What are these tubes?

[Volgrrr]

While replacing the tailgate gas struts on my '95 T5 wagon, I noticed a clear tube in the body cavity behind the tail lights on each side.

These tubes are about 12mm diameter and come from the roof area heading toward the ground.

Common sense tells me they are drain tubes, but I can't fathom out what they might be draining.

My wagon has a sunroof with drain holes at either side of the front of the sunroof frame, but surely the frame wouldn't have tubes running all the way through to the back of the wagon - or would it???

I'm stumped, any ideas out there???

[jabber]

So here is an idea... Pour some dyed water through the sunroof drain holes and see where it comes out. On my S70 there are drain holes for the trunk but they are located off the left where the antenna drain holes are.


Jabber 1999 S70.

[DVolvoguy777]

Those are sunroof drains. From the back of the sunroof.

[Volgrrr]

Thanks for your response.

I might park the wagon with its nose uphill and pour some clear water along the sunroof insert.

I'm reluctant to use a dye because once the water disappears into the sunroof frame I would have absolutely no control over where it came out. I'd hate to think I might give the headlining a bit of a blue rinse.

I'll buy a telescopic mirror (can't find the one I know is in the garage) and, with the roof open, get some torchlight in above the headlining to try and see just where the sunroof frame finishes and where these rear drain tubes connect.

The wagon roof line is fairly long so, either the tubes are very long or the sunroof frame is very long - one of the two.

Regards
Volgrrr

[Volgrrr]

Since posting this particular query I've purchased a VADIS disc.

This disc has clear diagrams of the sunroof layout and yep, there they are as large as life, a drain hole on either side at the rear end of the sunroof frame.

The tubes that had me completely mystified are the rear drain tubes.

At least one of my problems is now solved.