Check eBay. 
Thank you, jwight. On a worldwide EBay search, only one or two auctions seem remotely legit and applicable—emphasis on remotely, no pun intended 😆Check eBay.![]()
Thank you, gtdump.If the fob itself still works and you have access to a 3D printer...
print Smart fortwo Ignition Knob by Rioryan
then put the fob back together and stick it in your pocket. You can now leave the key in the car and the car should recognize the fob in your pocket; anyone else can't start it because they immobilizer will disable the car.
Or if a dab of glue can delay that expensive spare key a while longer...
Try this one on eBay: Hot Silicone Car Key Case Cover Fits for Benz Smart City Roadster Fortwo 3Button.I've seen several very old posts with various key fob chat, but none of them seemed to cover my problem, so I'm updating the discussion.
The bits that hold the fob onto a keyring have finally broken. The plastic fob housing in general has seen better days after 13 years of use. The interior "circuit board" is fine, though. My hope is to find a new blank key fob, move the circuit board into it, and have it cut to fit my car.
Possible? How? Alternatives if this isn't possible? FYI—I'm used to dealing with getting parts from Canada, France, and Germany, so that won't be a problem.
Thanks, everyone!
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