Is your panoramic sunroof blocked? The Diagnostic Toolkit will be an invaluable tool in your troubleshooting, but you can already check for mechanical faults and try a few manipulations.

There are several avenues to explore:

1. The lost engine
2. Motor out of order
3. Broken motor output pinion
4. Broken cables

We’ll see about that right after the emergency solution.

The emergency solution: manual operation

Before looking for the cause of the problem, you should know that the motor can be operated manually by removing the control block to gain access to the motor. To do this, remove this small piece, which gives access to the control unit fixing screws.

Then unscrew the two screws securing the control block, and you’ll have access to the mechanical control directly on the sunroof motor, using a hexagonal bit.

Now we’ll look at the solutions or possible solutions available to us.

1 The lost engine

When the motor is lost, actuating the control causes movements that don’t correspond with the requested command, or worse, don’t respond at all.

This is when a reset is needed, as explained by following the procedure I wrote on >this article<.

Sometimes the motor also goes into safety mode to protect itself.
It’s possible that a reset will also solve the problem.

2 Motor out of order

When the motor is out of order and no longer responds to any commands, it is useful to have a Diagnostic Case to see the fault.

In this case, replacement of the motor is necessary unless you are a specialist and you repair the motor.

3 Broken motor output pinion

When you hear the motor running in a vacuum, but no movement occurs, the cause may be a broken motor output gear.

To access the motor, you need to remove the headliner, or at least lower it to gain access to the sunroof motor, which is located at the front. The awning motor is located at the rear and also requires the headliner to be removed.

Then remove the motor’s fixing screws and pull it downwards.

The dealership doesn’t list the pinion gear in detail, and charges around €500 for the motor.

You can find the pinion gear alone on the internet via marketplaces or via my website.

4 Broken actuating cable(s)

When a cable is broken, the symptoms are total blockage without motor noise in the vacuum and absence of movement.
Sometimes there is a total blockage without the motor also working.

Replacement of the actuating cable is mandatory in this case.

Of course it is possible that other causes and solutions are available to you if your panoramic sunroof is blocked.

Feel free to write us your solutions and send your remarks to the following address: velum.auto.store@gmail.com

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