Air Bag On-off Switch problems of the 2015 Subaru Crosstrek

I spilled 3-4 ounces of coffee on my front passenger seat. A short time later, the srs airbag warning light appeared on the dash and my passenger seat would no longer recognize that a passenger was seated in the passenger seat (passenger airbag off light would not switch to on when a passenger was seated). I called my local Subaru dealership and I was told that the passenger sensor in the passenger seat was very sensitive and that moisture could interfere with it and disable the passenger airbag until the sensor dries. Apparently this happens frequently. This seems extremely dangerous in any car, but especially a Subaru which is marketed as an "outdoors" or "adventure" car where wet people/dogs/equipment could regularly be in the front passenger seat. The vehicle was running and stationary when the warning light appeared on my dash.