Finger is too big - the square part around the LED plays no part in the switch. The button cap is pressing on the very small plastic lever/tab attached to the contacts, sticking through the panel. It’s barely 1mm x 1mm.

To press the switch, you need a very small (jewellers) screwdriver or maybe a tiny Allen key etc.

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Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)