How to Replace the Battery in a 2006 Mercedes-Benz SL500 Key Fob

How to Replace the Battery in a 2006 Mercedes-Benz SL500 Key Fob

Remote key fob allow easy access to your auto. If the remote key fob battery is dead you will not to be able lock trunk or doors remotely. In this case, you’ll benefit from knowing how to open Mercedes-Benz remote key fob and change a discharged battery DIY. If you gonna solve to do it at home near SL500, use this guide, but don't forget to check everything you need.

What size battery does 2006 Mercedes-Benz SL500 key fob required

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

Step by step instruction

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

Delicately try to open your key fob with pry tools. Remove CR2025 batteries with flat head screwdriver.

Get new batteries and install it inside keyless entry fob's body. 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 polarity on battery, by "+" mark.

When the new batteries installed, verify key fob functionality by pressing buttons. If everything is functioning, assemble your fob’s case in reverse order.

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

Video of key fob opening

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Frequently Asked Questions

Keyless entry remote of Mercedes-Benz SL500 require 2xCR2025 batteries. Price for CR2025 batteries are under $6 build upon the brand, size packaging and type you buy. You can take old battery to the store, to find a proper replacement.

Usually, after keyless entry remote battery replace, reprogramming not required. Key fob reprogramming procedure often described in user's manual of your vehicle.

Replacing your keyless entry remote battery is simple to do in 2006 Mercedes-Benz SL500. Most of car manufacturers think about clients and make a special hole for remote key fob open.

The price to replace the battery in key can run anywhere from $30 to as high as $500 depending on the car and the service station.

Key fob batteries in Mercedes-Benz SL500 should be changed once in 4 years, also this will vary based on their amount of use and quality. If your remote key fob reduced signal strength, you should replace batteries before it stop close doors and make problems for you.

If your SL500 key fob buttons not working, signal strength reduced, has low key battery indicator on dashboard or fob's battery more than 4 years old, in most cases battery replace inside key fob needed. Current battery is dead or weak with a high probability, but if it's not help to fix issues, keyless entry remote change or repair required.
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Other Mercedes-Benz Models:

Fob Compatibility:

  2. Models: 2003-2006 Mercedes-Benz SL500