This is a 2008 R350. Rubber seems to have come out of the wiper arm linkage. How do I replace this bushing? I don't see a head anywhere that I can get a wrench on. Does it press in?

TIA

__________________
08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280