2003 Mercedes-Benz E500 Key Fob Battery Replacement Guide

2003 Mercedes-Benz E500 Key Fob Battery Replacement Guide

Remote key fob allow access to your auto. If the keyless entry remote battery is dead you’ll not to be able close car remotely. In this case, you will benefit from knowing how to disassembly your car keyless entry remote and replace a dead or weak battery DIY. If you choose to do it at home near E500, follow our instruction, but first make sure you have all you need.

What type battery does 2003 Mercedes-Benz E500 remote key fob required

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

Step by step guide

A coin battery installed inside the your keyless entry remote. Remove any internal key first, and then try to pry apart the remote key fob.

Delicately try to disassemble your key with pry tools. Remove 2xCR2025 batteries with flat head screwdriver.

Get new batteries and install it inside fob’s case. 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.

Before assembling fob’s case, make sure that all functions works by pressing buttons on keyless entry remote.

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

Video of key fob disassembly

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Keyless entry remote of Mercedes-Benz E500 require 2xCR2025 batteries. Most CR2025 batteries are under $4-6 depending on the brand, size packaging and type you buy. You can take old battery to the store, to find a proper replacement.

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.

Replacing your remote key fob battery is simple to do in 2003 Mercedes-Benz E500. Most of car manufacturers think of the customers and make a special hole for key fob disassembly.

Auto repair shop's cost for change the battery in remote key fob is $50-600 depending on the brand.

You should change batteries inside key fob of Mercedes-Benz E500 at least every 4 years. The term of battery vary on their amount of use, quality and operating conditions. Lithium cells usually will last longer.

If your E500 fob's battery more than 4 years old, 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 in remote key fob required. Installed battery is dead or weak with a high probability, but if it's not fix, keyless entry remote replace or repair required.
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Other Mercedes-Benz Models:

Fob Compatibility:

  2. Models: 2002-2006 Mercedes-Benz E500