How to Open Your 2003 Honda Civic Key Fob and Change Battery

How to Open Your 2003 Honda Civic Key Fob and Change Battery

If your car remote key fob is not working correct, the cell battery surely needs to be changed. In this post, we walks you through how to open your remote key fob and replace your Honda key battery step by step.

What type battery does 2003 Honda Civic remote key fob take

Before starting open key fob check all that you need: 1xCR2025 battery, flat head screwdriver and phillips head screwdriver.
  • 1xCR2025 battery
  • flat head screwdriver
  • phillips head screwdriver

Step by step guide

Inside of your keyless entry remote installed tiny coin cell battery. Remove screw on the back of the key fob. Flip the keyless entry remote over and look for at least one screw holding in the plastic.

Delicately try to pry apart your fob with hands or flat head screwdriver. Change 1 CR2025 battery with flat head screwdriver.

Get new battery and install it inside keyless entry fob's body. Battery must be installed with the same position as was a previous. Your remote key fob will not work if you by mistake put battery wrong way.

When the new battery installed, verify keyless entry remote functionality by pressing buttons. If everything working fine, assemble your keyless entry fob's shell in reverse order.

The last thing to do is put your cover back on fob. Delicately try to assemble the two halves together by hands from top to bottom. If your key body firmly closed, we done. If not, repeat the last step. Screw the back of the key fob.

How to replace the battery video instruction

How to Replace Honda Accord Civic Cross Tour Pilot Key Fob Battery Change CR1616

Still not working? Buy new one


Key fob of Honda Civic use 1xCR2025 batteries. Most CR2025 batteries are under $4-6 build upon the size packaging, brand and type you buy. You can take old battery to the store, to find a proper replacement.

Usually, after key fob battery replace, reprogramming not required. Keyless entry remote reprogramming procedure often described in user's manual of your vehicle.

Replacing your remote key fob battery is easy to do in 2003 Honda Civic. Most of car manufacturers think of the customers and make a special hole for remote key fob open.

Auto repair shop's pricing for change the battery in fob is from $30 to as high as $500 depending on the brand.

You should replace batteries inside key fob of modern cars at least once in three years. lifespan of battery differ on their amount of use, quality and operating conditions. Lithium cells normally will last longer.

These symptoms will warn you that it's possible time to change battery in your Honda Civic: you didn't change battery more than 4 years, signal strength reduced, low key battery indicator on dashboard and multiple clicks to unlock or lock doors required.
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Fob Compatibility:

  1. FCC ID: OUCG8D-344H-A
  2. Models: 2002-2005 Honda Civic