For what it’s worth, the service center replaced the base unit. Time will tell if that solves the problem.
I have to say that I have not experienced the nightmare “customer service” that many complain about. It’s frustrating when the hardware malfunctions and I’ve had a couple of times where they messed up appointments and I arrived at a closed office. Overall the people at corporate and at the service centers have been courteous and supportive (both Guardian and Alcolock).
I have to wonder sometimes when I see others showing up for their monthly downloads with dozens of “fails.” If you are going to integrate the interlock into a drinking lifestyle then the problem may not be with the device. I’m still a raging alcoholic, but the device remains on the shelf until well past any boozing.