last I knew for sure, every bladed mechanical key has a part number which
corresponded to the Smartkey they are paired with, as each generation of
Smartkey has a slightly different size, thus necessitating different size blade
when holstered. they bladed key should be $5 dealer cost, or about $15
retail
insofar as ordering a Smartkey by mail, I would be surprised if they did allow
that anymore. I organized a group buy years ago for Smartkeys ($60-ish) and
believed that raised the ire of MBUSA, after which they declared such practice
void through their dealers. they instituted '
theft relevant policy' and can be
quite adamant about having the vehicle brought to the dealer for VIN and owner verification.
the only way around this might be an MBUSA recognized locksmith who may
have some latitude in requiring the vehicle to be on site at the dealer, or towed
in.