Originally Posted by
SD Crossfire
My replacement key is a Mercedes keyfob the previous owner bought from Ebay for cheap, along with a new blank key. I would go that direction. You just need to get the new blank cut to match, install it on the fob and the programming seems easy to do on your own assuming you have an original keyfob.
Please make sure you mention
if the FOB case is replaced that the RFID chip is brought to the new case. Losing that chip has been very expensive for many members who weren't aware that chip MUST be transposed into the new case. Also, there are quite a lot of FOB boards that may not be the right frequency (if everything else is working correctly) that would result in the locking system by that FOB, not working, because it isn't the correct frequency for the receiver.
Again, many members have purchased FOB's thinking it looks like it or it doesn't work due to a damaged board/different frequency only to find the results are two steps backwards with a different situation than a FOB case being broken (plus the original issue if there is one).
.