Not to sure about the passenger side seat pressure detect as my Karma doesn't even acknowledge that someone is sitting in the passenger seat without the seat belt engaged, no matter how much or little they weigh.:sMy Jaguar had a couple of sensors connected to the passenger seat and would automatically disable the passenger side airbag if there was someone or something in the seat that weighed less than a specific value (70 pounds, I think). Our M-Class Benz has the same feature and when our 19-pound Dachshund occupies that seat, the car dutifully turns off the airbag for his protection. Maybe the Karma has the same setup? Since the dog is not allowed in the Karma, I have never gotten any indication about the airbag.