Almost all of the time on the W210 chassis the rear window regulator cable OR pulley will break & the regulator will need replacement. THEY are riveted to the door so you will need to grind & drill out the old rivets. Then either re-rivet or bolt the new regulator back to the door.

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator