How to Open Your 2003 Mercedes-Benz SLK230 Key Fob & Change Battery

How to Open Your 2003 Mercedes-Benz SLK230 Key Fob & Change Battery

If your Mercedes-Benz keyless entry remote is not working properly, the battery surely needs to be replaced. It's not difficult to replace the battery in your key fob with our step by step instruction. All you need is explained below.

What type battery does 2003 Mercedes-Benz SLK230 remote key fob required

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

Step by step guide

Inside of your remote key fob installed coin battery. Remove any internal key before you try to pry apart the keyless entry remote.

Carefully try to pry apart your remote key fob with flat head screwdriver. Remove 2 CR2025 batteries with flat head screwdriver.

Now it's time to install new batteries in keyless entry fob's shell. Battery must be placed with the same position as was an old. Your key fob will not work if you mistakenly put battery wrong way.

When the new batteries installed, verify key fob functionality by pressing buttons. If all functions works, assemble your keyless entry fob's shell in reverse order.

The last thing to do is put your cover back on fob. Delicately try to put the pieces 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.

Video of key disassembly

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

Still not working? Buy new one

Frequently Asked Questions

Key fob of Mercedes-Benz SLK230 require 2xCR2025 batteries. Price for CR2025 batteries are under $5 build upon the size packaging, brand and type you buy. Take your old battery to the store, to be sure.

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

Changing your remote key fob battery is simple to do in 2003 Mercedes-Benz SLK230. Most of car manufacturers think of the customers and make a special hole for key fob disassembly.

Auto repair shop's pricing for change the battery in remote key fob is from $30 to as high as $500 depending on the brand.

Key fob batteries in Mercedes-Benz SLK230 should be replaced once in four years, also this will differ based on usage and build quality. If your keyless entry remote reduced signal strength, you should replace batteries before it stop close doors and make trouble for you.

These signs will warning you that it's perhaps time to change battery in your 2003 Mercedes-Benz SLK230: low key battery indicator on dashboard, signal strength reduced, key fob buttons not working and you didn't change battery more than 4 years.
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Other Mercedes-Benz Models:

Fob Compatibility:

  1. FCC ID: IYZ 3312
  2. Models: 2000-2004 Mercedes-Benz SLK230