2019 z4 Roof Leak

[Nigel01]

Hi
We have recently experienced the issue with water coming into the drivers side of the car because the bottom water drain outlet is blocked.
Can anybody help me on how I get to these from underneath the car to unblock them ? I am unsure if you have to remove the rear wheels etc.
Any help on this would be greatly appreciated
Thanks

 

[r2uzenblot]

I'm not sure but how old is the car?

 

[Nigel01]

The z4 is 2019

 

[ToddG]

If the drain is blocked, it is more likely at the top than the bottom. I'd check the top first.

 

[ToddG]

I just Googled "cleaning G29 water drain" and to my surprise, a YT video showed the bottom section was blocked with debris. It was an earlier model Z4, but it showed removal of a inner wheel arch panel to get to the end 'plug' which was full on gunk. I will be checking this.

 

[Nigel01]

So I have been looking at the leak today on the 2019 z4 bmw and hopefully I have found the problem,it looks like the bungs at the bottom of the roof drainage system were blocked .
I will upload the photos and would recommend if BMW do not include this cleaning of the bung as part of the service to have these checked out
See the photos