How to Replace the Battery in a 2002 Mercedes-Benz S430 Key Fob

How to Replace the Battery in a 2002 Mercedes-Benz S430 Key Fob

Key fob grant access to your Mercedes-Benz. If the key battery is discharged you’ll not to be able unlock doors remotely. In this article, we outlined how to open your car remote key fob and change your Mercedes-Benz key battery step by step.

What type battery does 2002 Mercedes-Benz S430 keyless entry remote required

Prior to disassembly keyless entry remote make sure that you have all required tools and materials: flat head screwdriver and CR2025 batteries.
  • flat head screwdriver
  • 2xCR2025 batteries

Simple steps to change the battery in your car's remote key fob

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

Gently try to pry apart your key fob with pry tools. Change two CR2025 batteries with flat head screwdriver.

Replace old batteries with fresh one CR2025. Battery must be installed with the same position as was an old. Your keyless entry remote will not work if you mistakenly place battery wrong way.

When the new batteries installed, verify key fob by pressing buttons. If everything working properly, assemble your 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 keyless entry remote case for gaps. If it is not firmly closed try to repeat last step.

How to change the battery video instruction

HOW TO Mercedes Benz KeyFob Battery Replacement. Smart key keyless BRC c230 sl500 e320 ml320 DIY Fix

Still not working? Buy new one

FAQ

Keyless entry remote of Mercedes-Benz S430 use 2xCR2025 batteries. Price for CR2025 batteries are under $5 build upon the size packaging, brand and type you buy. You can take old battery to the store, to be sure.

Usually, after key battery replace, reprogramming not required. Don't be scare of this procedure, because often it's described in user's manual.

Changing your keyless entry remote battery is easy to do in 2002 Mercedes-Benz S430. Most of car manufacturers think of the clients and make a special hole for remote key fob disassembly.

Auto repair shop's price for replace the battery in key fob is $50-600 depending on the car.

Remote key fob batteries in Mercedes-Benz S430 should be replaced once in 3-4 years, also this will differ based on frequency of use and build quality. If your key fob shortened signal strength, you should replace batteries before it stop working and make problems for you.

These symptoms will warning you that it's probably time to change battery in your 2002 Mercedes-Benz S430: key fob buttons not working, low key battery indicator on dashboard, multiple clicks to unlock or lock doors required and signal strength reduced.
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Fob Compatibility:

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