Thread: Sunroof drain tubes

Dunno about the Disco, but on the P38A, I slid a length of electrical building wire up from below. It's stiff but flexible.

Many times on many Discovery forum sites I've seen people asking "where does the sunroof drain pipe end and empty from?" and never seen a clear answer. Well, in solving my A-pillar flooding problem I have now found out, at least for my 2004 td5 Disco. The front sunroof drain pipe runs down the inside of the A-pillar and empties into the bottom end of the A-pillar, emptying through the A-pillar drain hole. The plastic pipe does not show itself out of the A-pillar. To get a hold of the bottom end of the drain pipe on mine requires removal of the passenger side footwell kickpanel, removal of the grommit for the door wires that pass through the A-pillar and then fishing the tube out with a bent wire. Good luck.

If the drain hole is blocked by external mud like mine was (it's at the back of the A-pillar above a mud catching ledge , not at the front like earlier models) then the A-pillar fills up with water, that runs out unseen through the wiring harness hole behind the kick-panel and soaks the carpet and underfoam.

Bugger, so my leak is on driver side footwell so won’t be sunroof drain pipe then.

Originally Posted by RobMichelle

Bugger, so my leak is on driver side footwell so won’t be sunroof drain pipe then.

This sounds like you might have a very tiny leak from the front windscreen that even won't show when you are driving in the rain (by some reasons) but ONLY leaks when you park the car under the rain.

How is your heater?
Don't know about your vehicle, but on our D1 the heater sprang a leak and dumped green coolant in the driver's footwell out the back of nowhere. We cut off the coolant supply and ran without a heater.
Another possibility is the overflow drain for the aircon being blocked.
Good luck.

Originally Posted by Bohica

Many times on many Discovery forum sites I've seen people asking "where does the sunroof drain pipe end and empty from?" and never seen a clear answer. Well, in solving my A-pillar flooding problem I have now found out, at least for my 2004 td5 Disco. The front sunroof drain pipe runs down the inside of the A-pillar and empties into the bottom end of the A-pillar, emptying through the A-pillar drain hole. The plastic pipe does not show itself out of the A-pillar. To get a hold of the bottom end of the drain pipe on mine requires removal of the passenger side footwell kickpanel, removal of the grommit for the door wires that pass through the A-pillar and then fishing the tube out with a bent wire. Good luck.

If the drain hole is blocked by external mud like mine was (it's at the back of the A-pillar above a mud catching ledge , not at the front like earlier models) then the A-pillar fills up with water, that runs out unseen through the wiring harness hole behind the kick-panel and soaks the carpet and underfoam.

Well Done Player One!!

and now for the $MILLION DOLLAR$ question!


Where do the drains for the REAR sunroofs go?

You have 60 seconds........





I think I''ll just run some water into the sunroof and see if any hits the ground,,
somewhere behind the front wheel,, yes?

Oooh waiting with anticipation for this answer

Originally Posted by Pedro_The_Swift

Well Done Player One!!

and now for the $MILLION DOLLAR$ question!


Where do the drains for the REAR sunroofs go?

You have 60 seconds........





I think I''ll just run some water into the sunroof and see if any hits the ground,,
somewhere behind the front wheel,, yes?

Look behind the rear lights apparently, a thicker tube than the axle breather.