Porsche 911 Turbo Owner's Manual page 278

Changing bulb for low beam and high beam
(with cornering light)
1. Undo the 3 screws on the control unit and
remove the control unit.
276
Practical Tips, Emergency Service
2. Turn the plug counter-clockwise and pull it off. 3. Disengage both fixing clips.
4. Replace defective bulb.
When doing so, ensure bulb is seated properly.
5. Engage both fixing clips, push on plug and turn
right as far as the stop.
6. Fit control unit and screw tight.
7. Push on housing cover until it perceptibly
engages.
8. Fasten housing cover with the 4 screws.