Q: How to install the rear spoiler sub-assembly and back door trim upper panel assembly on Scion xD?
A: First position the 4 new gaskets before installing the rear spoiler while joining its 2 clips and tightening all 4 bolts to 9.0 Nm (90 kgf-cm, 78 in-lbf). Afterward, install the hole plugs. Install back door side garnishes according to the same process for both left-hand and right-hand sides of the vehicle. Install back door trim upper panel assembly as the last step.