Post by
carlos_knology »
https://forums.nicoclub.com/carlos-knology-u278.html
Sun Apr 25, 2004 12:15 pm
You've obviously diagnosed your problem. There are drain tubes in all four corners but you can't get to the rear drain tubes without taking the headliner out. In any case, the rear ones don't usually clog because they are not exposed to the elements the way the front ones are when the sunroof is open.
Be careful when taking care of the blockage. In my car, the dealer used a piece of wire and ended up disconnecting the drain hose from the sunroof assembly. That made things worse. The water would drain directly on top of the headliner. The drain hoses CAN separate from the sunroof assembly.
In any case, in the mean time, before you get the clog taken care of, you can park the car at an incline (rear of the car lower than the front). This would make the water drain out of the rear drain hoses. The sunroof assembly water channels extend around the entire perimeter of the sunroof rail assembly so any water can exit out of any of the four corners if need be.