2023 Ioniq 5 SEL RWD Experiencing "Power Limited" Turtle when Driven for 55+ Miles at 75+ MPH

3784 Views 35 Replies 17 Participants Last post by MaksPewPew, 2 d ago

truk

Discussion Starter · 3 mo ago

My wife and I bought a 2023 Ioniq 5 SEL RWD a couple of weeks ago and are experiencing a frustrating and repeatable issue: When you drive the car for more than about 55 miles at 75+ MPH, you experience a "Power limited" error message and the accelerator eventually becomes non-responsive.

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This is obviously a very bad thing to happen on an interstate, when you coast to a stop on the side of the road and are being passed by trucks at 80 MPH. If you turn the car off, wait about 5 minutes, and then turn it back on, you can usually continue your journey, but if you go above 70 MPH, you will experience the issue again. Interestingly, when driving at 68 or 65 MPH, I've not gotten the problem to happen.

Other than this (rather big) issue, the car is otherwise perfect and exceeds expectations. We took the car to the dealership to investigate the issue after it happened (we were 100 miles from home and just drove slow to get back home), and they were not able to find anything wrong with it, either with their diagnostic equipment or during a test drive (but they only drove a few miles at a slower speed than what is required to make the problem happen).

At first, I thought this might be an issue with Eco mode, which I was in when this first happened. However, I've gotten the issue to happen again in a very repeatable way, this time in Regular mode.

To see this in action, please see this video: New video by Stacy Pennington

Has anyone else experienced this?

What steps should I go through to get the dealer and/or Hyundai to address this issue?

Thanks in advance for any advice you have.

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1 - 20 of 36 Posts

07869nj

· #2 · 3 mo ago

That is very strange. I have a limited AWD version and have never had an issue like that. I would suggest buying a Veepeak OBDII dongle on Amazon (about $30) and use the free Car Scanner software to collect all the battery info and give that to the dealer. It will be able to show them exactly what is happening.

Reactions: 1

zamafir

· #3 · 3 mo ago

07869nj said:
That is very strange. I have a limited AWD version and have never had an issue like that. I would suggest buying a Veepeak OBDII dongle on Amazon (about $30) and use the free Car Scanner software to collect all the battery info and give that to the dealer. It will be able to show them exactly what is happening.

ditto, awd limited, never experienced it in a year and 9,000 miles - hit up the dealer

Reactions: 1

nlc201

· #4 · 3 mo ago

Never had this issue on my '22 SE RWD in 12k + miles driven....

Reactions: 1

SleeperPService

· #5 · 3 mo ago

Similar issue on the original Ioniq where turtle mode is kicking in going up a hill @70mph. Dealer has not got to the bottom of it.

www.ioniqforum.com

Turtle mode when battery > 20% on Ioniq 38 and SOH

I’ve had a weird issue recently whereby turtle mode is kicking in when the battery is not below 20%, last time it was 35% but it’s done it in the same place on my journey home which is when the vehicle is under heavy load going up a steep hill on a dual carriageway going at 70mph. I do this same...

www.ioniqforum.com

www.ioniqforum.com

Reactions: 1

truk

Discussion Starter · #6 · 3 mo ago

07869nj said:
That is very strange. I have a limited AWD version and have never had an issue like that. I would suggest buying a Veepeak OBDII dongle on Amazon (about $30) and use the free Car Scanner software to collect all the battery info and give that to the dealer. It will be able to show them exactly what is happening.

Thanks for the advice, and I will get one of those Veepeak OBD dongles and start collecting the data.

The dealership supposedly connected some type of internal scanner to it during their brief drives but never found any useful data from it.

nlc201

· #7 · 3 mo ago

Do you live in a warmer climate? I wonder if it might be a failure of the battery cooling system causing the battery to overheat? Or perhaps a bad cell in the battery that's malfunctioning? Unlikely, but I'm just trying to think what would cause a power limitation.

Hefner

· #8 · 3 mo ago

truk said:
My wife and I bought a 2023 Ioniq 5 SEL RWD a couple of weeks ago and are experiencing a frustrating and repeatable issue: When you drive the car for more than about 55 miles at 75+ MPH, you experience a "Power limited" error message and the accelerator eventually becomes non-responsive.

View attachment 48555

This is obviously a very bad thing to happen on an interstate, when you coast to a stop on the side of the road and are being passed by trucks at 80 MPH. If you turn the car off, wait about 5 minutes, and then turn it back on, you can usually continue your journey, but if you go above 70 MPH, you will experience the issue again. Interestingly, when driving at 68 or 65 MPH, I've not gotten the problem to happen.

Other than this (rather big) issue, the car is otherwise perfect and exceeds expectations. We took the car to the dealership to investigate the issue after it happened (we were 100 miles from home and just drove slow to get back home), and they were not able to find anything wrong with it, either with their diagnostic equipment or during a test drive (but they only drove a few miles at a slower speed than what is required to make the problem happen).

