How to Replace the Battery in a 2003 Mazda 6 Key Fob

How to Replace the Battery in a 2003 Mazda 6 Key Fob

Remote key fob grant access to your car. If the key fob battery is dead or weak you lose your fob’s ability to control remote opportunities. In this post, we walks you through how to open your car keyless entry remote and change your Mazda key battery.

What is the battery key fob require

Before going to disassembly keyless entry remote make sure that you have all required tools and materials: CR2025 battery and flat head screwdriver.
  • 1xCR2025 battery
  • flat head screwdriver

Simple steps to replace the battery in your 6's key fob

Inside of your keyless entry remote installed small button cell battery. Carefully try to pry apart your key fob with flat head screwdriver. Change 1 CR2025 battery with flat head screwdriver.

Change old battery with fresh one CR2025. Battery must be installed with the same polarity as was an old. Your key will not work if you by mistake put battery wrong way.

When the new battery installed, verify remote key fob by pressing buttons. If everything is functioning, assemble your fob’s body in reverse order.

The last thing to do is put your cover back on fob. Accurately try to put the pieces together by hands from top to bottom. If your keyless entry remote shell firmly closed, we done. If not, repeat the last step.

How to replace the battery video instruction

Mazda 6 Sedan Rounded Key Fob Battery Replacement (2003 - 2005)

Still not working? Buy new one

Frequently Asked Questions

Remote key fob of Mazda 6 require 1xCR2025 batteries. Price for CR2025 batteries are under $6 depending on the type, brand and size packaging you buy. You can take old battery to the store, to find a proper replacement.

Often, after key battery replace, reprogramming not required. Don't be scare of this procedure, because often it's described in user's manual.

Changing your keyless entry remote battery is easy to do in 2003 Mazda 6. Most of car manufacturers think about customers and make a special hole for keyless entry remote open.

The price to replace the battery in key can run anywhere $50-600 depending on the make and the service station.

Remote key fob batteries in Mazda 6 should be replaced once in three years, but this will differ based on frequency of use and build quality. If your key fob shortened signal strength, you should replace batteries before it stop working and make problems for you.

These signs will warning you that it's perhaps time to replace battery in your 2003 Mazda 6: low key battery indicator on dashboard, multiple clicks to unlock or lock doors required, signal strength reduced and key fob buttons not working.
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Fob Compatibility:

  1. FCC ID: KPU41805
  2. Models: 2003-2005 Mazda 6