Very sad that I have not been able to find this DIY for you.
Note: you have a W210 E-Class.



PART NUMBER SEARCH RESULTS WITH PRICES
Vehicle 1997 Mercedes Benz E 300 D Sedan
Part: Combination Switch
Note: Turn Signal
P3010-133518 Combination Switch IN STOCK $114.66

P3010-133518 Combination Switch Vemo IN STOCK $114.66

http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1VE10RDJ21VF15I7OF&year=1997&make=MB&model=E-300D-002&category=P&part=Combination+Switch



Have a great day.

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/