How to Replace the Battery in a 2004 Mercedes-Benz SL600 Key Fob

How to Replace the Battery in a 2004 Mercedes-Benz SL600 Key Fob

If your SL600 keyless entry remote is not working properly, the battery likely must to be changed. It's not difficult to replace the battery in your remote key fob with our instruction. Everything you need is outlined in this article.

What type battery does 2004 Mercedes-Benz SL600 keyless entry remote required

Replacing batteries in keyless entry remote require flat head screwdriver and two CR2025 batteries. Prepare these materials and tools before opening and make sure to match the size of your fob’s batteries.
  • 2xCR2025 batteries
  • flat head screwdriver

Simple steps to replace the battery in your SL600'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.

Accurately try to open your fob with hands or flat head screwdriver. Change two CR2025 batteries with flat head screwdriver.

Now it's time to install new batteries inside keyless entry fob's shell. Be sure to connect the battery the right way around in a circuit. Your key fob will not work if you connect battery wrong way.

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

At this point squeeze fob’s back cover together. Line your body two halves together and assemble it in place by hands from top to bottom. Inspect your remote key fob shell for gaps. If it is not firmly 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


Key fob of Mercedes-Benz SL600 require 2xCR2025 batteries. Most CR2025 batteries are under $4-6 build upon the brand, size packaging and type you buy. Take your old battery to the store, to find a proper replacement.

Usually, after keyless entry remote battery replace, 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 SL600 remote key fob yourself. Most hard part is to open keyless entry fob's case. It's pretty easy with our step by step guide.

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

You should replace batteries inside remote key fob of Mercedes-Benz SL600 at least once in 3-4 years. lifespan of battery differ on usage time, operating conditions and quality.

These signs will warn you that it's possible time to change battery in your 2004 Mercedes-Benz SL600: signal strength reduced, multiple clicks to unlock or lock doors required, low key battery indicator on dashboard and you didn't change battery more than 4 years.
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Fob Compatibility:

  2. Models: 2003-2006 Mercedes-Benz SL600