Rattle - Airduct / Hood Hinge
I had a rattle that only occurred on rough roads. It seemed to come from the passenger side a-pillar / dashboard area. I brought it to Mercedes Benz of Burlington in MA, a super competent shop with great reputation. They determined that it was related to the passenger side hood air vent and hood hinge installation. The redid everything and installed the hood hinge such that there was zero stress in the system. The problem seems to be gone. There is actually a PTSS case (LI62.30-P-061211) for this one, so it was a known issue. Perhaps this is a useful hint and some of you have the same issue. I would not have guessed this was the issue from the noise. It is very obscure.
Last edited by rt7085; 10-04-2018 at 07:25 AM.