This is the colored plastic tape that shows the temperature setting on the knob, for my 1985 380SE.

Same unit/knob in MERCEDES 260E 1988 124 Type; from ch #A573502
MERCEDES 260E 1989 124 Type
MERCEDES 300D 1990 to 1993 124 Type; (300D)
MERCEDES 300E 1988 124 Type; (300E, CE & TE), from ch #A573502
MERCEDES 300E 1989 to 1993 124 Type; (300E, CE & TE)
MERCEDES 400 1992 to 1993 124 Type; (400E)
MERCEDES 500 1992 to 1993 124 Type; (500E)
MERCEDES E-CLASS 1994 124 Type; (E320, E420 & E500), w/o replaceable filter
MERCEDES E-CLASS 1995 124 Type; (E300D, E320, E420 & E500), w/o replaceable filter
...and probably others. Looks like this:

Attached Thumbnails

 

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1986 560SL
2002 Toyota Camry
1993 Lexus