Sunroof Cassette
Cassette means 'little box' in French, and refers to anything which comes in a little box, and as cars are modular these days, that can be a great many things.
However, when we say 'cassette' we are usually referring to the sunroof unit, which sits in a plastic tray which serves as a drainage trough.
The sunroof panel may have weather striping around it, but usually this isn't designed to be waterproof. Instead, water passing this drains into the cassette. From there, there are two or four drainage pipes which let the water drain to the bottom of the car.
If those pipes become blocked, which is extremely common, the cassette will fill with water, and then when you drive the car the water will slop over the sides of the cassette and pour through the headlining.
Written by Danny Argent. Last updated 27/10/2023 14:36