[300SHemiguy]

My 2019 300S leaks when it rains from the back interior lights (both sides).

On the Highway at high speeds there are rattling sounds, it seems like it’s coming from the passenger side vent.

 

[Bibby]

Do you have a sunroof? If so maybe you need to clean vents

 

[Curious Joe]

My 2019 300S leaks when it rains from the back interior lights (both sides).

On the Highway at high speeds there are rattling sounds, it seems like it’s coming from the passenger side vent.

Welcome to the forum from the Piedmont region of
North Carolina.

Moonroof? Clogged Drains can be the likely culprit for roof leaks. YouTube vids on the subject.

Rattle in the passenger side vent? Take a look with a flashlight first. Perhaps someone put something in there that didn’t belong. Is this car a recent purchase? My 2020; replaced a 2004 Mercury Marauder and 2005 Mustang GT.☺

 

[Packard]

My old Acura Legend had all four drains clogged. I was able to snake out the two front ones, but not the rears.

It was OK driving or parked on level ground. If I parked on a hill, I hat to make sure to point the car down hill.

I suppose the rear drains could be cleared from under the car, but I never took care of it.

 

[300SHemiguy]

Do you have a sunroof? If so maybe you need to clean vents

Chrysler tells me that the gallery needs replacing for a grand total of $720…. WHAT??

 

[Packard]

What is a “gallery”? I googled “Chrysler 300 gallery” and all I see is photos of Chryslers.