Hyundai Ioniq 5 Complaints (2023)

385 consumer complaints on file.

#11527776June 19, 2023
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
The charging system in the 2023 Ioniq 5 has multiple issues with connectivity and charging above a certain threshold. When charging at home using an electrician certified install by Merit and a county approved installation and Emporia EVSE 48A charger, the car prompts with a message that reads "Electric Vehicle Charge Alarm was processed. Your vehicle is not charging because of a connection failure. Possible reasons include: blackout, payment incompletion, charging stop button enabled." This has only recently started happening with the temperature in the closed garage reaching above 80F. The only way to rectify is to charge below 40A and this same issue is being reported by other Ioniq 5 owners via online forums as well. As it relates to DC fast charging at public infrastructure, the Ioniq 5 has a reliability problem with connectivity to the CCS1 ports that are used with Electrify America stations. The common denominator appears to be the charging port of the Ioniq 5.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11527772June 19, 2023
VEHICLE SPEED CONTROL, LANE DEPARTURE: ASSIST, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
While driving on the interstate my 2023 Ioniq 5 SEL RWD experienced a failure with the front radar system stating that it was blocked. In reality there was nothing physically blocking the system which was verified on multiple pullovers to check the front of the vehicle. This caused the critical forward safety functions, HDA system, lane change assist functions, regeneration system, and smart cruise control to all be disabled. The car is available for inspection upon request and I have video of the car displaying the fault messages during the trip as it happened on multiple occasions.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11527720June 19, 2023
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
We purchased our 2023 Ioniq5 approximately 7 months ago. We saw an article in the newspaper about the 2022 Ioniq losing power while driving. That has happened to us 3 times in the last several months so it is not strictly the 2022 model. One time was particularly scary as I was entering a busy freeway the car lost power and as much as I pushed on the pedal I could not go more than 20mph. This happened for about 15-30 seconds then finally accelerated. My husband said he has experienced the same problem with this vehicle on 3 different occasions. Thank you.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11527682June 19, 2023
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
2023 Hyundai Ioniq 5 (SEL, AWD) has bad ICCU (intergrated charging control unit). Will only charge at DC chargers reliably, level 2 or level 1 chargers will only work intermittently. Has been in the shop 2 weeks with no estimated repair date as the ICCU is on backorder. This issue is affecting a lot of Hyundai/KIA/Genesis customers who's vehicles share the same platform. The dealer won't even say where I am in line to receive the ICCU vs. everyone else in North America. This is really unacceptable for a car I paid almost $60,000 for.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11525932June 7, 2023
ELECTRICAL SYSTEM
The charging port on the electric vehicle appears to have poor cooling as the port frequently overheats when connected to any level 2 charger that is within the vehicle's approved specs. I've measured it going as high as 200 degrees F before the car stops accepting a charge, and even after that the port will remain piping hot until it is physically unplugged. This is quite dangerous as I mostly charge at night and am asleep when it happens in my garage. A quick search online shows that hundreds of Ioniq5 owners are having the same issue. Hyundai released a technical service bulletin(23-EV-003H), so I can take it into a dealer for a software update that will fix the issue. However, that update only succeeds in restricting how much current the car will accept in order to keep the temperature within safe levels. This means that the car I purchased cannot function safely as advertised.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11525379June 5, 2023
ENGINE
What component or system failed or malfunctioned: Rear electric motor. Specifically the "engine oil pump" that is used to cool the rear motor. The pump does not respond to MCU commands and does not cool the motor. This causes the motor to overheat after about an hour of highway driving causing the motor to provide VERY limited power. How was your safety or the safety of others put at risk: When the above happens the car experiences a delayed throttle, and very little power to accelerate. This occurs while traveling on a highway where you may need to pass, but no longer have the power to do so safely. Has the problem been reproduced or confirmed by a dealer or independent service center: Dealer took the car in and did not properly attempt to reproduce the issue. Then stated that if the car does not produce a DTC then there is no issue. The dealer has since refused to accept the car again. This has been reproduced here: https://www.ioniqforum.com/threads/rear-motor-not-operating-45-min-after-charge.46007/ Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others: No, I have just started the process of reaching out to the manufacture, and if this fails I will be using my states lemon laws. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear: No this issue does not appear to throw any codes, lights, or messages. The dash shows the rear engine producing no power, and the throttle will only show half when pressed to the floor.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11524572May 31, 2023
ELECTRICAL SYSTEM
12v battery died within 6 days and needed to be jumped. Another 4 days and the 12v will not hold a charge at all. This is a new 2023 Ioniq 5 Limited AWD. Odo on the lot was 13 miles. Odo at 10 days was around 280. Waiting to hear from Hyundai, but dealer confirmed 12v is bad. Currently unknown if ICCU is also faulty.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11524271May 29, 2023
SERVICE BRAKES, VEHICLE SPEED CONTROL
brake lights do not come on when the car is in regenerative braking or driving mode and the driver is touching the gas pedal. Drivers following the car are not aware the car is actually braking not coasting. This is causing a rearending hazard. Mfr needs to correct issues so brake lights come on when car is in regenerative braking mode and the car is deaccellerating regardless of gas pedal activity
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11524188May 28, 2023
SERVICE BRAKES, ELECTRICAL SYSTEM
The Ioniq 5 has a braking system that does not engage the brake lights on deceleration when in certain regenerative braking settings. This is dangerous as the car will quickly decelerate and not warn drivers behind you potentially causing a crash because they are unaware the Ioniq is stopping quickly. Please have Hyundai address the issue for recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11524021May 26, 2023
