which makes me wonder, there's a button under the hood, on the left side, Wth is it there for?

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

Security system?

Sixto
87 300D

I read that in another post while researching. But why would the alarm care if the hood is open?

FWIW, my car came without an alarm. I just have a blank plug under the passenger carpet where the alarm harness would plug into the "brain"

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----Adam

1985 300SD 322,000

Opening the hood allows you to hot-wire the car or steal the battery.

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970