The bulb is soldered in, internal to the display, not intended to be replaceable. I've never replaced one but my Daughter's '94 needs one so I bought a new temp unit.

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Gone to the dark side

- Jeff

It looks from the epc like there is a replacement bulb, so I wonder about it being soldered into place as an entire assembly. Part #001-544-85-94.

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1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't