Smidge204 wrote:Also, the electric parking brake should have more than enough schlitz to stop the car, especially if you pull it twice to "double engage" it. The capacitor has nothing to do with the parking brake AFAIK. It's there to maintain the ABS and hydraulic boost systems.
O.K. Agreed that it looks like the ultracapacitor does not provide backup power to the parking brake. IMO, this is a major defect in the system design since loss of 12V power means loss of the parking (emergency) brake. Perhaps this is one reason they chose to move back to a mechanical brake in 2013. It IS mechanical for 2013, is it not?
In this case, maybe the issue was simply that the emergency brake was too slow to provide help in stopping the car in time. OTOH, it appears there were serious problems going on, so perhaps power was lost to the emergency brake system.
69800 wrote:Now that we are aware that it can happen we should all be ready to push the park button in an emergency like this.
Yes, I was starting to think about what to do in this case and shifting to park came to mind. Does anyone know the maximum speed at which the parking pawl will move into the locked position?