Date registered: Feb 2015
Vehicle: 1995 SL320, 1995 SL500 ("Red Devil " project), 1998 C280, 2004 E500 4matic
Mentioned: 1 Post(s)
Quoted: 252 Post(s)
There is a post on Facebook today, for later model owners, this maybe the solution if you have no keys:
"FINALLY GOT THE F*#KING SPARE KEY!
My car is 1999 SL500 US version.
It is possible to order the spare key at the MB dealership for the faclift models with newer immobiliser type (transponder chip)
The only key that's still available is the so called "wallet key" or "secondary key".
The key is beeing ordered to your VIN and comes prepared and ready for use.
It opens the locks with the blade and (most important) starts the engine. It does NOT have the remote control.
PART NUMBER 140 760 23 06
Waiting time: 10 days"
And a picture of it... Hope this helps?