How to Open Your 2010 Smart Fortwo Key Fob & Change Battery

How to Open Your 2010 Smart Fortwo Key Fob & Change Battery

Keyless entry remote allow access to your Fortwo. When the keyless entry remote battery is weak or dead you will not to be able close doors remotely. In this post, we explained how to disassembly your car keyless entry remote and change your Smart key battery.

What size battery does 2010 Smart Fortwo keyless entry remote take

Prior to disassembly keyless entry remote check all that you need: one CR2016 battery and flat head screwdriver.
  • flat head screwdriver
  • 1xCR2016 battery

Step by step guide

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

Accurately try to disassemble your keyless entry remote with pry tools. Replace 1xCR2016 battery with flat head screwdriver.

Get new battery and install it in fob’s body. Be sure to connect the battery the right way around in a circuit. Your keyless entry remote will not work if you connect battery wrong way.

When the new battery installed, check key fob by pressing buttons. If everything working properly, assemble your fob’s body in reverse order.

The last thing to do is put your cover back on fob. Accurately try to put the pieces together by hands from top to bottom. If your remote key fob case tightly closed, we done. If not, repeat the last step.

Key Fob Battery Replacement 2010 Smart Fortwo Video

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Still not working? Buy new one


Key fob of Smart Fortwo require 1xCR2016 batteries. Price for CR2016 batteries are under $4-6 build upon the brand, type and size packaging you buy. Take your old battery to the store, to be sure.

Often, after key fob battery replace, reprogramming not required. Remote key fob reprogramming procedure often described in user's manual of your vehicle.

Yes, you can change battery in your 2010 Smart Fortwo key fob yourself. Most difficult part is to open fob’s case. It's pretty simple with our instruction.

Auto repair shop's pricing for replace the battery in fob is from 50 to 600 dollars depending on the car.

You should change batteries inside remote key fob of Smart Fortwo at least every 3-4 years. lifespan of battery vary on their amount of use, operating conditions and quality. Famous brands cells usually will last longer.

These signs will warn you that it's probably time to change battery in your Smart Fortwo: signal strength reduced, you didn't change battery more than 4 years, key fob buttons not working and multiple clicks to unlock or lock doors required.
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Fob Compatibility:

  1. FCC ID: KR55WK45144
  2. Models: 2005-2015 Smart Fortwo