2002 Mercedes-Benz E430 Key Fob Battery Replacement Guide

2002 Mercedes-Benz E430 Key Fob Battery Replacement Guide

If your auto remote key fob isn't unlock doors well, the battery likely must to be changed. In this article, we outlined how to disassembly your car remote key fob and change your Mercedes-Benz key battery.

What size battery does 2002 Mercedes-Benz E430 key fob take

Prior to open keyless entry remote check all that you need: two CR2025 batteries and flat head screwdriver.
  • 2xCR2025 batteries
  • flat head screwdriver

Step by step instruction

Inside of your keyless entry remote installed button cell battery. Move the key out of the way if it is in the remote key fob.

Gently try to disassemble your key fob with pry tools. Remove CR2025 batteries with flat head screwdriver.

Now it's time to install new batteries inside keyless entry fob's body. Battery must be placed with the same position as was a previous. Your remote key fob will not work if you by mistake place battery wrong way.

Before assembling fob’s case, check that all functions works by pressing buttons on circuit board.

At this point squeeze fob’s back cover together. Line your body pieces together and assemble it together by hands from top to bottom. If your keyless entry remote shell tightly closed, we done. If not, repeat the last step.

Video of key opening

Mercedes Benz Key Fob Case Change and Battery Replacement Remote

Still not working? Buy new one

Frequently Asked Questions

Keyless entry remote of Mercedes-Benz E430 require 2xCR2025 batteries. Price for CR2025 batteries are under $4-6 depending on the brand, size packaging and type you buy. Take your old battery to the store, to be sure.

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

Replacing your key fob battery is easy to do in 2002 Mercedes-Benz E430. Most of car manufacturers think about clients and make a special hole for remote key fob disassembly.

The cost to change the battery in fob is in range $50-600 depending on the brand and the service station.

You should change batteries inside remote key fob of modern cars at least every 4 years. The term of battery vary on frequency of use, quality and operating conditions.

These signs will alert you that it's probably time to change battery in your 2002 Mercedes-Benz E430: multiple clicks to unlock or lock doors required, low key battery indicator on dashboard, you didn't change battery more than 4 years and signal strength reduced.
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Fob Compatibility:

  2. Models: 1998-2002 Mercedes-Benz E430