Porsche Cayenne 2005 Owner's Manual page 316

4. Fold sections of floor carpet forward.
Unscrew both screws B of the seat mounting.
316
Practical Tips, Minor Repairs
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5. Tilt the seat all the way back.
With the seat tilted back, use the fore-and-aft
adjustment to move the seat forward again.
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6. Open the 4 clamps C of the battery-box lid with
a screwdriver.
7. Remove the battery-box cover with ventilation
duct.
Danger!
Danger of explosion and injury and risk of
short circuit and damage to the alternator
and electronic control units.
f Disconnect the negative cable first, and then
the positive cable.
8. Disconnect the negative cable.
9. Disconnect the positive cable.