2002 Mercedes-Benz ML500 Key Fob Battery Replacement Guide

2002 Mercedes-Benz ML500 Key Fob Battery Replacement Guide

If your Mercedes-Benz key fob is not open doors properly, the cell battery more likely needs to be replaced. In this post, we are going to tell you how to disassembly your key fob and replace a weak or dead battery DIY. If you decide to do it at home near ML500, use this guide, but don't forget to check all you need before you start.

What type battery keyless entry remote require

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

Simple steps to replace the battery in your car's keyless entry remote

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

Delicately try to pry apart your fob with flat head screwdriver. Replace 2 CR2025 batteries with flat head screwdriver.

Replace old batteries with fresh one CR2025. Every battery has a negative and positive side and if you put the wrong connector down, the charge cannot go into your circuit board and make it work. Check position on battery, by "+" mark.

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

The last thing to do is put your cover back on fob. Accurately try to assemble the pieces in place by hands from top to bottom. Check your key fob case 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 replacement - DIY

Still not working? Buy new one

FAQ

Keyless entry remote of Mercedes-Benz ML500 use 2xCR2025 batteries. Price for CR2025 batteries are under $4-6 depending on the type, size packaging and brand you buy. You can take old battery to the store, with you to find a proper replacement.

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

Changing your key fob battery is easy to do in 2002 Mercedes-Benz ML500. Most of car manufacturers think of the customers and make a special hole for remote key fob disassembly.

The price to change the battery in fob can run anywhere $50-600 depending on the make and the service station.

You should change batteries inside keyless entry remote of Mercedes-Benz ML500 at least every three years. lifespan of battery differ on usage time, quality and operating conditions. Famous brands cells usually will last longer.

If your Mercedes-Benz signal strength reduced, has low key battery indicator on dashboard, key fob buttons not working or need multiple clicks to unlock or lock doors, it's probably battery change in remote key fob needed. Current battery is weak or dead with a high probability, but if it's not help to fix issues, key fob change or repair needed.
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Other Mercedes-Benz Models:

Fob Compatibility:

  1. FCC ID: IYZ 3312
  2. Models: 2002-2006 Mercedes-Benz ML500