I read almost each information (article) related to HardTop systems on ISTA, It does not say as Roof Package Lowered Sensor' but it says
Hall Effect Sensor "Roof Package Stored" right and left, when they describe the Hall sensors and micro switches on Opened/Closed position guide.
And the place for this sensor is located on the right and left base plate in the luggage compartment.
Decription of the sensor is delivers a signal to the CTM when guide bolt of the front shell has reached the guide in the base plate. As of this position, the drive for hardtop locking can be activated and the rear module closed again.
Pictures related to this issue.
And Failure code is 00A6A1 and one of the symptom of this code is stored as
l01209 Drive Unit for Hardtop Lock Faulty. I do not know why it does not give the direct code for the LEFT SIDE ROOF STORED SENSOR with the component code of
l01204,l01590 instead of that, giving error as locking failure!
If the Roof package stored hall sensor is recognizing the Right side and does not recognize the left side, locking will not be activated. So it is most likely the issue here. I can see a very little picture of this sensor and it is really hard to tell where exactly it is! And the funny part is Left side is not pictured and it says on the description as Left side not shown (You can see on the 2nd picture)