Last year in May I bought my S-Cross 1.4 as a used car. A few days later one of the two FBs no longer works. I drove to the Suzuki dealer of my trust (I didn’t buy the car from him) and he renewed the batteries immediately in both FB. Now 19 months later is another FB without function and the second one sometimes has dropouts. The FB without function is the same as last year and it is usually in the drawer at home and is used little. Is that normal or not?