2004 Mercedes-Benz G500 Key Fob Battery Replacement Guide

2004 Mercedes-Benz G500 Key Fob Battery Replacement Guide

If your Mercedes-Benz key fob isn't open doors correct, the cell battery probably needs to be changed. In this post, we are going to tell you how to open your car remote key fob and change a dead battery yourself. If you decide to do it at home near G500, use this guide, but don't forget to check all you need before you start.

What type battery does 2004 Mercedes-Benz G500 key fob required

Before starting open key fob make sure that you have all recommended tools and materials: flat head screwdriver and 2 CR2025 batteries.
  • flat head screwdriver
  • 2xCR2025 batteries

Step by step guide

Inside of your keyless entry remote installed tiny button cell battery. Move the key out of the way if it is in the remote key fob.

Accurately try to pry apart your key with flat head screwdriver. Replace CR2025 batteries with flat head screwdriver.

Replace old batteries with new 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.

After the new batteries installed, verify key fob by pressing buttons. If everything is functioning, assemble your keyless entry fob's case in reverse order.

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

Key Fob Battery Replacement 2004 Mercedes-Benz G500 Video

Mercedes Benz Key Fob Case Change and Battery Replacement Remote

Still not working? Buy new one


Key fob of Mercedes-Benz G500 use 2xCR2025 batteries. Price for CR2025 batteries are under $5 depending on the size packaging, brand and type you buy. Take your 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. Don't be scare of this procedure, because often it's described in user's manual.

Yes, you can change battery in your 2004 Mercedes-Benz G500 keyless entry remote yourself. Most hard part is to disassembly keyless entry fob's case. It's pretty simple with our step by step guide.

The price to change the battery in key is in range from $30 to as high as $500 depending on the brand and the service station.

Key fob batteries in Mercedes-Benz G500 should be replaced once in four years, but this will differ based on usage and build quality. If your remote key fob reduced signal strength, you should change batteries before it stop close doors and make trouble for you.

If your car key fob buttons not working, signal strength reduced, need multiple clicks to unlock or lock doors or has low key battery indicator on dashboard, it's probably battery replace in key fob required. Current battery is dead or weak with a high probability, but if it's not fix, key fob change or repair needed.
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Fob Compatibility:

  1. FCC ID: IYZ 3312
  2. Models: 2002-2005 Mercedes-Benz G500