How to Replace the Battery in a 2011 Subaru WRX STI Key Fob

How to Replace the Battery in a 2011 Subaru WRX STI Key Fob

If your WRX STI remote key fob is no longer open doors correct, the cell battery more likely needs to be replaced. In this post, we are going to tell you how to disassembly Subaru key fob and change a discharged battery yourself. If you gonna solve to do it at home near WRX STI, follow our guide, but first make sure you have tools and materials required before you start.

What is the battery key fob use

Before you start to open remote key fob be sure that you have all recommended tools and materials: CR2025 battery and flat head screwdriver.
  • flat head screwdriver
  • 1xCR2025 battery

Simple steps to replace the battery in your WRX STI's keyless entry remote

Inside of your keyless entry remote installed small coin cell battery. Gently try to pry apart your remote key fob with pry tools. Change one CR2025 battery with flat head screwdriver.

Change old battery with fresh one CR2025. Every battery has a negative and positive side and if you put the wrong connector down, the current cannot go into your circuit board and make it work. Check polarity on battery, by "+" mark.

Before assembling fob’s case, verify that all working properly by pressing buttons on circuit board.

At this point squeeze fob’s back cover together. Line your case two halves together and assemble it in place by hands from top to bottom. Check your fob case for gaps. If it is not firmly closed try to repeat last step.

How to replace the battery video instruction

DIY - Subaru Legacy Outback Key Fob Battery Replacement EASY

Still not working? Buy new one


Remote key fob of Subaru WRX STI require 1xCR2025 batteries. Price for CR2025 batteries are under $4-6 depending on the brand, type and size packaging you buy. Take your old battery to the store, to be sure.

Usually, after keyless entry remote battery replace, you do not need to reprogram. Don't be scare of this procedure, because often it's described in user's manual.

Yes, you can change battery in your 2011 Subaru WRX STI key yourself. Most hard part is to open fob’s case. It's pretty simple with our guide.

Dealer service pricing for replace the battery in key fob is $50-600 depending on the brand.

You should change batteries inside key fob of modern cars at least every four years. lifespan of battery vary on usage time, operating conditions and quality. Lithium cells usually will last longer.

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

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