Hyundai IONIQ Forum banner

Check Hybrid System on cold start

8.4K views 6 replies 6 participants last post by  aguila2099  
#1 · (Edited)
Hi folks,

2019 Ioniq Blue owner here. Before I start, I just want to say I "did my homework" and searched the forums first. I did find a few posts relevant to this issue but they were (1) all on the older side and (2) I think my situation is a bit unique. Therefore I decided to create my own post. Thanks in advance for your thoughtful help and patience.

The front end of my 2019 Ioniq Blue was run over by a UHaul truck in July of this year (see attached photo). It was a hit-and-run crime in which two other vehicles were also damaged! After months of back and forth with the insurance company and the collision repair shop, they decided to fix it instead of totaling the vehicle. I'll get into the relevant details now...

During the (months!) while the vehicle was getting repaired, the repair shop had to bring the Ioniq to a Hyundai dealer twice because they could not start the car. I was told by the repair shop that Hyundai ended up replacing the "Battery Management System Module" and it was covered under Hyundai warranty. I don't have any more detail about the Hyundai end of the repairs, because the collision repair shop didn't have any line items for this on their invoice. I will get more info from Hyundai in a few days but at the moment that's all I know about that. It's odd to me that an issue resulting from accident damage is covered by warranty but that's not my main concern now.

I finally picked up the repaired vehicle a few weeks ago. A couple of days later, the weather turned cold and I had difficulty starting the car. After several pushes of the button, the car did start but the "Check Hybrid System. Turn engine off" light came on. (see attached photo)

Since I had only picked up the repaired vehicle a few days prior, I first called the collision repair shop. They told me to call Hyundai because the issue is not related to their work. So I called Hyundai and they told me the following:
  • This light commonly comes on during cold weather. The dealership service department rep said "I've had several calls already today"
  • It's ok to drive the vehicle despite the light that specifically says "Turn off engine". BTW: I told them I'd need that in writing and indeed they sent me an email stating it's ok to drive.
  • They couldn't give me an appointment for several weeks. That appointment is next week.
So indeed, I drove the car with the light on. The light went off later in the morning when the weather warmed up. It was cold again today and we had the same issue.

If you've made it this far, thanks!

Like I said at the beginning, I did some "homework" and the other posts related to this issue mentioned software/firmware updates required to address this problem. I'll note, I'm the original owner of this 2019 vehicle and I NEVER had the issue prior to this recent repair. I've previously started and driven the car in colder weather without issue.

Given the circumstances, do you guys think a firmware update is what is needed? Possibly this Battery Management System Module" was installed by the dealer without updating to the latest firmware? Any suggestions on what I should say to the dealer service department when I visit next week? As mentioned, they wanted me to think it's a common issue and possibly they'll just try to tell me it's no big deal and nothing needs to be done.

Image


Image
 
#2 ·
You do anything to resolve the issue? I have a similar problem but not specific to weather that ive noticed. It mostly happens when im in stop and go traffic and the car changes between ev and regular and back to ev. During that change itll have some sort of hickup and the car feels like its stuck on a gear and jerks then warning signs pop up of random issues and sometimes the check ev will pop up but not always then itll go back to normal. I have a 2017 hyundai ioniq blue by the way and after taking it to the dealership i bought it from they said they fixed it and changed some wires and fixed a recall but even after several returns it will still happen. I took it to another hyundai dealership and they wanted to keep the car until the issue pops up again but i couldnt do that as i need my car. There wasnt a test they could do to make the stutter and warnings pop up so to them there was no issue with my car since i can still drive it and go weeks or months without a hickup. Not sure what to do besides get rid of this one as im over it by now. Feels like the ev disconnects when it happens
 
#3 · (Edited)
It mostly happens when im in stop and go traffic and the car changes between ev and regular and back to ev. During that change itll have some sort of hickup and the car feels like its stuck on a gear and jerks then warning signs pop up of random issues and sometimes the check ev will pop up but not always then itll go back to normal.
Given when it happens, I would be suspecting the hydraulic clutch that disconnects the gas engine from the drivetrain when it's running in EV mode. Every country seems to have different service intervals so it's ultimately best to consult your own Owner's Manual, but just for reference the Canadian one says to replace the clutch actuator fluid every 18 months or 36,000 km. Do you know if yours has ever been replaced? If not, I'd start with that, as you're at double that time interval now...
 
  • Like
Reactions: chunga68
#7 ·
My ioniq 2019 has 74 000 KM, the error happened just one time when I put the car with D then in Reverse, but it started again with no issues , just check engine I saw the code P1744 but then it disappeared, nothing stranged has happened after a week, dunno what to do, for this the electric oil pump how often its recommended to change