Is the "Engine Software Update" defective and causing problems?. - Hyundai Forums : Hyundai Forum
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post #1 of 61 (permalink) Old 03-22-2019, 08:26 AM Thread Starter
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Exclamation Is the "Engine Software Update" defective and causing problems?.

I have a 2014 GLS with 68K on it. I had the engine software update performed 2 weeks ago. Today, after coming off a highway, my engine started bogging when accelerating onto a local road. Engine light now flashing. Parked car at work and noted that it wont rev over 1800rpm. I called service and they indicate this is the software kicking in. I am taking it in for service, but wonder:

Is this update causing unnecessary problems due to false-alarms? Does the update protect Hyundai from significant financial loss while placing undue hardship on the owners (Defective or otherwise problematic detection software that results in multiple false-alarms)?
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post #2 of 61 (permalink) Old 03-22-2019, 09:08 AM
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No, it is not causing unnecessary problems.

It will detect a failing engine. It can also trigger if the knock sensor is failing or if its wiring harness is defective. So, if the update was applied correctly, then you need 1 or more of what I mentioned.

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post #3 of 61 (permalink) Old 03-22-2019, 11:30 AM
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The update is supposed to help prevent engine failure while driving and leave you with enough to limp to a safe place and maybe even back to dealer.
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post #4 of 61 (permalink) Old 03-25-2019, 11:25 AM
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I had the 953 Update done in January (2014 Sonata SE - 42K miles). I did not have issues for another month, when my car went into limp mode. Received a new wiring harness. It happened again a few weeks later (limp mode). Now, my car has been at the dealer for TWO weeks undergoing tests and waiting to hear back from Hyundai corporate on what to do next. They have finally gotten back to my dealer - I will be having a new knock sensor installed today/tomorrow. Sorry to say, I have zero faith it will hold. I will be crossing my fingers and praying the next 5K miles or so, and then maybe I'll start to feel more confident. At the same time, I guess I won't be TOO upset if I need a new engine. But there are days I have to drive 200 miles for work, and I have family out of state I had planned on visiting soon. So needless to say, I'm nervous.
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post #5 of 61 (permalink) Old 03-25-2019, 11:52 AM Thread Starter
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Thanks for replying. This is my fear/suspicion: Many people will be repeatedly inconvenienced by what amounts to being further burdened with defective software producing false alarms. This only adds to the aggravation and suffering of affected owners. If this turns out to be the case, I think the Judge should throw out the settlement and order Hyundai to immediately start replacing all "class" engines.
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post #6 of 61 (permalink) Old 03-25-2019, 01:02 PM
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Quote:
Originally Posted by trentko1234 View Post
Thanks for replying. This is my fear/suspicion: Many people will be repeatedly inconvenienced by what amounts to being further burdened with defective software producing false alarms. This only adds to the aggravation and suffering of affected owners. If this turns out to be the case, I think the Judge should throw out the settlement and order Hyundai to immediately start replacing all "class" engines.
Let us know how that works.

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post #7 of 61 (permalink) Old 03-25-2019, 02:14 PM Thread Starter
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I know its a bit of wishful thinking. Probably more productive to initiate another separate class action (then a judge might join the 2).
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post #8 of 61 (permalink) Old 03-25-2019, 02:47 PM
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Please let us know what the diagnosis was to your issue. Given that a car has millions lines of code through out and how well Hyundai tests stuff, anything is possible. I would be curious of the official diagnosis that if the code install was coincidental or not.

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post #9 of 61 (permalink) Old 03-25-2019, 08:48 PM
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I have a trip to Pittsburgh in July. They better get it straight before then.
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post #10 of 61 (permalink) Old 03-25-2019, 09:27 PM Thread Starter
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Originally Posted by Bearcats View Post
Please let us know what the diagnosis was to your issue. Given that a car has millions lines of code through out and how well Hyundai tests stuff, anything is possible. I would be curious of the official diagnosis that if the code install was coincidental or not.
Will do. So far - dropped car off 3/22/19. Was told by service Manager - 2 Scenarios: 1) Harness replacement - expect 7-10 days. 2) Engine replacement - expect around 6 weeks. I went back on 3/23 to retrieve some items and discussed further .... Here is where the wording gets interesting: "Hopefully, We'll hear back by Tuesday (3/26) how the company wants to proceed with your car". This "decision" process makes my imagination run wild....... I envision a large lottery-like machine with 100 balls inside. 99 balls have "Replace Harness" written on them and 1 ball has "Replace Engine" written on it........ I guess I'll just run with that theory until Hyundai details what this decision making process involves.
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