OK, lots of problem reports. But without solid data on how many DUs in the field are operating in spec, it's hard to put context on these numbers. I'm on my second DU, which seems to be doing a lot better for a lot longer than my first one. I have a 2013 P85+ built in July, delivered in August, with DU replaced about in June, 2014 due to slightly louder noise during operation. The actual reason that led me into a service visit in June, 2014 was my right front passenger door handle jammed and needed to be fixed. I mentioned the DU noise NOT to request a replacement but because I wanted them to assure me that the louder DU operation was fine -- no one else in my life noticed the increased volume and I wasn't bothered by it, only curious. The SC staff just said, hey, it's out of spec, we're replacing it, end of story.
So 10 months on the first DU, 17 months on the second (which still sounds fine). The replacement DU was remanufactured, not new. Is this a story evidencing DU problems (first one needed to be replaced)? Is it a story evidencing deployment of DUs that are more solid (second one has lasted 17 months now)?
Heck, from these anecdotes, I can't even make a broad-brush assertion about the trend line on DU problems. Up? Down? Sideways?
I don't know how to turn these reports into solid projections of pretty much anything other than... well... the issue is real.
Does anyone have better data?
Alan