2014 Hyundai Sonata: ABS light or ABS activating

Filed Jul 18, 2026 · Steering · CA

I am submitting this complaint because I believe this issue presents a serious safety concern. My 2014 Hyundai Sonata experienced a failure related to the steering angle sensor, causing the ESC, ABS, and traction control warning lights to illuminate while driving. As a result, these important safety systems lost functionality and were no longer available to assist in maintaining vehicle stability and traction during normal driving conditions. This failure occurred without warning and required replacement of the steering angle sensor, followed by a required calibration. A critical steering-related component should not fail under normal driving conditions, especially when its failure can disable multiple electronic safety systems. Drivers may not immediately realize that these systems are no longer functioning, increasing the potential risk during emergency maneuvers, wet road conditions, or sudden avoidance situations. While researching this issue, I found that many other Hyundai owners have reported similar steering and electronic stability control problems. I respectfully request that the federal safety agency investigate whether steering angle sensor failures, related steering system components, or the associated calibration requirements represent a widespread defect affecting 2011–2014 Hyundai Sonata vehicles. If this issue is determined to be common, I ask that Hyundai be required to address the defect through an appropriate recall or extended warranty program so owners are not responsible for repairs involving a critical vehicle safety system.

Filed Apr 8, 2026 · Brakes · CA

ABS module/brakes system goes into limp mode randomly, which causes brake malfunction, throwing codes c1233, c1234 and c1236. There was a recall repair performed by Hyundai about two years ago, however there was two options on the federal safety agency recall 23V651000/campaign 251. One was to replace a safety plug fuse issue, TSB 23-01-054H . That is the recall they performed. The other recall repair which they did not perform is to replace the ABS module. The Hyundai dealer says I must pay a $225 diagnostic fee for them established they need to do this recall repair . Does that sound correct to you?

Filed Nov 24, 2025 · Electrical · CT

The High-Voltage (HV) Hybrid Battery Pack Assembly failed, resulting in a system shutdown and the required replacement. The primary code is DTC P0A80 ("Replace Hybrid Battery Pack"), which indicates an internal manufacturing or design flaw, specifically a weak battery module or compromised internal connection, not normal wear. The defective component (the high-voltage battery) is currently at and is available for inspection. The entire vehicle is also compromised by the Anti-Lock Brake System (ABS) Module defect (the federal safety agency Recall 23V-651000). My safety was put at risk in two primary ways: 1. Immediate Loss of Power: The hybrid system failure resulted in a loss of drivetrain power, rendering the vehicle nearly immobile. This occurred on at approximately mph, placing me at high risk of a collision. 2. Latent Fire Risk: My vehicle is covered under the federal safety agency ID 23V-651000 fire risk recall due to the ABS module. Hyundai specifically advised owners of these vehicles to "park their vehicles outside and away from structures" until the remedy is complete, confirming the severity of the latent fire hazard. The failure of the secondary HV battery system occurred within this already dangerous, electrically unstable environment. Yes, the vehicle was inspected by the Hyundai dealership / independent shop at the time of failure.. The manufacturer's corporate division has been contacted and is aware of the defect and the resulting $10,000 replacement estimate, as they offered a 50% "goodwill" subsidy which I am rejecting, asserting 100% coverage is required for a defect. Yes. The primary preceding warning was the intermittent appearance of the "Check Hybrid System, Turn off engine" warning.

Filed Oct 15, 2025 · Brakes · 90,000 miles · CA

The contact owns a 2014 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the Hybrid braking system warning light illuminated. The vehicle was taken to two separate independent mechanics, where it was diagnosed with ABS module failure. The contact was informed that the ABS module needed to be replaced. The vehicle was not repaired. The vehicle was taken to the dealer, where it was diagnosed with ABS module failure. The contact was informed that the ABS module needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was filed. The contact had received an unknown recall notification; however, the dealer and the manufacturer informed the contact that the VIN was not under recall. The failure mileage was approximately 90,000.

Filed Jul 26, 2024 · Brakes · SC

ABS control unit/pump is leaking. I was told it's not covered under warranty or recall. Local mechanic states they can't repair it because the part has to be properly programed at the dealership. I've spoken with other Hyundai owners and they have had the same issue.

Filed May 13, 2024 · Brakes · FL

Received recall notice on 4-16-24 and immediately called for an appt to repair ABS problem. I was told that the part was not available at this time and should call back in a couple of weeks. I called on May 2, 2024 and scheduled an appt. for May 7. After waiting for over an hour, I was told that, yes indeed, my car needed repair but could not be done at that time as this was only an inspection to determine that a repair was needed and someone would call when the part is available but they don't know when. I feel like I was given a run around.

Filed Jan 2, 2024 · Brakes, Electrical · TX

ABS module is damaged. Car is not operable. Dealership did diagnostic on vehicle. And stated there is an ABS recall. But no remedy as of yet. Car will not operate.

