2014 Hyundai Sonata: brake failure

Filed Aug 2, 2024 · CA

I was driving at approx 30mph and all of a sudden I get a warning on my dashboard that says "Hybrid System Warning - Check brakes- safely stop and do not drive". My car slowed down and the brakes went to the floor. I was able to coast it to the side and turn off my car. I waited a few minutes, turned it back on and it was fine. The same thing happened 3 months ago. I took it to the dealer the first time it happened and they replaced the 12v battery and cleared all the codes. They couldn't find out exactly what was wrong. Suggestion was if it continues, then replace the hydraulic module for over $5k. It did happen again, but didn't take it to the dealer, but to a local mechanic. They checked the brakes and are fine. The codes were the same and said it might be the Hydraulic Booster High Pressure Accumulator (HPA). I was reading the Hyundai forum and this seems to happen to many Hyundai hybrids. I'm concerned for my safety and the safety of others if I was driving on the freeway and the same thing happens. There's no advance warning. I could cause an accident because of it. Seems that Hyundai needs to issue a recall on the hydraulic module and replace it.

Filed Nov 14, 2023 · Brakes, Electrical · PA

Brakes failed car did not stop once thrown in park I was going into oncoming traffic and could have been seriously hurt!!! Afterwards car completely died. I have been having all sorts of issues with this vehicle 2 months after purchase. I have paid for labor several times and each time I get the vehicle back the next day the vehicle is completely dead and needs to be jumped for each use. The dealership really hasn't provided a fix, currently brake fluid sign is on. This car has been towed and serviced at least 10 times. I need help

Filed Apr 18, 2022 · Brakes · CA

The first time this happened I had just parked in front of my house and put the car into Park when I heard a chiming sound coming from the car, and the message Check Brake followed by Hybrid System Warning! Safely Stop and Do Not Drive on the dashboard. I did not drive the car for severals after this. After that, I started the car with no issues and was able to drive it with no issues but 4 days later I got the same message while out driving, I stepped on the brake and heard a grinding noise and the brake pedal went all the way to the floor. I pulled over, stop the engine, turned off the ignition, waited a couple of minutes afterwhich the car started with no issue and I was able to drive home. Today I took it to Hyundai garage for the service dept to take a look at it. I am waiting to hear back.

Filed Sep 1, 2020 · Brakes, Electrical · 137,000 miles · PA

While driving my sonata an error appeared on my dashboard stating 'hybrid system warning! Safely stop and do not drive. Check brakes." when this occurs the gas pedal goes to the floor and the brakes grinds my tires. U can hear a loud chiming like sound coming from the car. I'm reading this issue with a number of sonata hybrid.

Filed May 3, 2019 · Electrical, Engine · 51,000 miles · GA

Engine recall it was friday night rush hour raining heavy traffic. While driving 35 MPH on a busy street.the car engine stopped,no warning it would not go. I coasted to a stop all system lights were on the . Dash board. Tried to restart car no use ,car just made noise but would not start. No warning.from the car.now the car will not turn off even with key out of car it will try to start and keeps trying to start.I had to disconnect the battery to get car locked. Brakes failed car rolling and used emergency brake to keep car from rolling. Towed to local firestone and the reading was not done bc the obd was found just hanging there. Car has only 51,000 miles. Very dangerous I could have been rear ended. I could have had my children with me.if this had happened on the express way I would have likely caused a very hugh accident.

Filed Dec 8, 2017 · Brakes · 40,001 miles · FL

Total catastrophic brake failure will driving slowly in a parking lot, brake pedal went to floor, followed by a warning light to stop and have vehicle serviced, and another warning hybrid system failure.

Filed May 10, 2015 · Brakes · 26,638 miles · CA · crash · 2 injuries

100 % brake failure. 45 MPH,moderate traffic, 6:30pm thursday may 7th 2015, dry pavement and approaching traffic that which made an abrupt stop ahead. Stepped on brake pedal, pedal fluttered as if anti locking brake activity was be activated. Car continued to free wheel forward, I stepped harder on brake pedal and pedal began pushing back to me. The harder I pushed the brake pedal the more it pushed back (there was no braking action).the vehicle failed to stop , and had enough distance to stop (I had a minimum following distance of two car spaces) but brakes failed to do so which caused me to crash into the vehicle in front of me. I have owned many cars such as dodge charger 2006 sxt/chevy malibu 2009 to name a few and never had this problem when applying the brakes. I'm the first owner of this car and this is the first hyundai I have ever bought.

Filed Oct 13, 2014 · Brakes · 4,750 miles · CA

100 % brake failure. 40 MPH,heavy traffic, clear sky, dry pavement and approaching red traffic light. Stepped on brake pedal, pedal fluttered as if anti locking brake activity was be activated. Car continued to free wheel forward, I stepped harder on brake pedal and pedal began pushing back to me. The harder I pushed the brake pedal the more it pushed back - there was no braking action. The car had to be stopped with the emergency brake. As the car came to a stop a yellow caution/malfunction symbol appeared in the dash console for an instant then disappeared. I was not able to see what the symbol was.