I have a Z4 that's had some problems. Which I've been arguing with BMW about fixing since I bought the car (it started as lifters, and a few things came to light as the car got dug into). In the ten months of having a case advisor at BMW NA I haven't once been able to get them on the phone. The short version: A rear impact sensor (the BST unit) had to be replaced. I have had BMW Assist since I bought the car. After talking to them about their protocols in the event of a crash they said they would call the car in the event of airbag deployment or the BST unit being broken. When the BST was replaced by BMW SF (not where I bought the car) they demanded that I take the unit and in their words 'have it out' with the dealer where I bought the car - the unit had been 'reassembled' with a pair of pliers so it would kind of work - there are little break away tongs in the unit that makes the battery disconnect in the event of a crash, and it had been 'mushed' back into place - there's also a fuse that had failed. I think when codes for the car were cleared, the evidence went away; either at CPO or at the dealer. Eventually the unit just fell apart. The dealer I bought the car from was -to say the least- unresponsive. BMW Assist filed a formal complaint with BMW about this. I asked for a papertrail, which I'm still obtaining. I asked for reimbursement for the BST from the case agent at corporate (maybe someone slightly higher up than the dealer contract sorters?). Weirdly enough in the middle of this I was also told I was the third, not the second(!?!) owner of the car by the case manager. When asked about this they refused to answer. They refused to pay for the BST. This bothers me: either Assist should have called me, if the unit had broken on a pothole or something under my ownership, thinking there was an accident, the only other option is the unit was broken on receipt of the car. Which means my wife and I had been driving around with a safety unit broken. So I have to wonder: do the airbags work? Are the roll hoops bent or fatigued? I asked whether that meant the car was safe, or if they were saying I had broken the unit, and they literally responded with 'the case file was closed'. I would like to alert corporate of this shoddy treatment and of the outright negligence - not to mention the friction it has caused for corporate with Assist - but so far any contact has been routed back to this person, whom I think is trying to sweep it under the rug. The question: Anyone actually called or written corporate? I really expect nothing to come of it, but I really am in this area of negligence. I am in the process of actually getting a lawyer, which is something I have never said before, but it's really not about the money or time to have bits fixed, but the lack of care for safety - and everyone I've talked to outside of the case manager, Elaine Young, seems to take this seriously.