I made the exact same discovery this evening. Pushing the button all the
way forward will have them come on when the doors open. They'll stay
on when you leave the car and go out when you lock the doors.

I assume they'll go out at some point if you don't lock the doors but I
didn't try that.

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1988 MB 560 SEL 138k - Desert Taupe w/ Cream Beige Interior.

Mods:
Euro Headlights w/Smoked Corners
New seats from a `91
ASA 15-Hole Replicas
Sony HU, JL Audio 400/4 Amp, JL Audio 2-way Components on rear deck, JL Audio 3-way Components in door & dash.


2000 BMW Z3 2.3 Roadster 33k
2002 Toyota Rav4L 50k