SERVICE BRAKES, EXTERIOR LIGHTING, VEHICLE SPEED CONTROL
The Ioniq 5 when using level 2 regen, level 3 regen, and i-pedal (one pedal driving), does not turn on the break light when decelerating, even if coming to a full stop unless the driver removes their foot completely from the pedal or hits the break pedal. These driving modes allow the driver to perform regenerative breaking almost to a complete stop without turning on the break lights and warning other drivers behind you. With i-pedal specifically, the driver can 100% perform all stop and go traffic maneuvers without using the break and never have the break lights activate. This appears to be the default behavior of all Ioniq 5 vehicles and is controlled via software. The vehicle does not appear to measure rate of deceleration so even if the driver were to decelerate rapidly, the brakes would not activate. This has been extensively demonstrated on youtube and the best video example of this problem can be found here: https://www.youtube.com/watch?v=U0YW7x9U5TQ
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11523948May 26, 2023
SERVICE BRAKES
The brakes lights do not illuminate when slowing down using regen braking. This has cause cars to stop very close to rear-ending me. This video explains this issue in great detail https://www.youtube.com/watch?v=U0YW7x9U5TQ
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11523936May 26, 2023
EXTERIOR LIGHTING
When my car is configured to one pedal driving mode (iPedal), the brake lights only illuminate when the accelerator pedal is fully released. This means the car may decelerate rapidly (up to 0.25G or 2.5m/s^2 according to a report) under regenerative braking, while the brake lights remain off. I believe this is a safety hazard that can increase the chances of rear-end accidents.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11523916May 25, 2023
SERVICE BRAKES
Brake lights do not lit while decelerating using regen braking system without letting foot off of accelerator. There is no indication for vehicle behind mine to decelerate which can result in collision
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11523904May 25, 2023
SERVICE BRAKES
Brake lights do NOT come on when decelerating in I-PEDAL mode and Level 3 regen brake modes, perhaps more. The car should instead generously apply brake lights by default anytime deceleration occurs via regen braking.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11523888May 25, 2023
SERVICE BRAKES
When using most of the regenerative braking levels, including the one-pedal driving mode named “i-Pedal,” the brake lights will not illuminate until the drivers foot is fully off the gas pedal, or manually applying the brakes. This can create a dangerous, life threatening scenario leaving surrounding drivers unaware the vehicle is slowing. This has not been reproduced by the automaker not inspected by them, police, insurance, etc but has been verified on video. No warning lamps appeared.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11523870May 25, 2023
SERVICE BRAKES
The regenerative braking will not turn on brake lights unless the accelerator is fully unpressed. In the more aggressive modes (L3 and I-Pedal), the stopping power is very strong. Without brake lights, it catches other motorists off guard and they nearly hit me. For reference, I-Pedal mode is able to bring the car to a full stop on its own. This is dangerous. The brake lights need to come on depending on the rate of deceleration, not the accelerator pedal state. This can happen at any speed, but becomes more dangerous at highway speeds.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11523865May 25, 2023
SERVICE BRAKES, POWER TRAIN
When using the most aggressive braking energy recovery mode in the Hyundai Ioniq 5 (i-Pedal), the brake lights do not illuminate despite the aggressive nature of the braking provided by this mode. This mode brings the car to a full and complete stop and is very similar to commanded braking via the brake pedal. When using the L1-L3 braking energy recovery modes, the deceleration experienced by the car is more or less mild enough that it would be similar to a downshift in a manual transmission car. But the brake lights only illuminate if your foot is fully off the accelerator pedal. I am not aware of the regulations or SAE guidance to know if this is consistent with best practice, but it could be better with the brake light coming on once a certain deceleration (x m/s2) is reached. It is my opinion that a software change in the car's ECU could effect a fix for this. A mandatory recall would force the issue with Hyundai to actually do something about it. Note that Kia and Genesis share the same basic EV platform and may share the same logic fault in brake light activation. Here is a Youtube video that discusses the issue in a fair level of detail - https://www.youtube.com/watch?v=U0YW7x9U5TQ
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11523114May 21, 2023
ELECTRICAL SYSTEM
12V battery does not seem to be charging. After 2 days of not being driven, 12v battery status is too low to start the car. Jump starting works but same think occurs after couple of days of not driven.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11521709May 12, 2023
EXTERIOR LIGHTING, VEHICLE SPEED CONTROL
The Ioniq 5 offers a multi-level regenerative braking system, which slows the car down to varying degrees when letting off the accelerator pedal. While these systems work well to increase efficiency, the behaviour of the brake lights while in use is concerning. Very often the car is slowing considerably, enough to be akin to light braking, but the brake lights do not activate. This can be full let off the accelerator pedal and slowing with not brakes, or with a partial lift (especially on higher regen levels), where the vehicle is obviously slowing but the brake lights do not activate. This has been talked about on various forums and some review videos, and I expect this is not the first complaint placed about this issue. So far it has not caused a problem with my vehicle, but I have had to alter my driving habits to account for this, and it at times renders some of the vehicles technology dangerous to use, despite that technology being added to the car as a benefit to the driver under most conditions.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11518110April 20, 2023
HYBRID PROPULSION SYSTEM
The contact owns a 2023 Hyundai Ioniq 5. The contact stated that the vehicle failed to charge at 120 or 240 volts. The charging unsuccessful alert was displayed. The contact stated that the vehicle only charged on a DC fast charger. The vehicle was taken to the dealer where it was diagnosed that the ICCU (Integrated Charging Control Unit) that allowed both high-voltage and secondary batteries in vehicles to be charged had failed. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 500.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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