How to Replace the Battery in a 2015 Smart Fortwo Key Fob

How to Replace the Battery in a 2015 Smart Fortwo Key Fob

Key fob grant access to your auto. If the keyless entry remote battery is discharged you lose your keyless entry fob's ability to use remote opening function. In this article, we explained how to disassembly your car keyless entry remote and replace your Smart key battery.

What size battery does 2015 Smart Fortwo key fob take

Replacing battery in key fob require 1xCR2016 battery and flat head screwdriver. Prepare these materials and tools before opening and make sure to match the type of your keyless entry fob's batteries.
  • 1xCR2016 battery
  • flat head screwdriver

Step by step instruction

A small button cell battery installed inside 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 pry tools. Remove 1 CR2016 battery with flat head screwdriver.

Now it's time to install new battery in keyless entry fob's case. Battery must be placed with the same position as was a previous. Your keyless entry remote will not work if you by mistake put battery wrong way.

When the new battery installed, check remote key fob functionality by pressing buttons. If all functions works, assemble your fob’s case in reverse order.

The last thing to do is put your cover back on fob. Delicately try to put the two halves together by hands from top to bottom. Check your remote key fob body for gaps. If it is not firmly closed try to repeat last step.

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Frequently Asked Questions

Key fob of Smart Fortwo require 1xCR2016 batteries. Most CR2016 batteries are under $5 depending on the brand, type and size packaging you buy. Take your old battery to the store, to find a proper replacement.

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

Yes, you can replace battery in your 2015 Smart Fortwo key fob yourself. Most hard part is to open keyless entry fob's case. It's pretty easy with our instruction.

The price to change the battery inside fob is in range from $30 to as high as $500 depending on the brand and the service pricing.

Key fob batteries in Smart Fortwo should be replaced once in three or four years, also this will differ based on their amount of use and battery quality. If your key fob reduced signal strength, you should replace batteries before it stop close doors and make problems for you.

These signs will alert you that it's probably time to replace battery in your 2015 Smart Fortwo: you didn't change battery more than 4 years, signal strength reduced, low key battery indicator on dashboard 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