I have that feature on my car. I can switch off the light by pulling the plunger straight out. It simply clicks into place and turns the light off. Maybe not all models have it.

__________________
Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record