Observe the notes on electrical fuses More.
Have the following tools readily available:
a dry cloth
a screwdriver with an appropriate head
Depending on the vehicle equipment, access to the fuse box may be limited. Mercedes-Benz recommends consulting a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.
If the windscreen wipers start moving when the bonnet is open, you could be trapped by the wiper linkage.