2023 Hyundai Elantra Hybrid

Auto would not go into reverse or drive gears at startup in regular parking space. Received a Bluetooth message that Drive Train would not function. Towed to dealership where problem confirmed. Electric engine ordered along with high voltage wires. Upon installation of these parts it was discovered that the Assay Harness was severely crimped during construction of vehicle at the factory and had crimped (cut) wires. Parts ordered and repaired. Hyundai refused to install new electric motor, only replaced Harness and wires. Please note this appears to be a defective auto as built at the factory.

On December 24 2023, the vehicle's forward collision warning failed. My son has a learner's permit. He was driving the car under my supervision. He pulled into a parking lot and hit a light post. We did not receive a warning, nor did the automobile automatically apply the brakes to avert the collision. There were no injuries. There was no property damage, except for our vehicle. I did not notify the police. In retrospect, we never hear alarms or warning when pulling into our narrow garage. Our other vehicles with the same safety feature do offer an alert in that context. I think the forward collision warning system is defective on this Hyundai Elantra. I have filed an insurance claim and notified the dealership by email. Next steps are pending after we hear back from our auto insurance claims adjuster.

The contact owns a 2023 Hyundai Elantra. The contact had received notification of NHTSA Campaign Number: 23V589000 (Electrical System, Vehicle Speed Control) and the recall repair was completed by a dealer. The contact stated while driving at approximately 60 MPH with the cruise control activated, she momentarily disengaged the cruise control to slow for traffic. The contact stated that when the cruise control was re-engaged, the vehicle independently accelerated to almost 100 MPH. The contact was able to slow the vehicle by tapping the brake pedal. The contact stated the failure became a recurring failure. The contact stated no warning light was illuminated. The local dealer who completed the recall repair was contacted and informed the contact that there was no available appointment until December 16, 2023, for the vehicle to be serviced. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 18,000.

Animal chewed the wiring harness causing an airbag malfunction warning and transmission failure. My safety was put at risk because the airbag wouldn't work and the transmission failed while I was driving. The vehicle is being repaired right now with a new harness. Talking with the insurance adjuster. I was informed this was a common issue with this vehicle due to the materials the manufacturer uses. The harness is not properly designed with the proper materials for the environment it is used in.

The contact owns a 2023 Hyundai Elantra. The contact stated while driving approximately 65 MPH, the Forward Collision Avoidance: Automatic Emergency Braking brake light illuminated, and the vehicle experienced phantom braking, causing the tires to skid and the speed to be abruptly reduced. Moments later, the Forward Collision Avoidance: Automatic Emergency Braking light turned off and the vehicle operated normally. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure, but no assistance was provided. The failure mileage was 750.

The contact owns a 2023 Hyundai Elantra. The contact stated that while driving at highway speeds, the Forward Collision Avoidance: Automatic Emergency Braking brake light illuminated, and the vehicle experienced phantom braking, causing the tires to skid and the speed to abruptly decelerate. Moments later the Forward Collision Avoidance: Automatic Emergency Braking light turned off, and the vehicle operated normally. The failure had occurred on several occasions. Additionally, the vehicle had experienced unintended acceleration, causing the vehicle to lurch forward. The vehicle was taken to the local dealer who was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was notified of failure. The failure mileage was 1,500.

I have been encountering a series of troubling and erratic issues with my vehicle. These problems occur under various driving conditions, including acceleration, steady-state driving, and braking. However, the most prevalent and problematic occurrences seem to transpire during acceleration and braking. During acceleration, I've observed inconsistent behavior. Sometimes, the car shifts smoothly, with minimal torque drop between gears. On other occasions, the vehicle accelerates initially but then abruptly loses all power between gears, resembling the sensation of someone engaging the clutch in a manual vehicle and shifting slowly. This results in a temporary power loss lasting 1-2 seconds, followed by an over-revving and clutch slip, leading to an unintended surge in acceleration. The issues I've encountered during braking typically begin with a chattering noise and vibrations that seem to be an imbalanced or shocked reciprocating mass, I can assume maybe one of the clutches/flywheel . This is often followed by decreased brake pedal linearity, requiring increased brake pedal pressure to stop. This normally results in an unintended aggressive forward jerk just before coming to a stop, akin to someone releasing a clutch on a manual transmission vehicle too quickly when downshifting while the engine speed is too low. The steady-state symptom occurs less frequently but occasionally involves a momentary loss of power, almost resembling a backfire without the noise. I can only assume that this is related to brief disengagement of the clutches. I sought assistance by taking my vehicle to a local dealership who kept it for a little over a week. Unfortunately, they were unable to reproduce these issues, and no actions were taken to address my concerns. This unpredictable behavior from the vehicle often catches me and my passengers off guard and really makes it hard to trust the vehicle.

While driving down an interstate at approximately 58 miles per hour, I turned on the cruise control and went to adjust it to 65 miles per hour. The car rapidly accelerated and it appeared on the dash that the cruise control defaulted to 110 miles per hour, which appears to be the maximum on the system. I tried to turn the speed down, but the cruise control would not go below 110 miles per hour. I immediately deactivated cruise control and continued to drive at normal speed. I tried multiple times thereafter to set cruise control, and it would again, rapidly try to accelerate the car to 110 miles per hour and would not let me decrease the speed. After stopping at a rest stop, turning the car off and on and driving again, it appeared the glitch was fixed and I was able to operate the cruise control normally. Please note that the "adaptive" part of the cruise control, including steering assist/lane departure worked fine the entire time.

Have experienced at least half a dozen instances of unprompted initiation of the automatic emergency braking system within having the car for about 3 months. Would say that this system is malfunctioning. Automatic emergency braking occurred for seemingly no reason in all instances while travelling on the highway at approximately 70 miles per hour. There were no vehicles in front of the car and no vehicles switching lanes in front of the car. However, there were vehicles behind the car and in other lanes adjacent to the car but behind the car. The unprompted braking is dangerous for the cars behind and could cause a rear end collision where the car behind the drivers car would not register such excessive braking due to the lack of action prompting the automatic emergency braking. Additionally, this can cause driver loss of control due to the extreme response. Problem has not been able to be confirmed by dealer or independent service center. No messages prior just the indicator on the dash identifying the engagement of the automatic emergency braking.