SMART FORTWO CABRIO Operating Instructions Manual page 230

Fuses
Changing a fuse
Shut down all electrical consumers and
switch the ignition off before changing
a fuse.
Take the fuse box out of its holder and
swing it down.
Use the fuse table (see page 230 ff) to
ascertain which fuse is assigned to the
failed consumer.
Remove the corresponding fuse from its
holder.
228 Communications breakdown
Replace the defective fuse with a new
one of identical amperage.
Mount the fuse box back in place.
> Ensure that the lever engages again.