How to Open Your 2012 Subaru WRX STI Key Fob and Change Battery

How to Open Your 2012 Subaru WRX STI Key Fob and Change Battery

Remote key fob allow easy access to your auto. Once the keyless entry remote battery is weak you will lose your keyless entry fob's ability to use distance opportunities. It's not difficult to change the battery in your key fob with our step by step instruction. All tools, that you need is outlined in this article.

What is the battery remote key fob use

Changing battery in key fob require flat head screwdriver and 1xCR2025 battery. Prepare these materials and tools before opening and make sure to match the type of your keyless entry fob's batteries.
  • flat head screwdriver
  • 1xCR2025 battery

Step by step guide

Inside of your remote key fob installed tiny coin battery. Gently try to open your keyless entry remote with hands or flat head screwdriver. Change 1xCR2025 battery with flat head screwdriver.

Get new battery and install it in fob’s body. Battery must be placed with the same polarity as was a previous. Your keyless entry remote will not work if you by mistake put battery wrong way.

Before assembling fob’s case, verify that all working good by testing buttons on key fob.

At this point squeeze keyless entry fob's back cover together. Line your shell two halves together and assemble it in place by hands from top to bottom. If your remote key fob case tightly closed, we done. If not, repeat the last step.

How to change the battery video guide

How to Replace Your Car Key Battery | Subaru

Still not working? Buy new one

Frequently Asked Questions

Keyless entry remote of Subaru WRX STI require 1xCR2025 batteries. Most CR2025 batteries are under $6 depending on the size packaging, type and brand you buy. Take your old battery to the store, to be sure.

Usually, after key battery change, reprogramming not required. Remote key fob reprogramming procedure often described in user's manual of your vehicle.

Yes, you can change battery in your 2012 Subaru WRX STI key yourself. Most difficult part is to disassembly keyless entry fob's case. It's pretty easy with our instruction.

The price to change the battery inside keyless entry remote is in range from $30 to as high as $500 depending on the brand and the service pricing.

Remote key fob batteries in modern cars should be replaced once in three or four years, also this will differ based on frequency of use and quality. If your remote key fob shortened signal strength, you should replace batteries before it stop open doors and make trouble for you.

If your car has low key battery indicator on dashboard, signal strength reduced, fob's battery more than 4 years old or need multiple clicks to unlock or lock doors, in most cases battery replace inside keyless entry remote needed. Current battery is dead or weak with a high probability, but if it's not fix problem, key change or repair needed.
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Fob Compatibility:

  1. FCC ID: CWTWB1U819
  2. Models: 2011-2014 Subaru WRX STI