if your handle is like the s-class...
i had mine come right off last year
.it's only held in with one screw-torx type,don't know size.that pic of the seal is exactly where you need to go.get a LONG screwdriver(torx)-or thin head flat blade.if you have the hanle off you must have the handle 'open' when reinstalling.it will fit into a slot and then you'll seat and slide it forward and then back towards the seal hole.put some loctite on the threads of the screw
'95 s500 (bought for wife but can't bear to share!!!) 125kms
'92 legend 180kms
'88 tbirdturbo(fantastic car-only regular maint.)120kms
'87 mustang gt(gone)
'85 mustang gt(gone-but not forgotten)