I think that many of the customer relation issues that people have had were with their retail dealers who are not experienced with the brand or technology. Perhaps Zero needs to improve their dealer training, service education and customer service followup at the dealer level. So far, my Zero has been a lot more reliable than any of the 7 BMW motorcycles that I have owned during the past 25 years. However, I will admit that BMW dealers all provide excellent customer service and most provide loaners if your bike needs servicing.
I agree with Richard230. To me, it seems ludicrous to imagine resolving similar problems in the same way with a gas bike - for example, contacting Honda or BMW directly to resolve a faulty throttle body or intermittent stalls. Like other manufacturers, Zero's first line of customer service should be local service centers. But the quality of service from dealers or service centers seems to vary wildly, and some customers seem to be ignored.
* Some dealerships are really going the extra mile for their customers, and I hope they are rewarded for doing so.
* Some dealerships are held up by troubles on Zero's end. Logistics will never perfect, but from anecdotes there appear to be numerous supply problems.
* Some dealerships have issues with lack of adequate training. This is not helped by significant redesigns to the battery and motor/controller combination in 2012 and 2013. Net result however is that lack of training pushes service issues back to Zero, and I think they are understaffed to deal with service issues in a timely fashion.
* Some dealerships honestly don't seem to care about supporting the bikes. Perhaps this makes financial sense - a dealer that has sold few bikes may see little reason to support them. But the end result is a negative customer experience, and Zero needs to reform or cull these dealers.
I've probably hit every serious service issue on the 2012 bikes. 2 rounds of the controller glitch, faulty weatherproofing on the BMS board, faulty cells. In 20 months of ownership, the bike has been completely unavailable for about 5 months, and operating in a degraded state for 7 months. Ultimately I would say that I'm disappointed with the bike's demonstrated reliability, but Zero has gone above and beyond my expectations for their warranty service, especially as I am so far away.
Collecting unresolved service issues in one place is a good idea. Squeaky wheel, etc. ZeroLover: I've PMed you contact information for the director of aftersales support at Zero. Start by escalating it within the company, if you have not done so already.