At first, I thought this might be an issue with Eco mode, which I was in when this first happened. However, I've gotten the issue to happen again in a very repeatable way, this time in Regular mode.

To see this in action, please see this video: New video by Stacy Pennington

Has anyone else experienced this?

What steps should I go through to get the dealer and/or Hyundai to address this issue?

Thanks in advance for any advice you have.

yes..my buddy owns the EV6 which has the same platform and batteries as the IONIQ5. he had the exact issue that you are experiencing..sorry to say but not good news for you. KIA couldnt replicate the problem or fix it. needless to say, he's contacted a lawyer and he has filed Lemon Law. Good luck to you!

AJim

· #9 · 3 mo ago

truk said:
My wife and I bought a 2023 Ioniq 5 SEL RWD a couple of weeks ago and are experiencing a frustrating and repeatable issue: When you drive the car for more than about 55 miles at 75+ MPH, you experience a "Power limited" error message and the accelerator eventually becomes non-responsive.

View attachment 48555

This is obviously a very bad thing to happen on an interstate, when you coast to a stop on the side of the road and are being passed by trucks at 80 MPH. If you turn the car off, wait about 5 minutes, and then turn it back on, you can usually continue your journey, but if you go above 70 MPH, you will experience the issue again. Interestingly, when driving at 68 or 65 MPH, I've not gotten the problem to happen.

Other than this (rather big) issue, the car is otherwise perfect and exceeds expectations. We took the car to the dealership to investigate the issue after it happened (we were 100 miles from home and just drove slow to get back home), and they were not able to find anything wrong with it, either with their diagnostic equipment or during a test drive (but they only drove a few miles at a slower speed than what is required to make the problem happen).

At first, I thought this might be an issue with Eco mode, which I was in when this first happened. However, I've gotten the issue to happen again in a very repeatable way, this time in Regular mode.

To see this in action, please see this video: New video by Stacy Pennington

Has anyone else experienced this?

What steps should I go through to get the dealer and/or Hyundai to address this issue?

Thanks in advance for any advice you have.

I had an issue one time with my car limiting me to 35mph in a 45mph zone. I pulled over restarted and it worked fine. I took it to Lithia in Fresno for the 5k check and told them about that. They had no answer even after looking for codes so they just cleared the computer, was not real happy with them especially since they are a certified Ioniq5 dealer. Best of luck finding out why this happened to guys.

Mikael48

· #10 · 3 mo ago

Interesting. If the issue is related to the high-voltage battery, bluetooth OBD2 dongle and Car Scanner ELM OBD2 app shows battery power limit (Available Discharge Power kW). App records trip parameters, so you can show it later to the service manager.

truk

Discussion Starter · #11 · 3 mo ago

I did get an OBD-II scanner and was able to duplicate the issue again today (this is the 2nd time on the same drive, at almost the same location - this problem is very repeatable, but it requires putting about 130 miles on the car to do it each time).

The only thing that stuck out in the record around the event was an engine temp of 192F, but that doesn't seem to be that hot.

Does anyone know what the nominal temperature range is for an Ioniq 5 electric motor?

AJim

· #12 · 3 mo ago

truk said:
I did get an OBD-II scanner and was able to duplicate the issue again today (this is the 2nd time on the same drive, at almost the same location - this problem is very repeatable, but it requires putting about 130 miles on the car to do it each time).

The only thing that stuck out in the record around the event was an engine temp of 192F, but that doesn't seem to be that hot.

Does anyone know what the nominal temperature range is for an Ioniq 5 electric motor?

Interesting question. I have not even given that a thought but as sophisticated as cars are now maybe the temp on the electric motor has a sensor so the computer slows the car down at a high temp? So your OBll picks codes for the electric motor temp? I guess should look into using an OBll occasionally.

Mikael48

· #13 · 3 mo ago

There are probably some DTC error codes stored in memory? You can read them with OBD2 dongle.

192F is not much for electric motor. Car Scanner app records everything displayed on screen, maybe you can check other temperatures: coolants, inverter, battery pack, DC inlet, coolant pump rpm?

theboysnskins1

· #14 · 3 mo ago

truk said:
My wife and I bought a 2023 Ioniq 5 SEL RWD a couple of weeks ago and are experiencing a frustrating and repeatable issue: When you drive the car for more than about 55 miles at 75+ MPH, you experience a "Power limited" error message and the accelerator eventually becomes non-responsive.

View attachment 48555

This is obviously a very bad thing to happen on an interstate, when you coast to a stop on the side of the road and are being passed by trucks at 80 MPH. If you turn the car off, wait about 5 minutes, and then turn it back on, you can usually continue your journey, but if you go above 70 MPH, you will experience the issue again. Interestingly, when driving at 68 or 65 MPH, I've not gotten the problem to happen.

