How to Replace the Battery in a 2007 Mercedes-Benz E500 Key Fob

How to Replace the Battery in a 2007 Mercedes-Benz E500 Key Fob

If your E500 keyless entry remote is no longer unlock doors perfectly, the battery more likely needs to be replaced. Below, we explained how to disassembly Mercedes-Benz remote key fob and replace a discharged battery DIY. If you choose to do it at home near E500, use this guide, but first make sure you have tools and materials required.

What type battery key fob use

Changing 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

Step by step guide

A small button cell battery installed in the your keyless entry remote. Remove any internal key before you try to pry apart the key fob.

Carefully try to pry apart your keyless entry remote with pry tools. Change two CR2025 batteries with flat head screwdriver.

Change old batteries with new one CR2025. Battery must be installed with the same polarity as was a previous. Your remote key fob will not work if you mistakenly place battery wrong way.

When the new batteries installed, check key fob by pressing buttons. If everything working good, assemble your keyless entry fob's body in reverse order.

At this point squeeze keyless entry fob's back cover together. Line your shell pieces together and put it together by hands from top to bottom. If your fob body firmly closed, we done. If not, repeat the last step.

Video of keyless entry remote disassembly

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

Still not working? Buy new one


Key fob of Mercedes-Benz E500 use 2xCR2025 batteries. Most CR2025 batteries are under $4-6 build upon the size packaging, type and brand you buy. Take your old battery to the store, to be sure.

Usually, after key battery replace, reprogramming not required. Key fob reprogramming procedure often described in user's manual of your vehicle.

Replacing your keyless entry remote battery is easy to do in 2007 Mercedes-Benz E500. Most of car manufacturers think of the customers and make a special hole for keyless entry remote open.

The cost to change the battery inside key fob can run anywhere $50-600 depending on the car and the service pricing.

Key fob batteries in Mercedes-Benz E500 should be changed once in four years, also this will differ based on their amount of use and quality. If your keyless entry remote decreased signal strength, you should change batteries before it stop open doors and make problems for you.

If your Mercedes-Benz need multiple clicks to unlock or lock doors, signal strength reduced, has low key battery indicator on dashboard or fob's battery more than 4 years old, it's probably battery replace inside key fob needed. Current battery is discharged with a high probability, but if it's not help to fix issues, fob change or repair needed.
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Other Mercedes-Benz Models:

Fob Compatibility:

  1. FCC ID: IYZ3317
  2. Models: 2007-2012 Mercedes-Benz E500