|
Quote
from chimp101
Nope. Nope. Nope. 
:
We own a 2024 Hyundai Ioniq 5. Like most of the online users in the Facebook groups, we are experiencing significant unresolved issues with the ICCU and high voltage battery. Currently the car has been out of service for 90+ days with no ETA for return. Hyundai won't agree to pay for a rental car. The dealer won't give us a comparable loaner car. The car is cool, but the way it fails is terrifying. Basically there's a loud pop inside the car and suddenly you lose power at highway speeds and pray you can get off the road before you get hit by a truck. There is no pattern to it. It happened to us four different times. Hyundai has issued recalls for the ICCU part on the vehicle, but the recall is just replacing the ICCU part with the same part all over again. Some people have had their ICCU fail three times. If you don't believe me check the NHTSA complaints for the vehicle. Every day there are another 5 complaints. The Ioniq 5 gets complaints at a rate 15x higher than the Ford F150. When all of this happens to you (and it will happen if you buy this car) you will be stuck trying to deal with Hyundai's customer service. It's terrible. They take months to get back to you and refuse to help in meaningful ways. Any payments come with you signing something saying that you won't ever sue them and that the matter is fully resolved. Happy to answer any questions, but I would absolutely steer clear of this deal. EDIT: I didn't mention the high voltage battery issues. Apparently a bunch of those were defective too. The Ioniq Guy (on youtube) whose whole channel is talking about this car had two high voltage batteries fail (both his normal car and his loaner car from their media fleet) between December and January. Then, when the battery that was expedited due to him being an influencer was installed it was installed incorrectly and he had to go back two or three times to get it fixed right. The issue with the battery seems to be that in early 2025 they shipped defective car batteries from Hungary. Rather than proactively replacing them they are just waiting for them to fail. When they fail you have to wait 4-6 months for a replacement battery EDIT 2: If for some reason you choose to ignore what I am writing here and buy this vehicle please take a few minutes to review the lemon law in your state. lemon law claims on these vehicles are the one thing that Hyundai is forced to respond to. lots of people have lemoned these cars. keep in mind that your cash will be held up for months as they go through their process. |
Item 1 of 7
Item 1 of 7
frontpageBlubluthehusky posted Feb 8, 2026 4:20 AM
Top Comments
We own a 2024 Hyundai Ioniq 5. Like most of the online users in the Facebook groups, we are experiencing significant unresolved issues with the ICCU and high voltage battery. Currently the car has been out of service for 90+ days with no ETA for return. Hyundai won't agree to pay for a rental car. The dealer won't give us a comparable loaner car.
The car is cool, but the way it fails is terrifying. Basically there's a loud pop inside the car and suddenly you lose power at highway speeds and pray you can get off the road before you get hit by a truck. There is no pattern to it. It happened to us four different times.
Hyundai has issued recalls for the ICCU part on the vehicle, but the recall is just replacing the ICCU part with the same part all over again. Some people have had their ICCU fail three times. If you don't believe me check the NHTSA complaints for the vehicle. Every day there are another 5 complaints. The Ioniq 5 gets complaints at a rate 15x higher than the Ford F150.
When all of this happens to you (and it will happen if you buy this car) you will be stuck trying to deal with Hyundai's customer service. It's terrible. They take months to get back to you and refuse to help in meaningful ways. Any payments come with you signing something saying that you won't ever sue them and that the matter is fully resolved.
Happy to answer any questions, but I would absolutely steer clear of this deal.
EDIT: I didn't mention the high voltage battery issues. Apparently a bunch of those were defective too. The Ioniq Guy (on youtube) whose whole channel is talking about this car had two high voltage batteries fail (both his normal car and his loaner car from their media fleet) between December and January. Then, when the battery that was expedited due to him being an influencer was installed it was installed incorrectly and he had to go back two or three times to get it fixed right.
The issue with the battery seems to be that in early 2025 they shipped defective car batteries from Hungary. Rather than proactively replacing them they are just waiting for them to fail. When they fail you have to wait 4-6 months for a replacement battery
EDIT 2: If for some reason you choose to ignore what I am writing here and buy this vehicle please take a few minutes to review the lemon law in your state. lemon law claims on these vehicles are the one thing that Hyundai is forced to respond to. lots of people have lemoned these cars. keep in mind that your cash will be held up for months as they go through their process.
Exercise caution with these cars. The ICCU issues are still real. Consider these cars disposable and only buy if you are OK without having your car for extended periods and driving a random loaner like a Tucson while getting warranty work done.
Join The Conversation
Share your experience with the Slickdeals community
Share information with the community. Please follow our Community Guidelines and be kind!
214 Comments
Sign up for a Slickdeals account to remove this ad.
Bots or are people really that obtuse to knowing that if (any) product is first fundamentally subpar, the offered "discount" really holds little weight.
Our community has rated this post as helpful. If you agree, why not thank chimp101
The car ***could*** be so good. If Hyundai could actually fix the problems and support their customers.
Sign up for a Slickdeals account to remove this ad.
We own a 2024 Hyundai Ioniq 5. Like most of the online users in the Facebook groups, we are experiencing significant unresolved issues with the ICCU and high voltage battery. Currently the car has been out of service for 90+ days with no ETA for return. Hyundai won't agree to pay for a rental car. The dealer won't give us a comparable loaner car.
The car is cool, but the way it fails is terrifying. Basically there's a loud pop inside the car and suddenly you lose power at highway speeds and pray you can get off the road before you get hit by a truck. There is no pattern to it. It happened to us four different times.
