How to Replace the Battery in a 2004 Mercedes-Benz SL55 AMG Key Fob

How to Replace the Battery in a 2004 Mercedes-Benz SL55 AMG Key Fob

If your SL55 AMG key isn't open doors correct, the cell battery more likely must to be changed. Below, we outlined how to open your car remote key fob and change your Mercedes-Benz key battery step by step.

What is the battery keyless entry remote require

Before going to disassembly remote key fob check all that you need: CR2025 batteries and flat head screwdriver.
  • flat head screwdriver
  • 2xCR2025 batteries

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

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

Carefully try to open your keyless entry remote with flat head screwdriver. Remove 2 CR2025 batteries with flat head screwdriver.

Change old batteries with fresh one CR2025. Be sure to connect the battery the right way around in a circuit. Your key fob will not work if you place battery wrong way.

Before assembling keyless entry fob's case, verify that all functions works by testing buttons on circuit board.

At this point squeeze keyless entry fob's back cover together. Line your case pieces together and put it together by hands from top to bottom. If your remote key fob case firmly closed, we done. If not, repeat the last step.

Video of key opening

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

Still not working? Buy new one

Frequently Asked Questions

Keyless entry remote of Mercedes-Benz SL55 AMG require 2xCR2025 batteries. Most CR2025 batteries are under $5 build upon the brand, size packaging and type you buy. You can take old battery to the store, with you to find a proper replacement.

Remote key fob in most of cases reprogramming not needed after battery replace. If your key not working, recheck new battery voltage. Otherwise, read user's manual or contact local dealer.

Changing your keyless entry remote battery is simple to do in 2004 Mercedes-Benz SL55 AMG. Most of car manufacturers think of the customers and make a special hole for key fob open.

Auto repair shop's pricing for change the battery in key is from 50 to 600 dollars depending on the brand.

Key fob batteries in modern cars should be replaced every 4 years, but this will vary based on usage and quality. If your key fob decreased signal strength, you should replace batteries before it stop working and make trouble for you.

These symptoms will alert you that it's perhaps time to change battery in your Mercedes-Benz SL55 AMG: key fob buttons not working, multiple clicks to unlock or lock doors required, low key battery indicator on dashboard and signal strength reduced.
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Other Mercedes-Benz Models:

Fob Compatibility:

  2. Models: 2003-2006 Mercedes-Benz SL55 AMG