Filed Dec 15, 2023 · Brakes, Electrical · TX

Vehicle displaying "hybrid system warning! Safely stop and do not drive!" And "check brake" car will not drive over 15 mph. Also draining has And 12 volt battery. Took it to hyundai dealership and was told that the brake module was damaged and needed replacement. We are aware of the current ABS recall. And waiting for remedy

Filed Sep 27, 2023 · Brakes, Electrical · CA

Over past 2 years, repeat alarm & message on dashboard, says, “Hybrid System Warning! Safety Stop and Do not Drive.” During attempts to back vehicle from garage, brakes grind. Seemed to be on auto-stop, trying to stop the vehicle from moving. On 01/03/22, brought car to Laguna Niguel Hyundai. Invoice notes “Caused by HISTORY CODES IN AHB C2112 C1102 C1237; NO CODES CURRENT CLEARED HISTORY CODES AND TEST DROVE VEHICLE NO CODES OR LIGHTS ON AT THIS TIME.” Was told history codes related to something about “voltage too high” and “Accelerator switch circuit [ABS switch]” and “wheel rear input signal.” On 11/28/22, brought car to Laguna Niguel Hyundai to address the ‘check engine light’ that was on. Service manager said “battery was not corresponding with the engine”, something about “HECU” and how it’s needed to “check brake reservoir for fluid – so I should pump it due to air bubble inside.” On 6/12/23, was driving more than 70mph; began losing speed, down to 0 mph. Stepping on gas did nothing. Drifted toward side of road & got alarm sound and message on dashboard, “Hybrid System Failure.” Terrified. No control of vehicle, 4 passengers, stranded. Towed to La Quinta. Notes on Hyundai La Quinta invoice: “VERIFIED CUSTOMER CONCERN SCANNED CODES P1B25 HIGH VOLTAGE PATH FAULT; P1B77 HIGH VOLTAGE PRECHARGE FAULT; POWER RELAY ASSEMBLY FALUTY SAFETY PLUG ASSEMBLY ARE FAULTY.” Notes also said BATTERY REPLACEMENT: BATTERY FAILED TEST Caused by BATTERY FAILED LOAD TEST. On 7/31, “HYBRID WARNING MESSAGE” returned. Alarm sound, grinding brakes – car undriveable. Towed for service. Invoice: “Caused by LOW BATTERY STATE OF HEALTH 53%. RECHARGE BATTERY TO 100% AND CLEAR DTC AND ROAD TEST.” While 7/31 work was covered under warranty, felt unsafe. Why battery health poor, when it was replaced 6 weeks before? Then came 8/30. Car disabled. Alarm sound & message says, “Hybrid System Warning! Safety Stop and Do not Drive.” Service manager said “hydraulic power unit failure”.

Filed Oct 12, 2022 · Brakes · VA

From the time of my purchase of the car used in 2016 I noticed the the brake would sometimes make a squeaking sound if the brake pedal was depressed suddenly. In September of 2021 I noticed that a Brake Warning light would come on when starting the car. Sometimes the brake pedal would push to the floor as if there was no brake fluid pressure. I took the car to the Hyundai dealer and asked them to inspect and repair the problem. The problem was determined to be the ABS Pump along with the ABS Assembly. The units were replaced at a cost of $908.91. Later in June of 2022 the noise returned and the brake light again began to light. I didn't lose brakes but the light remained on whenever the vehicle was operating. I returned to the same dealer service shop and they inspected the problem and found DTC C1236. They checked pressure and it had 1054 Bar (needs to be 1000 Bar).The technician replaced the Hydraulic Electronic Control Unit and installed a Hybrid Noise Fix Kit. The cost for these repairs was $3351.15. I am aware of problems with other Hyundai model cars brakes. I hope that our car is safe to operate or park. The dealer confirmed the problems for both repair instances. I do not know if any other authorities have inspected this. I don't have the defective parts. The dealer service center retained them after both repairs.

Filed Feb 24, 2022 · Brakes · LA

Brake light illuminated & brake pedal travelled farther down affecting stopping of vehicle. ABS hydraulic control unit is leaking brake fluid. Repair shop confirmed leak.

Filed Feb 28, 2019 · Brakes, Driver assistance · 70,000 miles · TX

Esc light and hard braking issue(ABS module?): ESC light turns on and the car applies hard brakes without any action from the driver while driving. This happens while driving on a straight road or freeway (not while turning). Sometimes, the ESC light doesn't turn on but the brakes still get applied while in motion without any action from driver. It has happened 5 times so far - 2 of those while driving at more than 60mph on freeway but was fortunate to pull to the shoulder safely. One instance of the problem showed up when the car was stationary but with engine running (at a parking lot). As you could see, this is a safety issue putting us in danger without any prior indication or no known resolution. I have taken it to the local hyundai dealer service center but they cannot find the root cause yet. They have already tried replacing brake switch but that didn't help. I have filed a case with hyundai directly too and waiting to hear from them.