Dealer/Indy should be to easily figure out what part of the system is bad. I would recommend against using the resistor trick. If you ever sell the car, you'll find yourself liable if you don't return it to stock. My X came with 2 resistor tricks from some dickwad repair shop. If I would have gotten t-boned, the wife wouldn't have some airbags. BMW dealership accidentally came across one of them when they were looking at something else....and then decided to check the whole car.

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2005 x5 4.4i sport