Section 9 (Engine Intake System (Induction) And Turbocharger (H4DOTC)): Intercooler: Inspection

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Check that the intercooler has no deformation, cracks or other damages.
Check that the vacuum hose, air by-pass pipe and intake duct have no cracks, damage or loose part.