Yesterday I tried pouring water into the driver's side sunroof drain, & it quickly dripped out onto the ground behind the front wheel. Did the same thing at the passenger side, & it did not drain. I can poke a wire at least a few inches into the top of the sunroof drain opening, so it doesn't seem to be clogged at the sunroof, but I don't know where the drain hose is routed to look for a clog further downstream.
I assumed the passenger sunroof drain hose would be behind the passenger A-pillar trim, but all I found there was a tube that feeds the tailgate washer nozzle.
While installing a new cabin air filter I removed what appears to be the AC drain hose, & could easily blow air through it, so that doesn't seem to be part of this problem.
If anyone has successfully cleared a passenger-side sunroof drain on a P2 V70R, I would be very grateful for their advice . . . TIA.
Edited by geoguy, 12 April 2010 - 04:07 PM.