How to Open Your 2010 Mercedes-Benz E300 Key Fob & Change Battery

How to Open Your 2010 Mercedes-Benz E300 Key Fob & Change Battery

If your auto remote key fob isn't unlock doors correct, the battery surely must to be changed. In this article, you will benefit from knowing how to open Mercedes-Benz remote key fob and replace a weak battery DIY. If you decide to do it at home near E300, follow our guide, but don't forget to check everything you need before you start.

What type battery keyless entry remote use

Replacing batteries in remote key fob require CR2025 batteries and flat head screwdriver. Prepare these materials and tools before opening and make sure to match the type of your keyless entry fob's batteries.
  • 2xCR2025 batteries
  • flat head screwdriver

Simple steps to replace the battery in your E300's key fob

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.

Delicately try to open your key with flat head screwdriver. Change two CR2025 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 current cannot go into your circuit board and make it work. Check position on battery, by "+" mark.

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

At this point squeeze fob’s back cover together. Line your body pieces together and put it together by hands from top to bottom. Check your keyless entry remote shell for gaps. If it is not firmly closed try to repeat last step.

How to change the battery video guide

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

Still not working? Buy new one

Frequently Asked Questions

Keyless entry remote of Mercedes-Benz E300 require 2xCR2025 batteries. Price for CR2025 batteries are under $4 depending on the type, brand and size packaging you buy. You can take old battery to the store, to find a proper replacement.

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

Changing your key fob battery is simple to do in 2010 Mercedes-Benz E300. Most of car manufacturers think of the customers and make a special hole for remote key fob open.

Dealer service price for replace the battery in keyless entry remote is from $30 to as high as $500 depending on the car.

You should replace batteries inside keyless entry remote of Mercedes-Benz E300 at least once in 3-4 years. The term of battery differ on their amount of use, operating conditions and quality. Lithium cells normally will last longer.

These symptoms will warn you that it's perhaps time to replace battery in your 2010 Mercedes-Benz E300: you didn't change battery more than 4 years, low key battery indicator on dashboard, key fob buttons not working and multiple clicks to unlock or lock doors required.
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Other Mercedes-Benz Models:

Fob Compatibility:

  1. FCC ID: IYZ3317
  2. Models: 2008-2012 Mercedes-Benz E300