Mercedes-Benz E-Class Coupe Operator's Manual page 112

Soft top (Cabriolet)
110
Installing
Keeping the AIRCAP wind screen horizon-
X
tal, guide it into the slot between the head
restraints in the direction of the arrow with
both racks straight down.
Push the AIRCAP wind screen down until
X
the bolts are at the same height as the
brackets on the head restraints.
Insert the bolts into the brackets on both
X
sides.
Tighten the bolts with the 4 mm Allen key
X
until they engage.
The markings on the bolts are vertical.