Porsche Boxster Owner's Manual page 265

Changing bulb for turn signal light
Halogen/Bi-Xenon headlights
1. Turn housing cover counter-clockwise and take
it off.
2. Turn bulb holder counter-clockwise and
remove it (bayonet lock).
3. Replace the defective bulb (bayonet lock).
4. Insert the bulb holder and turn it clockwise.
5. Close the housing cover.
Practical Tips, Emergency Service
263