Its hard to say. Sometimes if the voltage is low, the 3 lights come on. To reset it, you would need to shut the motor off. Turn the X to on and rotate the wheel right to lock then left to lock then back to center. This resets the values in the sensor. Now if it came back on, then further notes are needed. Since they already replaced it, it's too late. It is odd that both the SAS and DSC mod go out at the same time, but anything is possible. It is already there, might as well give them the go unless your fingers are quick and can locate a DSC mod for cheaper.

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2011 E70 50i M Sport