How to Replace the Battery in a 2002 Mercedes-Benz C230 Key Fob

How to Replace the Battery in a 2002 Mercedes-Benz C230 Key Fob

Remote key fob allow access to your C230. Once the remote key fob battery is dead or weak you’ll lose your keyless entry fob's ability to use distance functions. Yes, it is possible to replace the battery in your keyless entry remote with our instruction. All tools, that you need is explained in this article.

What type battery keyless entry remote use

Before starting open remote key fob check all that you need: 2 CR2025 batteries and flat head screwdriver.
  • 2xCR2025 batteries
  • flat head screwdriver

Step by step instruction

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

Accurately try to open your key fob with pry tools. Replace CR2025 batteries with flat head screwdriver.

Get new batteries and install it inside keyless entry fob's body. Be sure to connect the battery the right way around in a circuit. Your keyless entry remote will not work if you connect battery wrong way.

Before assembling keyless entry fob's case, check that all functions works by testing buttons on circuit board.

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

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Still not working? Buy new one

Frequently Asked Questions

Remote key fob of Mercedes-Benz C230 use 2xCR2025 batteries. Most CR2025 batteries are under $6 depending on the size packaging, type and brand you buy. You can take old battery to the store, to be sure.

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

Yes, you can change battery in your 2002 Mercedes-Benz C230 keyless entry remote yourself. Most hard part is to disassembly fob’s case. It's pretty simple with our instruction.

Auto repair shop's price for replace the battery in keyless entry remote is $50-600 depending on the brand.

You should replace batteries inside remote key fob of modern cars at least every three years. lifespan of battery vary on usage time, operating conditions and quality.

If your Mercedes-Benz signal strength reduced, need multiple clicks to unlock or lock doors, has low key battery indicator on dashboard or key fob buttons not working, in most cases battery change inside keyless entry remote needed. Currently installed battery is weak or dead with a high probability, but if it's not help, keyless entry remote replace or repair required.
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Other Mercedes-Benz Models:

Fob Compatibility:

  2. Models: 1998-2006 Mercedes-Benz C230