[matrix]

...My wife is pissed! She doesn't want to drive some POS loaner car. We paid for the Fisker 3 weeks ago and have gotten to use it for 6 days.

She told me tonight that if they can't fix the car quickly they need to buy it back. I think she's had enough of this adventure.

The car is cool and drives great. I can deal with software issues. But I can't deal with a car that leaves my wife stranded. That's not going to work. What if my kids were with her?

I agree with ffcars, having a brand new car (at any price) stranding your wife is very serious. If Fisker doesn't sort these issues soon, they should freeze all sales until they can deliver a functional and reliable car. I'm afraid if this continues, it will destroy the brand and doom the company. While most of us on this forum understand and "may" accept some early-adopter bugs/inconveniences, the large majority of buyers will not. Lemon laws, litigation, and bad press will result... and Fisker will be buying back a lot of cars. Rushing the car to market may cause more pain than gain for Fisker. I hope they have engineers working around the clock to resolve these many issues, because I really want them to succeed... but for the first time, I'm beginning to worry.

 

[matrix]

I'm not making light of @ffcar's wife's stranding. I'm just saying that so far, at least, it appears to be an isolated incident

Yes, I really, really hope it is just an isolated problem with one car. There's a big difference between convenience bugs vs. basic reliability, and the related safety implications.

...Waiting anxiously to learn more about the cause/resolution from ffcars.

 

[matrix]

...when you rush the commands in a "Race" condition, it is possible to interrupt some of those commands and knock requests and needed information out, causing longer delays, or modules not recieivng a wake up command or a state of health message, etc.

Why does the system allow you to interrupt initialization and proceed with startup before it's fully ready?

 

[matrix]

I was just stranded with essentially the same problem. Car engine never came on in stealth mode despite a full tank of gas and therefore battery ran all the way out and died on the freeway with 2 kids in the back. Did have PRND warning light that came on while driving earlier today but it didn't affect the driving and thought it may be a software problem that the dealer could fix next week. I already have the 6.14 upgrade so that clearly is not the answer....Oh well,

Strike 2. I was really hoping ffcars was an isolated incident. Hopefully no others will be stranded. [hr]

Anyway, it can be done, it just takes a lot of skull-sweat.[hr]

Okay, I guess I just don't understand the problem. If the PRND problem is occurring because of race conditions, the software should not allow the car to proceed into start mode until all components have successfully communicated they are "ready". I must be missing something.

 

[matrix]

Here's a classic example, from the old "dining philosophers problem": http://en.wikipedia.org/wiki/Dining_philosophers_problem (linking to wikipedia is a lot easier than me writing it up here!). Read the paragraph under "issues" that starts with "resource starvation".

If the system's mutexes have priority propagation, that helps avoid resource starvation, but you still have to get your priorities right.

Does this mean we need to be chauffeured by a waiter to eliminate the bugs?

Seriously, thanks CT for helping us understand this. :thumbup: I assumed there was some type of "conductor" managing everything, and it would only greenlight the startup if/when all is ready. Sounds much more complicated than that.

 

[matrix]

... the module behind (not physically) the Command Center is pretty well maxed out and is one of the bottlenecks. There is a lot of working going on to get every last bit of performance from it, or to find a suitable replacment.

@Nimisys & CT: Does this mean a solution to the bugs and slow responses may likely require changes to hardware, and that software changes alone may not be able to resolve the problems?

 

[matrix]

6.14.2 has software update for both rear inverter's as well as the HCU. the Inverters are actively cooled in the same low temp cooling system as the electric motors and contain 3 electric pumps and the two radiators in the diamond shape grill opennings. the temp sensors are internal to the inverters. The HCU controls the cooling system

Can you comment on whether 6.14.2 addresses the PRND-problem @Dutch, @ffcars, others are having?