Hyundai has issued recalls for the ICCU part on the vehicle, but the recall is just replacing the ICCU part with the same part all over again. Some people have had their ICCU fail three times. If you don't believe me check the NHTSA complaints for the vehicle. Every day there are another 5 complaints. The Ioniq 5 gets complaints at a rate 15x higher than the Ford F150.
When all of this happens to you (and it will happen if you buy this car) you will be stuck trying to deal with Hyundai's customer service. It's terrible. They take months to get back to you and refuse to help in meaningful ways. Any payments come with you signing something saying that you won't ever sue them and that the matter is fully resolved.
Happy to answer any questions, but I would absolutely steer clear of this deal.
EDIT: I didn't mention the high voltage battery issues. Apparently a bunch of those were defective too. The Ioniq Guy (on youtube) whose whole channel is talking about this car had two high voltage batteries fail (both his normal car and his loaner car from their media fleet) between December and January. Then, when the battery that was expedited due to him being an influencer was installed it was installed incorrectly and he had to go back two or three times to get it fixed right.
The issue with the battery seems to be that in early 2025 they shipped defective car batteries from Hungary. Rather than proactively replacing them they are just waiting for them to fail. When they fail you have to wait 4-6 months for a replacement battery
EDIT 2: If for some reason you choose to ignore what I am writing here and buy this vehicle please take a few minutes to review the lemon law in your state. lemon law claims on these vehicles are the one thing that Hyundai is forced to respond to. lots of people have lemoned these cars. keep in mind that your cash will be held up for months as they go through their process.
We own a 2024 Hyundai Ioniq 5. Like most of the online users in the Facebook groups, we are experiencing significant unresolved issues with the ICCU and high voltage battery. Currently the car has been out of service for 90+ days with no ETA for return. Hyundai won't agree to pay for a rental car. The dealer won't give us a comparable loaner car.
The car is cool, but the way it fails is terrifying. Basically there's a loud pop inside the car and suddenly you lose power at highway speeds and pray you can get off the road before you get hit by a truck. There is no pattern to it. It happened to us four different times.
Hyundai has issued recalls for the ICCU part on the vehicle, but the recall is just replacing the ICCU part with the same part all over again. Some people have had their ICCU fail three times. If you don't believe me check the NHTSA complaints for the vehicle. Every day there are another 5 complaints. The Ioniq 5 gets complaints at a rate 15x higher than the Ford F150.
When all of this happens to you (and it will happen if you buy this car) you will be stuck trying to deal with Hyundai's customer service. It's terrible. They take months to get back to you and refuse to help in meaningful ways. Any payments come with you signing something saying that you won't ever sue them and that the matter is fully resolved.
Happy to answer any questions, but I would absolutely steer clear of this deal.
EDIT: I didn't mention the high voltage battery issues. Apparently a bunch of those were defective too. The Ioniq Guy (on youtube) whose whole channel is talking about this car had two high voltage batteries fail (both his normal car and his loaner car from their media fleet) between December and January. Then, when the battery that was expedited due to him being an influencer was installed it was installed incorrectly and he had to go back two or three times to get it fixed right.
The issue with the battery seems to be that in early 2025 they shipped defective car batteries from Hungary. Rather than proactively replacing them they are just waiting for them to fail. When they fail you have to wait 4-6 months for a replacement battery
EDIT 2: If for some reason you choose to ignore what I am writing here and buy this vehicle please take a few minutes to review the lemon law in your state. lemon law claims on these vehicles are the one thing that Hyundai is forced to respond to. lots of people have lemoned these cars. keep in mind that your cash will be held up for months as they go through their process.
Our community has rated this post as helpful. If you agree, why not thank imdashiy
First with the positives: the car is very nice. Drives smoothly, very quiet, super fast acceleration (0-60 mph in sport mode around 4 seconds), overall very good tech (I do prefer Android Auto over the built-in Hyundai navigation, and the mobile MyHyundai app has had some bugs/issues every now and then). I've driven over 12K miles over the past year, both local and highways (a few roadtrips included), and currently averaging 3.4 miles per KWH in aggregate (from using mostly eco mode, but this goes down below 3.0 in winter easily on highways). Just the other day, I charged it from 20% to 86% at an Electrify America charging station in 19 minutes (with battery preconditioning).
However, over the past year, I've seen the "check electric vehicle system" warning pop up randomly about five times now. Each time this happened, I couldn't do anything about it while driving, but once I stopped, turned the car back on, the warning disappeared. This particular vehicle had no pending recalls when I acquired it, so theoretically should've had any outstanding ICCU-related issues fixed, but this just doesn't inspire confidence in me. Looking online, there are reports that this alert should be checked out immediately since it can lead to the ICCU fault, but since it just went away by itself (no indication of any issues from OBD2 scanner either), I'm not sure the Hyundai dealership can do anything about it too.
I can look past the little idiosyncrasies of the car with how the door handles function and don't consistently open when parked, how the side mirrors don't consistently close/open, how the app needs to keep reminding me that the doors are locked when I'm at home, or how the car keeps beeping at me when it thinks there's another object too close nearby (often false positives) or nags me to keep my hands on the steering wheel (when they already are). What I'm worried about is that "electric" warning coming back again someday and leading to a serious accident if the car shuts down, or the huge inconvenience if it leaves my family or me stranded somewhere (the better option I suppose). Because of this fear, I don't plan on buying any Hyundai or Kia with the e-GMP platform after this lease is over. Yes, it won't happen to most people, but the fact that there's a non-insignificant chance for a major disaster to happen is not worth in my opinion taking on this bet.
Sign up for a Slickdeals account to remove this ad.
Join The Conversation
Share your experience with the Slickdeals community
Share information with the community. Please follow our Community Guidelines and be kind!