BMW SA Poor Motorplan service

Took my car to BMW for the gear light signal that was working intermittently. I was then told it is water damaged . This is what I expected because my friend had a similar experience for his X7 and they refused to cover it . My question is 1. Why is the liquid not affecting all other lights on the panel and there is no stickiness of the buttons. All lights are functional well 2. The electronic part that is water damaged is permanent. Why is this one on and off ? 3. How do you diagnose the liquid damage without opening the panel ?

I went to BMW dealership and these questions were not answered , BMW SA couldn’t answer these questions neither . I also requested to see the part , they then just printed on the margins that there was signs of liquid but the component was not opened for diagnostics .

I am very much disappointed with the BMW , I have been using the Mercedes Benz for 12 years and thought the Premium car from BMW is better (X6M) but I was wrong . What exactly is the reason for not covering this part under Motorplan

Stay away from this company