ProMaster Sunroof Failure: Stuck Blind & System Error

Having some experience with sunroof systems, I encountered a similar issue on my 2016 ProMaster Plus. The sunroof operation completely failed with the same error message and sunblind problems you describe. After checking fuses like you did, I took it to a workshop where they diagnosed it as a sunroof calibration problem. The control module needed recoding to restore proper functionality. The sunroof reset procedure fixed both the sunblind movement and initialization errors. Total cost was 75€ for the coding work. To provide more specific advice for your situation, could you share: Have you noticed any unusual noises before the failure? Does the sunroof make any attempts to move when operated? Has there been any recent work done on the vehicle electrical systems? Did the issue start suddenly or develop gradually? The sunroof mechanism in these models is generally reliable, but the calibration can get corrupted. Sometimes a simple reset procedure can resolve it, but proper diagnostic equipment is usually needed to properly reinitialize the sunroof control module.

Thanks for sharing those details. My vehicle has 67970 KM and had its last service 3 months ago. To answer your questions: The sunroof troubleshooting started when I heard grinding noises right before the complete failure. The sunroof makes no movement attempts now, completely dead. No recent electrical work done. The issue developed over about 2 days, starting with slow operation before complete failure. Based on your experience with a similar sunroof calibration issue, the cost seems reasonable. Given the grinding sound in my case, Im concerned there might be mechanical damage to the sunroof mechanism beyond just a reset requirement. Would you recommend still trying the calibration first, or should I expect a more extensive repair?

With those symptoms, especially the grinding noise, your sunroof system likely has mechanical issues beyond just calibration. While my ProMaster Plus had similar initialization errors, it never made grinding sounds before failing. The progression from slow operation to complete failure combined with grinding suggests worn components in the sunroof mechanism. Common wear points include: Drive cables, Motor gears, Guide rails, Lift arms A sunroof calibration alone probably wont resolve mechanical damage. Based on my repair experience, youre looking at a more comprehensive fix that might include: Sunroof motor replacement, Drive mechanism repairs, Full system recalibration after repairs The repair costs will likely exceed the 75€ I paid for just recoding. Motor replacement typically runs 300-450€ plus labor. If multiple components need replacement, costs can reach 600-800€. Given the mileage of your vehicle and the specific symptoms, I recommend having a thorough inspection of the sunroof mechanism rather than just attempting calibration first. This will prevent potentially causing more damage and ensure all worn components are identified and replaced properly.

Thanks everyone for the detailed feedback. After hearing about the potential mechanical issues beyond just calibration problems, I decided to take my vehicle to a certified workshop for a proper inspection of the automobile sunroof system. You were right, they found significant wear in the drive cables and motor gears, which explained the grinding noise. The total repair quote came to 750€, covering new parts, labor, and final sunroof calibration. While more expensive than just a reset procedure, addressing the mechanical problems now should prevent bigger issues later. For others who might encounter similar vehicle sunroof problems, those grinding noises before failure are definitely a red flag that points to mechanical wear rather than just initialization errors. Getting a proper diagnosis early can help avoid more extensive damage to the sunroof mechanism. Really appreciate all the guidance. Will get the repairs done next week and update the thread once completed if anyone else is interested in the final outcome.