2002 S430 Mercedes no start after jumping it

2002 S430 Mercedes

ignition no longer turns after jumping battery. where is the pyrofuse located, the crash battery fuse?

In general the fuse is located between the battery positive post and the starter. Sometimes it is located int he fuse box. The exact location should be outlined in the owners manual that came with the vehicle when purchased. Replacing the fuse should take care of the issue. And of course all testing should be done with a known good fully charged battery.