2018 Hyundai Sonata brakes problems

Filed Apr 20, 2026 · Brakes, Electrical · NC

We think there’s an issue with the abs module and wheel speed sensor because we started having a problem where the brakes wouldn’t work or would stutter. The car would shake real bad it would make an awful grinding sound but normally only when trying to stop at higher speeds or long braking. The only thing that made it stop was to unplug the abs but then other parts of the car stopped working like the speedometer and the sensors around the car. So we got the abs replaced but the new one started doing the same thing. We did some research and it sounds like the same issue Hyundai is having with the palisade. The incident that made us get it replaced to begin with was were driving down the road and we got to a traffic light but when we tried to brake they just didn’t work so we drove through the red light luckily the one person who was supposed to be going saw us and didn’t pull out in front of us so we didn’t get hit. We haven’t taken it to the dealership yet but my sister who teaches automotive repair at the community college is the one who diagnosed it so she said we should report it here so maybe it won’t happen to anyone else. Before we had the brake issue we were having problems with basically everything on the dash not working randomly. We’d be driving down the road and the speedometer and the outside sensors and the gas gauge and the traction control all would go out at the same time it’s the same stuff that went out when we had the abs unplugged so it seems that might be related.

Filed Aug 16, 2025 · Brakes, Driver assistance · IL

About a year and half ago, a lot of my engine trouble lights turned on while driving. It was sleeting at that time when the lights turned on and they're still on today. I paid to have the Hyundai dealer to check it out soon after the trouble lights first turned on. They diagnosed the problem as a faulty HECU. I would have had them replace this, but they estimated it would cost about $3800 to fix. This HECU malfunction is causing the following issues: ABS does not work, traction control does not work, forward collision prevention does not work, brake auto hold does not work, cruise control does not work probably because it can't auto brake any more. I've had some scary times driving and trying to stop when the roads have been wet or snowy.

Filed May 21, 2025 · Brakes · 40,000 miles · TX

The contact owns a 2018 Hyundai Sonata. The contact stated that upon starting the vehicle, the ABS warning light illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the ABS module had failed. The vehicle was not repaired. The dealer was notified of the failure. The manufacturer was not notified of the failure. The failure mileage was approximately 40,000.

Filed Jul 10, 2024 · Brakes · 105,000 miles · VA · crash · fire · 11 injuries

The contact owned a 2018 Hyundai Sonata. The contact stated that while driving at 35 MPH, a pedestrian alerted him that the vehicle was on fire. The contact noticed that the rear portion and driver side of the vehicle was on fire. While traveling around a curve the brakes became inoperable the contact jumped out of the vehicle. he contact sustained injuries to his left shoulder and leg and medical attention was provided. There were no warning lights illuminated. The vehicle continued to roll as it was burning. The vehicle crashed into a dirt mound at the end of a hill. The fire department was on the scene to extinguish the fire. There were four gallons of fuel on the ground. The vehicle was towed to tow lot. There was no police report fire or air bag deployment. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The insurance company deemed the vehicle a total lost. The failure mileage was approximately 105, 000.

Filed Feb 11, 2024 · Brakes, Driver assistance · MA · crash · 1 injury

Vehicle 1 operating normally in traffic on [XXX] in Westfield MA. Operator 1 notices alert on dashboard. As Operator 1 looks down briefly and returns eyes immediately to the road, she sees Vehicle 2 braking to slow or stop. Operator 1 depresses brakes, but vehicle does not slow as it usually does, nor does Automatic Emergency Braking engage as it always has in the past. Front of Vehicle 1 makes contact with rear of Vehicle 2. Dashcam footage appears like brakes did not activate at all, either manually or automatically. Vehicle 1 airbags deploy. Westfield Police respond, as well as Westfield Fire, who cut the battery cable. Vehicle towed to Interstate Towing, Inc. Yard 5, 20 Clifton St, Westfield, Ma 01085. (413) 593-1900 interstatetowing.com. Owner 1 viewed vehicle at tow yard, and noted that the battery was completely melted, with only portions of the plastic casing along with internal plates visible. Much of the plastic and rubber components immediately adjacent to battery location were melted and deformed. As a layperson, it almost appears as though the battery was in the process of shorting out just prior to the collision, possibly rendering many of the safety systems inoperable. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 3, 2023 · Brakes, Engine · TN

As soon as I start to press on my brakes the vehicle starts violently pulsating and locks up. Took the dealership they said my rotors and brakes were fine and we're unable to give any reason for this. Without brakes I cannot stop my vehicle and it seems like a faulty ABS but no light on dashboard. The engine consumes nearly 5.2 qts of oil in 1000 miles. Being this is not normal I have no idea I was running out of oil as soon as I was changing it which could have led to my entire engine stalling out and causing me to wreck. It's putting my life as well as other people's on the roads and danger

Filed Feb 28, 2023 · Brakes · 30,000 miles · FL · crash · 1 injury

The contact owns a 2018 Hyundai Sonata. The contact stated that while driving at various speeds, the brake pedal would depress to the floorboard with the maintenance message displayed on the instrument panel. The vehicle was taken to a dealer; however, the dealer was unable to determine the cause of the failure. One day while driving the vehicle, there was an abnormal tapping sound coming from the brake pedal while being depressed. The failure persisted while the brake pedal was depressed and the vehicle drove through a concrete post and a fence, causing damages to the post and the fence. The contact stated that the air bags deployed upon impact. Medical attention was not sought at the scene. The contact sustained bruising all over her body. A Police report was filed. The vehicle was driven back to her residence by a neighbor. The dealer and the manufacturer were notified of the failure. The vehicle was not repaired. The failure mileage was approximately 30,000.

Filed Feb 1, 2022 · Brakes · 8,896 miles · NY

The contact owns a 2018 Hyundai Sonata. The contact stated while their vehicle was parked, starting the ignition, and attempted to make 3 point turn exiting out of their driveway, the vehicle accelerated on its own and went over their curb into their neighbor yard. The contact stated they depressed the brake pedal to stop the vehicle, however, the vehicle continued to accelerate at a slow speed before finally coming to a stop. The contact was able to reverse and exit out of their neighbor's yard and continue to drive to their destination, however, the failure intermittently occurred several times. The contact took the vehicle to a local dealer who inspected the vehicle but could not diagnose the cause of the failure. The contact went to another local dealership (Cars Unlimited Of Suffolk LLC 2096 NY-112, Medford, New York 11763 Phone: (631) 758-2200) but the dealer was not able to duplicate the failure. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 8,896 miles.

Filed Apr 23, 2020 · Brakes, Electrical · TX

2018 hyundai sonata. Consumer writes in regards to rusty brakes. *ld the consumer stated the vehicle had issues start during cold weather. It would take about 15 minutes or longer for the vehicle to turn on. The battery needed to be replaced prematurely.

Filed Apr 23, 2020 · Brakes · 16,000 miles · NJ

Rough vibration slowly coming up steering when braking to stop. Could be rotors or tires. Started a few months ago.