How to Open Your 2011 Mercedes-Benz S550 Key Fob & Change Battery

How to Open Your 2011 Mercedes-Benz S550 Key Fob & Change Battery

If your car key fob is no longer open doors perfectly, the battery likely needs to be changed. In this post, we outlined how to disassembly your car key fob and replace your Mercedes-Benz key battery.

What type battery does 2011 Mercedes-Benz S550 remote key fob required

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

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

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

Accurately try to pry apart your fob with flat head screwdriver. Remove CR2025 batteries with flat head screwdriver.

Now it's time to install new batteries in fob’s case. Every battery has a negative and positive side and if you put the wrong connector down, the charge cannot go into your circuit board and make it work. Check position on battery, by "+" mark.

Before assembling fob’s case, make sure that all working good by testing buttons on remote key fob.

At this point squeeze fob’s back cover together. Line your shell two halves together and assemble it together by hands from top to bottom. Check your keyless entry remote body for gaps. If it is not tightly closed try to repeat last step.

Key Fob Battery Replacement 2011 Mercedes-Benz S550 Video

Mercedes Benz Keyfob Battery Replacement SmartKey Keyless Easy to do

Still not working? Buy new one

FAQ

Key fob of Mercedes-Benz S550 use 2xCR2025 batteries. Price for CR2025 batteries are under $4-6 depending on the size packaging, type and brand you buy. You can take old battery to the store, to be sure.

Often, after remote key fob battery replace, you do not need to reprogram. Don't be scare of this procedure, because often it's described in user's manual.

Replacing your keyless entry remote battery is simple to do in 2011 Mercedes-Benz S550. Most of car manufacturers think about clients and make a special hole for keyless entry remote open.

The price to replace the battery in key can run anywhere $50-600 depending on the make and the service station.

You should change batteries inside remote key fob of Mercedes-Benz S550 at least every 4 years. lifespan of battery vary on their amount of use, operating conditions and quality. Lithium cells normally will last longer.

These symptoms will alert you that it's possible time to replace battery in your 2011 Mercedes-Benz S550: low key battery indicator on dashboard, signal strength reduced, multiple clicks to unlock or lock doors required and you didn't change battery more than 4 years.
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Other Mercedes-Benz Models:

Fob Compatibility:

  1. FCC ID: IYZ3317
  2. Models: 2007-2012 Mercedes-Benz S550