A known problem on our famous panoramic sunroofs is that the vents and even the drainage pipes get blocked by dirt (clumps of leaves, dust, sand, etc.).
Let’s see how we can unclog this before the car turns into a swimming pool 🏊‍ 🏊‍ .

🔧 Tool 🔧

a bicycle brake cable ( or meter ) about 2 meters long.
🛑 ATTENTION NO SHARP END 🛑

or

Torx T25 screwdriver.

⌚ Time approx. 30 / 45 min.

How?

First, let’s take a look at where the vents are located in the vehicle. It’s not very complicated: they’re located at the 4 corners of the sunroof:

The 2 front vents can be accessed by opening the panoramic sunroof.
The 2 rear vents can be accessed by removing the rear window of the sunroof.

1 – Opening the panoramic sunroof in the maintenance position

You need to open the sunroof to its extreme position:
Let me explain: when the sunroof reaches its maximum open position, keep turning the rotary knob, and you’ll see that the roof opens even more, giving you access to the 2 screws in the photo below.

2- Removing the rear window of the panoramic sunroof.

Remove the 2 screws (one on each side), paying attention to the washer underneath.

Then stand on the rear seat to remove the screws hidden behind the gasket (2 on each side). Don’t hesitate to use your hand to lower the gasket so you can get the screwdriver through.

3 – Unblock the sunroof drain pipes.

Then you have access to the 4 drain holes. All that’s left is to use the brake cable to unblock the drain pipes.

4 – Check sunroof vents.

Pour water into the sunroof “gutter”.
Water should flow through the sunroof drainpipes and onto the ground through the wheel arches.

5 – Reassembly.

Reassemble in reverse order.
You have unblocked the panoramic sunroof drain pipes.

If you need help, I’ve put together several tutorials:
– Greasing the panoramic sunroof.
– Changing the panoramic sunroof blind/curtain.
– Removing the air deflector (for net maintenance, for example).
– Resetting the panoramic sunroof and blind motors.

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