2 ND Possibility

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 Porsche Boxster, 2003 Porsche Boxster, 2002 Porsche Boxster, 2001 Porsche Boxster, and 2000 Porsche Boxster. However, it is still accessible from the selected car via links, so may be relevant.

Release switch by turning it 90°, and pull it out of its installation opening.
Pull switch plunger out of the switch as far as it will go.
Reinstall switch. When fitting the switch for the first time, it is important to press vertically against the bearing surface. It will otherwise not be possible to lock the switch (90° turn), even using a lot of force.

NOTE: The switch might not fit in its seat without play after it has been installed and removed several times. As soon as the switch perceptibly "wobbles" in its receiver, it must be replaced by a new switch.