[JOE YOUNG]

Hi there

Any one had this issue where a water leak is coming from the Panoramic roof Control Panel and also running down from the A pillar to the floor.
Floor mat is soaking wet.
Had the car from new, 22 model and probably only opened the pan roof a handful of times.
I haven't thoroughly looked around the Pan roof as I just found out last night and its pissing rain still.

I have already booked the car as its under warranty.

Just want to know what could be the cause.

Thanks much

[avi66]

Originally Posted by JOE YOUNG

Hi there

Any one had this issue where a water leak is coming from the Panoramic roof Control Panel and also running down from the A pillar to the floor.
Floor mat is soaking wet.
Had the car from new, 22 model and probably only opened the pan roof a handful of times.
I haven't thoroughly looked around the Pan roof as I just found out last night and its pissing rain still.

I have already booked the car as its under warranty.

Just want to know what could be the cause.

Thanks much

Possibly blocked sunroof drain.

There is one drain tube at each corner, and if they become blocked, water builds up in the pano roof tray and overflows, resulting in what you’re experiencing. The front drains are visible when the front doors are open and can be found below the door tension link.

[BMWbiker]

Originally Posted by avi66

Possibly blocked sunroof drain.

There is one drain tube at each corner, and if they become blocked, water builds up in the pano roof tray and overflows, resulting in what you’re experiencing. The front drains are visible when the front doors are open and can be found below the door tension link.

I had this happen with a previous non-BMW car. The dealer unblocked the drains and all was well.

[avi66]

Originally Posted by BMWbiker

I had this happen with a previous non-BMW car. The dealer unblocked the drains and all was well.

It’s a poor design, especially as the pano roof seals shrink and allow more water through. Just needs some organic growth or a build of detritus, and you end up with a fish tank.

Also needs care clearing the drain tubes as it’s possible to disconnect them from the roof tray and they have a small diameter.

[BMWbiker]

[QUOTE=avi66;31026157]It’s a poor design, especially as the pano roof seals shrink and allow more water through. Just needs some organic growth or a build of detritus, and you end up with a fish tank.

Also needs care clearing the drain tubes as it’s possible to discount them the roof tray and they have a small diameter.


Is this something that is done at the 10K service? Or should I request it? Or is it easy to DIY?

[avi66]

[QUOTE=BMWbiker;31026197]

Originally Posted by avi66

It’s a poor design, especially as the pano roof seals shrink and allow more water through. Just needs some organic growth or a build of detritus, and you end up with a fish tank.

Also needs care clearing the drain tubes as it’s possible to discount them the roof tray and they have a small diameter.


Is this something that is done at the 10K service? Or should I request it? Or is it easy to DIY?

Afaik it’s not done on any BMW service. It’s usually down to the owner to improvise a cleaning device, such as the thick nylon cord used by garden string trimmer etc. Hence my comment about being careful.

[BMWbiker]

Originally Posted by avi66

Afaik it’s not done on any BMW service. It’s usually down to the owner to improvise a cleaning device, such as the thick nylon cord used by garden string trimmer etc. Hence my comment about being careful.

Thanks for the info. I got to thinking about it, after washing flower buds from a tree off of my car yesterday.

[JOE YOUNG]

Originally Posted by avi66

Possibly blocked sunroof drain.

There is one drain tube at each corner, and if they become blocked, water builds up in the pano roof tray and overflows, resulting in what you’re experiencing. The front drains are visible when the front doors are open and can be found below the door tension link.

Thanks for the reply.
Funny thing is, I probably only opened it twice in 2 years, which is why Im wondering how could it be blocked. Does the drain share drainage with the windscreen drain as well?

But would check tomorrow when its not raining.

[ContactPatch]

Amazon has this tool and many more like it for less than $10...

https://www.amazon.com/Brush-sunroof.../dp/B09SWSVZ8Z

...if you don't want to use .065 string trimmer line. Handy tool to have for this particular car.

[Plusforce]

Is there any way to clean the two drain pipes on the back? I only could find the front ones.

[peeezy]

Originally Posted by Plusforce

Is there any way to clean the two drain pipes on the back? I only could find the front ones.

open ur sunroof all the way back. you will them see it then.

[avi66]

Originally Posted by JOE YOUNG

Thanks for the reply.
Funny thing is, I probably only opened it twice in 2 years, which is why Im wondering how could it be blocked. Does the drain share drainage with the windscreen drain as well?

But would check tomorrow when its not raining.

The drains are sunroof only, but water can get past the seal pretty much around the entire perimeter, even with the roof closed. It’s a bit like a door seal that attaches to the glass side, but just presses on the out edge of the roof.

Problem is it’s constantly exposed to UV and environmental containments, which cause it to shrink. Water can then build up even without opening the roof, resulting in organic sludge forming that can block the drain.

[avi66]

Here's why you need to be careful not to damage the front sunroof drain !

[rob175]

From the video, the rear drain looks to be a total PITA to clean. I would think that IF you can get under the car it would be easier to clean out the drain from the outside instead of taking so much of the interior out.

I assume the drain is visible from under the car since the water must drip onto the pavement.

[Plusforce]

Originally Posted by rob175

From the video, the rear drain looks to be a total PITA to clean. I would think that IF you can get under the car it would be easier to clean out the drain from the outside instead of taking so much of the interior out.

I assume the drain is visible from under the car since the water must drip onto the pavement.

100% agree!