2004 Mercedes-Benz S430 Key Fob Battery Replacement Guide

2004 Mercedes-Benz S430 Key Fob Battery Replacement Guide

Keyless entry remote allow access to your car. Once the key battery is discharged you’ll not to be able lock car remotely. In this post, we are going to tell you how to open your car remote key fob and replace a weak battery DIY. If you decide to do it at home near S430, use this guide, but don't forget to check tools and materials required.

What type battery keyless entry remote require

Don't forget before disassembly key fob be sure that you have all recommended tools and materials: flat head screwdriver and two CR2025 batteries.
  • 2xCR2025 batteries
  • flat head screwdriver

Simple steps to change the battery in your S430's keyless entry remote

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

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

Get new batteries and install it in keyless entry fob's shell. 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, check key fob by pressing buttons. If everything working fine, assemble your keyless entry fob's body in reverse order.

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

How to replace the battery video instruction

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

Still not working? Buy new one

FAQ

Remote key fob of Mercedes-Benz S430 use 2xCR2025 batteries. Most CR2025 batteries are under $4 depending on the brand, size packaging and type you buy. You can take old battery to the store, to find a proper replacement.

Keyless entry remote in most of cases reprogramming not needed after battery change. If your remote key fob not working, recheck new battery voltage. If it is not help, read user's manual or contact local dealer.

Replacing your remote key fob battery is easy to do in 2004 Mercedes-Benz S430. Most of car manufacturers think of the clients and make a special hole for keyless entry remote open.

The cost to change the battery inside key fob is from $30 to as high as $500 depending on the brand and the service pricing.

You should change batteries inside keyless entry remote of modern cars at least once in four years. The lifetime of battery vary on frequency of use, operating conditions and quality. Famous brands cells usually will last longer.

These signs will warning you that it's possible time to replace battery in your Mercedes-Benz S430: you didn't change battery more than 4 years, multiple clicks to unlock or lock doors required, signal strength reduced and key fob buttons not working.
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Fob Compatibility:

  1. FCC ID: IYZ 3312
  2. Models: 2000-2006 Mercedes-Benz S430