Let's be carefull out there
Join Date: Jan 2006
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Welcome to the forums. If it is leakage from the sunroof it can run down either the front pillars or down the seatbelt guides (see if seatbelt is wet). Other causes are the arial (remove and reseal with silicone), or the rear light clusters or as noel says the air intake.
ps. no need to remove the drainpipes, just blow through from above or rod them with a flexible net curtain wire.
Currently in chris m's garage:
2000 Scenic 2.0 16v Monaco, BMW 3 Series, Pug 206