Making Ground Connection Using A Through Bolt

WARNING: This page is about a different car, the 2023 Porsche Panamera and 2022 Porsche Panamera. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Diagram

-A-	COUNTERSUNK SCREW 999.073.549.01
-B-	HEXAGON NUT 900.377.003.01
-C-	Component 1
-D-	Component 2
-E-	Adhesive
-F-	Sealing compound

Drill a hole > Diameter 4 mm

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Drilling hole
Remove dirt and primer on both sides using an end brush > 9399/3 - end brush .

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Removing primer
Drill out the bore > Diameter 8 mm

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Drilling out bore
De-burr the bore on both sides.
Fit countersunk screw through the bore and secure it with a hexagon nut > COUNTERSUNK SCREW 999.073.549.01 > HEXAGON NUT 900.377.003.01
Tighten threaded joint to the specified torque > Tightening torque 15 Nm (11 ftlb.)
Seal threaded joint.