Hello together, In February 2024 the Valvetronic system was repaired in my N55. After a week I had to go to the workshop again due to misignition, and I got the car fixed in mid-April with everything. The invoice date is February. Today my Valvetronic system does not work again (the same symptoms and error codes as 2024, only 3000 km driven!). Should the workshop repair the Valvetronic system again without calculating anything, since it is still within the warranty period?