How to Replace the Battery in a 2012 Mercedes-Benz E200 Key Fob

How to Replace the Battery in a 2012 Mercedes-Benz E200 Key Fob

If your Mercedes-Benz keyless entry remote isn't open doors well, the cell battery probably needs to be replaced. Below, we described how to disassembly your car keyless entry remote and change your Mercedes-Benz key battery step by step.

What kind of battery key fob require

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

Simple steps to change the battery in your E200's keyless entry remote

A tiny button cell battery installed inside the your key fob. Remove any internal key before you try to pry apart the key fob.

Delicately try to disassemble your keyless entry remote with pry tools. Replace CR2025 batteries with flat head screwdriver.

Get new batteries and install it in fob’s body. Be sure to connect the battery the right way around in a circuit. Your key fob will not work if you place battery wrong way.

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

The last thing to do is put your cover back on fob. Carefully try to assemble the pieces together by hands from top to bottom. If your key case firmly closed, we done. If not, repeat the last step.

Video of keyless entry remote disassembly

Mercedes Benz Key Fob Battery Change - How To DIY Learning Tutorials

Still not working? Buy new one


Remote key fob of Mercedes-Benz E200 require 2xCR2025 batteries. Most CR2025 batteries are under $4-6 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.

Often, after remote key fob battery change, you do not need to reprogram. Remote key fob reprogramming procedure often described in user's manual of your vehicle.

Yes, you can change battery in your 2012 Mercedes-Benz E200 keyless entry remote yourself. Most hard part is to disassembly fob’s case. It's pretty simple with our step by step guide.

The price to replace the battery inside fob is from $30 to as high as $500 depending on the make and the service pricing.

Remote key fob batteries in Mercedes-Benz E200 should be replaced once in 3-4 years, also this will differ based on usage and quality. If your remote key fob decreased signal strength, you should change batteries before it stop close doors and make problems for you.

These signs will warn you that it's probably time to change battery in your Mercedes-Benz E200: low key battery indicator on dashboard, signal strength reduced, multiple clicks to unlock or lock doors required and you didn't change battery more than 4 years.
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Fob Compatibility:

  1. FCC ID: IYZ3317
  2. Models: 2012 Mercedes-Benz E200