I had my 2013 Accord (purchased from Crown Honda, Durham, NC) for 3 days when I noticed a whining noise coming from my 4 cylinder engine after parking the car in my garage. Took it to the dealer 3 times and it would not make the noise while parked at their place. Finally shot a video of the noise, which appeared to come from the area near the alternator, and took the video to the dealer for a tech to watch. The dealer tech had not seen this problem and called Honda Tech Line for help. The Tech Line told the dealer tech to install new computer software to disable a timed solenoid run cycle which periodically cycles for many minutes after the engine is shut off for about 10 minutes. The dealer tech told me that the solenoid is part of the variable valve timing (VVT) and that the solenoid was occasionally cycled to quote, clean it. I asked what happens to the solenoid if it is no longer "cleaned", and went to the Serv. Mgr. for an answer. His reply, not to worry, you have a 3 year warranty and if Honda instructs the dealer to make the software change, it must be ok. Bottom line, the car no longer whines after the engine is shut off, but I'm not happy with the solution. I don't think I'll be keeping this car very long.