Porsche Cayenne Owner's Manual page 352

Removing subwoofer
1. Withdraw the ignition key.
Remove the Porsche Entry & Drive control unit
from the ignition lock in vehicles that contain
this feature.
Please observe the chapter "REMOVING THE
CONTROL UNIT FROM THE IGNITION LOCK" on
Page 70.
2. Remove any existing tire sealant C.
352
Practical Tips, Minor Repairs
3. Undo the two fastening nuts D.
4. Unscrew screw E.
5. Disconnect plug connection F.
6. Remove subwoofer housing.
Installing subwoofer
1. Insert subwoofer housing.
2. Connect plug connection F.
3. Tighten the two fastening nuts D.
4. Tighten screw E.
5. Place any existing tire sealant C in recess.