2005 Mercedes-Benz C55 AMG Key Fob Battery Replacement Instructions

2005 Mercedes-Benz C55 AMG Key Fob Battery Replacement Instructions

If your car keyless entry remote is not working correct, the battery probably must to be replaced. In this article, we explained how to open your key fob and replace a weak or dead battery DIY. If you decide to do it at home near C55 AMG, follow our instruction, but first make sure you have everything you need before you start.

What type battery does 2005 Mercedes-Benz C55 AMG key fob take

Before beginning open key fob be sure that you have all recommended tools and materials: 2xCR2025 batteries and flat head screwdriver.
  • flat head screwdriver
  • 2xCR2025 batteries

Step by step instruction

A small coin battery installed inside the your remote key fob. Remove any internal key before you try to pry apart the remote key fob.

Accurately try to pry apart your remote key fob with flat head screwdriver. Change 2xCR2025 batteries with flat head screwdriver.

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

When the new batteries installed, verify remote key fob by pressing buttons. If all functions works, assemble your keyless entry fob's body in reverse order.

The last thing to do is put your cover back on fob. Gently try to put the pieces in place by hands from top to bottom. Check your keyless entry remote case for gaps. If it is not firmly closed try to repeat last step.

How to replace the battery video guide

SOLVED - Mercedes Benz Keyfob Battery Replacement | Smart Key Fob Dead Batteries

Still not working? Buy new one


Keyless entry remote of Mercedes-Benz C55 AMG use 2xCR2025 batteries. Most CR2025 batteries are under $6 build upon the brand, size packaging and type you buy. You can take old battery to the store, with you to find a proper replacement.

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

Changing your remote key fob battery is easy to do in 2005 Mercedes-Benz C55 AMG. Most of car manufacturers think about customers and make a special hole for remote key fob disassembly.

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

You should change batteries inside key fob of Mercedes-Benz C55 AMG at least every 3-4 years. The lifetime of battery differ on usage time, operating conditions and quality.

If your C55 AMG key fob buttons not working, has low key battery indicator on dashboard, signal strength reduced or fob's battery more than 4 years old, it's probably battery replace in remote key fob needed. Currently installed battery is weak with a high probability, but if it's not help to fix issues, key change or repair required.
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Other Mercedes-Benz Models:

Fob Compatibility:

  1. FCC ID: IYZ 3312
  2. Models: 2005-2006 Mercedes-Benz C55 AMG