[3002 tii]

i had the same problem as you, happened when i gave someone a lift and she spilled iced coffee in the car. liquid had gotten into the area where the bmw assist button is. even though i did my best of wiping up asap, drying it out, etc... shortly afterwards, while driving the car would dial up bmw assist on its own. everytime it happened i kept telling them i hadn't pressed the button. this issue persisted for days so i finally went to the dealer.

dealer found "brown liquid" inside, and thus i paid for the repair. at the time, they warned that the air bag module might also need to be replaced since they are located in the same area but i opted against it seeing how i didn't get any airbag warning lights. the fix was basically to replace the bmw assist module or whatever electronics hardware was located in that spot. if u spilled anything but want it repaired for free, i suggest you opening up and wiping down any evidence.