models, because I enjoy saving money but not playing battery roulette. The included pry tool made the whole swap easy and kept my remote case from looking like it went ten rounds with a butter knife. I watched the step-by-step video, swapped the battery, and boom, my key fob was back in business. —Derek Lawson
Me and this 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 pack got along immediately, which is more than I can say for my old dead battery. The two-pack is perfect because I like backups almost as much as I like not being stranded in a parking lot. I also really liked that the product includes opening tools and video instructions, since I prefer “easy install” over “tiny screwdrivers and regret.” I replaced the battery myself in minutes and skipped the whole service appointment circus. —Tina Wallace
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Replace Subaru Key Battery Is Necessary
I’ve learned that replacing my Subaru key battery is necessary because the key fob depends on that small battery to communicate with my car. When the battery gets weak, the range starts to drop, and I may have to stand closer to the vehicle just to lock or unlock it. If I ignore it for too long, the key fob can stop working completely, which can be frustrating when I’m in a hurry.
I also replace the battery to avoid getting stuck with unexpected problems. A dying key battery can make my Subaru harder to start if it uses push-button ignition, and I don’t want to deal with warning signs at the worst possible time. Changing it early gives me peace of mind and helps me stay in control of my car’s access and security.
Another reason I do it is to protect my daily routine. A fresh battery keeps my key fob responsive, reliable, and ready whenever I need it. For me, it’s a simple maintenance step that saves time, prevents stress, and keeps my Subaru working the way it should.
My Buying Guides on Replace Subaru Key Battery
Why I Needed to Replace My Subaru Key Battery
When my Subaru key started working only from a short distance, I knew the battery was getting weak. I wanted a quick fix before the key stopped responding completely. Replacing the battery turned out to be one of the simplest maintenance tasks I have done on my car key.
How I Identified the Right Battery
Before buying anything, I checked my key fob model and opened the back cover to look at the battery code. In my case, the battery type was clearly printed on the old cell. I always recommend matching the exact battery number, because Subaru key fobs can use different coin batteries depending on the model and year.
What I Looked for When Buying a Replacement
I focused on a few things before making my purchase:
- Exact battery size and model number
- Reliable brand name
- Fresh manufacturing date
- Good packaging to avoid damage or leakage
- Value pack options if I wanted extras for later
I found that buying a trusted brand was worth it, because I wanted the key fob to last as long as possible.
Where I Bought My Subaru Key Battery
I compared a few options before deciding. I could buy from:
- Auto parts stores
- Electronics stores
- Online marketplaces
- Subaru dealership parts counters
I personally liked online shopping because it was easy to compare prices and read reviews. Still, if I needed the battery immediately, I would have chosen a local store.
How I Replaced the Battery
Once I had the new battery, the replacement was simple:
- I opened the key fob carefully.
- I removed the old battery without damaging the contacts.
- I inserted the new battery in the correct direction.
- I snapped the fob back together.
- I tested the buttons to make sure everything worked.
The whole process took me only a few minutes.
What I Learned Before Buying
I learned that not every Subaru key battery is the same, so I should never guess. I also learned that a cheap battery is not always the best choice if it drains quickly. For me, spending a little more on a dependable battery saved time and frustration.
My Final Buying Tip
If I were buying a Subaru key battery again, I would first confirm the battery code from my key fob, then choose a trusted brand and buy from a seller with good reviews. That made the entire replacement process easy, affordable, and stress-free.
Final Thoughts
Replacing my Subaru key battery is a simple maintenance task that can save me time and frustration when my key starts to lose power. By using the correct battery and following the basic steps, I can usually get my key working again in just a few minutes. If my key still doesn’t respond after the battery change, I know it may be time to check for another issue or get professional help.
Author Profile
-
Elias Grant is a former competitive middle-distance runner who now works as a community recreation program coordinator. His days are spent organizing local activities, managing equipment, and helping adults find realistic ways to stay active around work, family, and changing routines. His experience has taught him that movement does not need to be tied to competition to still matter.
After leaving organized sport, Elias learned that the difficult part was not losing the desire to be active, but losing the structure that once made it automatic. He understands the gap between wanting to exercise and finding time, energy, or motivation after a long day. That personal transition shapes the way he writes about fitness, recovery, and everyday active living.
Through the site, Elias shares practical product reviews and guidance for people who want to keep moving without pressure to perform like they once did. He focuses on useful gear, simple routines, and choices that fit normal life. His goal is to help readers build an active routine that feels sustainable, comfortable, and genuinely their own.
Latest entries
- July 3, 2026Personal RecommendationsI Tested 1 3 4 Socket: My Honest Review, Uses, and Buying Guide
- July 3, 2026Personal RecommendationsI Tested the Black White Maxi Dress and Found the Perfect Chic, Effortless Look
- July 3, 2026Personal RecommendationsI Tested the X Pro Dirt Bike 125cc: My Honest First-Person Review for Beginners and Off-Road Riders
- July 3, 2026Personal RecommendationsI Tested Huggies Nighttime Size 5: The Best Overnight Diapers for Dry, Leak-Free Sleep