2011 Sonata Hybrid Engine Shutdown
Has anyone experienced the engine shutting down while driving? I was on the freeway, and all of a sudden bells starting going off and the car showed on the dash that the battery wasn't charging. Thank gosh I had some electric power because that's all I was driving on. Once I got pulled over, I turned the car off to see if restarting would correct the problem and it wouldn't start. Any idea's what's up?
How long have you had the car?
Have any software updates been done?
Hyundai has issued several software upgrades for this car along with a valve replacement.
Technical service bulletins [AKA “TSBs”] TG2, TF9 with new NVLD (valve), and TF8 are all I am aware of.
I have heard about a few hybrids going into a “fail safe” mode but in each instance the car was restarted successfully. Take the TSB info with you to the dealer.
I've had the car since May 2011, it has 3,500 miles on it.
No updates have been done on the vehicle, that I know of. But I do have a value issue. The part's been back ordered for a couple of months, so hopefully that will be fixed as well. Where do I find the TSB information?
http://www.hyundai-forums.com/229-sonata-yf-hybrid/129573-check-charging-system.- - html
I also posted 3 videos on Youtube showing the failure here:
The defective part is called the HPCU (HYbrid Power Control Unit) and it's cost is roughly $5000 to replace and is becoming a widespread issue with the Sonata Hybrid.
That other forum has some good info but there is a definite over amplification of this and other issues on there. For example, engineers do not have to “fly in” to determine if an HPCU needs to be replaced. One of the highest volume Hyundai dealers in America has only done one HPCU swap at this point. Since you bought in May (where?), you could be a candidate for a swap and it is good that your dealer is up-to-speed on this issue.
Just take everything on that other forum with a grain of salt. "Unlock" your email addy and I’ll explain what’s going on there via email. The TSB #s were in an earlier post.
For some perspective, the first Highlander Hybrids began having inverter - controller issues with the inverters actually exploding in the engine bays. Initially, Toyota tried to duck the responsibility for the $9 to $12K expense for out-of-warranty owners but now there is a recall of tens of thousands of these SUVs including the Lexus 400h.
The dealership, Tustin Hyundai, has been great. The car started right away in the morning when they arrived, but once I told them what happened they knew right away what it was. I spoke with them this morning and supposedly Engineering was in yesterday to see the vehicle. According to the service department this was the second vehicle to come to their shop with this issue.
Can you tell me how to unlock the email addy. Or you can email me at [email protected]
I otherwise like the car and wish to keep it, but not if it endangers my family and I, and the bottom line is that our safety is NOT an over amplification of any sort.
They allow things to be posted there that other forums will not.
Virtually no moderation.
Owners with problems seem to flock to it.
Most forums caution about multiple identities (user name or accounts).
Having said that it is not difficult for one person to open multiple Google or whatever, email accounts.
Armed with different e addys, a smart phone (or tablet) with wi-fi, a home computer, and a work computer, one person can easily assume 3 profiles undetected because all the IP addresses will be totally different.
That is why so many sites have turned to Facebook to log readers’ comments, or like Edmunds, provide proper, unbiased moderation.
Some of that duplicity is definitely going on over on that forum.
There is a lot of good info there that we can share with owners of the Hybrid on this board.
Go to the search complaints tab and click on "type of search" and put all the information as it pertains to the Sonata and you can look up individaul problems poeple have had. For example if you click on Hybrid Propulsion System: inverter, you will see 2 complaints, then search electrical system and you will see it has numerous complaints. The ones with the VIN #'s that begin with the letters "KMHEC" pertain to the Hybrid.
Hope this helps, and don't forget to report it while you are there.
The more people that file a complaint, the better our chances are of making Hyundai move quicker on this dangerous defect.
And make sure you start another discussion on a forum so you can whine about it.
I helped set up and moderate forums and trust me, there are some devious folks trolling some venues. And some of the comments the mods have made on the other forum were totally inappropriate.
A discussion was even started about the redundancy - 8 open threads on the same topic - and lack of moderation.
The bottom line is I am not starting duplicate threads on the charging system shutdown, using duplicate identities to report the issue, or what you consider "whining" about it. I am just making individuals aware that there is a serious issue when it comes to the shutdown and it needs to be reported when it occurs.
It appears that so far all of the cars with this problem were built in Feb; care to comment on when your's build date was?
Also, VinnyG is responding to someone else talking about the same problem and trying to help out... He didn't even start the thread. Why are you giving him a hard time? While not a widespread problem, I wouldn't criticize anyone for helping out someone else that's experiencing the same problem they did and have spent more than a month trying to get fixed. I think that's part of the reason these forums exist....
In response to your question when my car was built, I don't know. Can you tell me how I would find out?
I hope this helps guide you Mary and any others that may come here looking for advice. I will keep you posted if you wish, Vinny.
That just doesn’t seem like something to be calling “deadly and dangerous.“
Exact same thing happened to my wife.
She kept driving the car for about a mile, too.
However, we didn’t immediately rush to file a complaint, then become a cheerleader urging others over and over to file with NHTSA before we tried contacting Hyundai.
You say your hybrid experienced a ‘loss of power;’ any video of that?
Was Hyundai able to duplicate that issue?
I will be still carrying the video camera in the car when I get it back just in case it happens again, but my dealer feels it is properly repaired now.
Sorry if you feel I am a "cheerleader", but if your wife or child experienced the immediate shutdown on a busy expressway, you would understand my passion in having this repaired not only for me, but for every one else that has had this happen to them. You seem to be an intelligent, well written individual, but I can't understand why you don't get it that it is a serious issue that needs attention. I said before that I otherwise love the car and wish to keep it, but not if it proves to be unsafe. It is my fourth Hyundai, the first being an '86 Excel, and I have been a steadfast Hyundai advocate since then.
My service sheet states "P0A0D High voltage system interlock circuit. Spoke with Hyundai had field engineer come out and look at vehicle. Update hybrid power control unit with updated software. Road test 40 miles vehicle operating as designed."
My advisor said the Northeast engineer who came out really knew what he was doing and he was impressed by his knowledge.
I must say this; I reset the MPG meter at the dealer before I left for the ride home which is only about 16 miles or so away, and when I got home, it said I averaged 45.8 MPG. It seems to be running like new, and I didn't notice that "first start up" jerkiness either. I don't want to jinx myself, but it seems to be running like new again, no jerkiness, and mileage is great again. I hope it stays just like this for the remainder of my ownership, but I must remember that I only did a few miles on it since the repair. (I will still carry that video camera in the glove box just in case.)
I'll keep you all updated on the progress.
Take care, Vinny.
Fingers crossed . . . . . .
Good luck, Vinny.
As krypto said, "Hyundai must be getting close to correctly diagnosing the CEL and power loss issues and developing remedies for both.
Fingers crossed . . . . . ."
We are waiting on some parts that are updates. I have copied the posts here and plan to show them to the dealer.
The service campiagns will take care of the shutdown issue, and they will also replace the high voltage connectors as well.
If there is any confusion at your dealership, I suggest you go on the Hyundai-Forums.com site and P.M. Car Tech Dude. He is responsible for the development of the repair campaigns and he will personally contact your dealer and tell them exactly what to do to repair this for you. He is a good guy who will get this taken care of for you.
Here is a link to one of the threads regarding the same issue you are experiencing, and you can contact him through it: