How long unf how much laziness?

Hello, after last weekend with my 1.8 TDCI, (EZ: 25.06.04, 35tkm) the airbag warning people lit up and did not disappear by restarting, I was with the friendly today: A module of the control unit was allegedly defective and was exchanged. On demand the master told me that I could still expect 35% of the culant takeover of Ford with ‘the vehicle age and the mileage’ :-((( application is running. With the invoice amount I will also have to fight still well with 65% … Great! A month ago, the warranty expired and it’s off. Do you have any experience with the Kulanz handle at Ford? Can it be that the motivation of the workshop is not soo big, since I bought the car from another dealer? Thanks for all the answers!