I think warranty claim is a business decision. I have had experience that one dealer are unwilling to do recall/warranty and my symptoms of my other car is not showing up fully and the other dealer did it without hesitation.
I had a warranty claim with BMW... I stuffed up the electric window after Andrew did something on my car. Totally my fault you see. I went to BMW to get it readjusted (because it is closer Andrew) without charge
. Well it cost them 10 mins of labour? hehe.