Other than this (rather big) issue, the car is otherwise perfect and exceeds expectations. We took the car to the dealership to investigate the issue after it happened (we were 100 miles from home and just drove slow to get back home), and they were not able to find anything wrong with it, either with their diagnostic equipment or during a test drive (but they only drove a few miles at a slower speed than what is required to make the problem happen).

At first, I thought this might be an issue with Eco mode, which I was in when this first happened. However, I've gotten the issue to happen again in a very repeatable way, this time in Regular mode.

To see this in action, please see this video: New video by Stacy Pennington

Has anyone else experienced this?

What steps should I go through to get the dealer and/or Hyundai to address this issue?

Thanks in advance for any advice you have.

I just experienced the same issue with my Ioniq 5 with less than 500 miles. I was driving to Key West, Florida at an average speed of 75MPH. At about 65 miles into the trip I experienced the "turtle". The car just slowed down on its own and would no longer accelerate. I was lucky to make it to the side of the road without getting rear-ended by the vehicles behind me. Turned the car off for about 5min and started out again keeping the car at 65MPH and 15 minutes late it happen again. I had to stop a total of four times before I made it back home. Does anyone know if these or just one-offs with the Ioniq 5 car and is there a real fix?
Regards,

G

Neil F

· #15 · 3 mo ago

I assume you have searched for the powered limited error. Several hits point to battery temp

High battery temp related Ioniq EV (76) New owner... less than. 300 miles... multiple errors... | Hyundai IONIQ Forum
Low Battery temp Ioniq EV (76) Low battery temp. power limited message | Hyundai IONIQ Forum
EV6 manual (I assume the I5 has the same info 2023-Genesis-GV60-Quick-Reference-Guide.pdf (menlosecurity.com)
“Power Limited Due to Low EV
Battery Temperature, Charge
Battery” warning message is
displayed to protect the electric vehicle system when outside
temperature is low

GFergos

· #16 · 2 mo ago

truk said:
I did get an OBD-II scanner and was able to duplicate the issue again today (this is the 2nd time on the same drive, at almost the same location - this problem is very repeatable, but it requires putting about 130 miles on the car to do it each time).

The only thing that stuck out in the record around the event was an engine temp of 192F, but that doesn't seem to be that hot.

Does anyone know what the nominal temperature range is for an Ioniq 5 electric motor?

The problem could also be resistance somewhere in the cables connecting the battery to the electric motor. Wind resistance increases as the square of the speed you're going, so the amperage needed to drive the motor will be noticeably more at 75mph vs 65mph. If there's some small resistance in the cables and connections between the batteries and motor, the increase in amperage could cause a hotspot that some sensor is picking up. This would account for why you get the problem at 75mph but not 65. This will probably be really hard to find because you need to test it under load. What would be really great is if the OBDII codes could identify which specific sensor is causing it to go into turtle mode, but I don't know if OBDII codes are that fine grained.

Reactions: 1

truk

Discussion Starter · #17 · 2 mo ago

GFergos said:
The problem could also be resistance somewhere in the cables connecting the battery to the electric motor. Wind resistance increases as the square of the speed you're going, so the amperage needed to drive the motor will be noticeably more at 75mph vs 65mph. If there's some small resistance in the cables and connections between the batteries and motor, the increase in amperage could cause a hotspot that some sensor is picking up. This would account for why you get the problem at 75mph but not 65. This will probably be really hard to find because you need to test it under load. What would be really great is if the OBDII codes could identify which specific sensor is causing it to go into turtle mode, but I don't know if OBDII codes are that fine grained.

This is actually one of the best suggestions I've heard yet regarding this issue, and it makes a lot of sense.

We are in communication with Hyundai Corporate, as well as our local dealership, about this issue, and I'll pass this along as potential cause to be considered.

When I duplicated the issue recently with an OBD-II reader attached, the problem started happening as soon as I went above 70 MPH when the motor hit 190 degrees F. I think the problem is likely temperature-related, but I like the idea of resistance as a possible cause as well, or maybe a contributing cause.

Thanks for suggesting it!

Mikael48

· #18 · 2 mo ago

Any DTC error codes stored in memory?

truk

Discussion Starter · #19 · 2 mo ago

Mikael48 said:
Any DTC error codes stored in memory?

Strangely, no, there are no error codes that show up. That is the first thing I checked, thinking it was so strange that something so dramatic could happen and there would be no trace of it as even a note.

Mikael48

· #20 · 2 mo ago

It might be a single component overheating/malfunctioning, will be really hard to notice without Hyundai service tools. Screens in Car Scanner show some temperatures: coolant, motor, inverter, DC inlet, even coolant pump rpm, but there are probably 100+ other temperature/resistance sensors all over the internal network.

Reactions: 1

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