Smart Fortwo
Key Fob Battery Replacement Guide
How to change a dead battery in the key
fob remote control for a 2nd generation 2008 to 2014 Smart Fortwo city car.
2013 Smart Fortwo Key Fob |
Back Side of Key Fob |
This
automotive maintenance tutorial was specifically written to assist
owners of the second generation (2008, 2009, 2010, 2011, 2012, 2013
and 2014) Smart Fortwo compact city car in changing a dead battery
in the key fob remote control for the keyless entry system. Owners of any Smart Fortwo models or trim levels such as the coupe hatchback, cabriolet or "cabrio", electric, pure, passion, forfour, prime and proxy may also find these DIY instructions to be helpful. The compatible replacement coin cell (A.K.A. "watch" or "button") type battery is part number CR2016 which is available from various manufacturers such as Panasonic, Sony, Duracell, Energizer and Maxell. The only tool needed to access and replace the battery is a flathead screwdriver or a plastic pry bar tool. |
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Notch / Slot - Top Edge |
Pry Apart Two Halves |
To prevent from
scratching the plastic surfaces, I'd recommend either covering the tip of
your screwdriver with a thin micro fiber cloth or use a plastic
pry bar tool.
Remove the key ring and you other keys from the fob. Locate the slot or "notch" at the top edge of the key fob near the red rubber "Panic" alarm button. Insert the flathead screwdriver or something similar like a coin or butter knife in to the slot and gently pry apart the two halves of the fob. |
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Key Fob Separated |
Remove Old Battery |
Set aside the front
half of the fob that contains the green circuit board remote control unit. Gently pry out the old battery from the socket in the back cover of the fob attached to the metal ignition key. Try to avoid bending or damaging the metal electrical contacts. |
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Old Battery Removed |
Panasonic CR 2016 3V |
The OEM (original equipment manufacturer) battery was a Panasonic CR2016 3 volt lithium ion coin cell. | |
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"+" Positive Side Down |
Insert New Battery |
The battery socket
has a "+" sign printed on it to indicate that the new battery should be
installed with the positive "+" side facing down and the "-" negative side
facing up towards you. Push a new # CR2016 battery in to the holder with the "+" positive side with the brand name facing down and the blank "-" negative side facing up. |
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Install New Battery |
Line Up Remote Control |
Line up the front half of the fob with the back cover. | |
Snap Together Two Halves |
Key Fob Re-Assembled |
Gently pop together the two halves of the key fob until they are flush together at every edge. | |
Key Fob Battery Replaced |
Test New Key Fob Battery |
To test the new
battery, stand near your car and press the "Unlock" or "Lock" buttons on the
key fob. If the new battery is working properly, you should see the parking lights flash and also hear the door locks opening or closing. For more, check out all of my
2008-2014 Smart Fortwo DIY Repair & Maintenance Guides. |
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