2009 Hyundai Sonata: ABS light or ABS activating

Filed Jan 6, 2026 · Brakes, Electrical · NC

Brakes seize up while driving and then cannot move the vehicle. This causes a dangerous situation while driving and then breaks lock up and cannot move car even though vehicle is on and then stopped for a stop light. Car must then be turned off and sit for about 30 minutes so it can unseize and when that happens, you can then resume driving and then check engine light comes on. Brake lights were staying on even when vehicle is shut completely off. ABS and ESC lights stay on consistently and never turn off. Vehicle brake switch was replaced at Carolina Hyundai of high point, NC. So break lights have been repaired. They had to order the stop switch lamp replacement for recall as it was never done and will be fixed in next week. 3 door handles fell off and cannot open the rear driver side door at all. Window electric system won’t let windows go up and down and had to make a latch pull string to open driver door. Passenger door will not open at all and no handle and is a dangerous situation. Break switch not being replaced would have cause an electrical fire and is a complete dangerous vehicle even after being inspected less than a week ago

Filed Jul 3, 2022 · Electrical, Transmission · IL

We purchased this vehicle used 9/2022. A week later it began to jump upon accelerating and slowing down. We took it in and they said it was the power train control module and our warranty would not cover it. So it would cost us around $1600. We can’t afford that. We have only driven it a few times since. We were parked in front of a curb and the car accelerated us into a curb. Now, the ESC OFF, ABS, and engine light are illuminated. This is not a. It also wear and tear issues, as I’ve seen many others posting similar experiences. Our car is an ‘09 with almost 90,000 miles on it.

Filed Jan 23, 2020 · Brakes, Electrical · 96,500 miles · CA

Check engine light is on. Hecu internal failure. Active dtc present: c1237 primary pressure sensor signal. Sensor failure inside the ABS control cycle. Values at pressure sensor changed from 0.3 bar to 78.0 bar; no change in supply voltage. Supply voltage constantly at 14v. Hyundai has mentioned that there are no active recalls and that this part is life threatening if it fails - but since the warranty has expired they are shying away. Online there are several known issues with hyndai and hecu. Specially for models before 2009. Its hard to believe that hyundai is not aware of this problem and seems like they are avoiding their responsibility and playing with human life. Would appreciate if the government can do something.

Filed Jul 6, 2017 · Driver assistance · OH

We purchased a 2009 hyundai sonata from voss hyundai in centerville, ohio on 5/21/2009. On 10/14/14 we took the car in for an 'important safety recall' which stated that they changed the brake light switch because it could be defective and cause several problems, one of which would cause the illumination of the ESC (electronic stability control) lamp among other things. Eight days ago our ESC light and ABS light came on and stayed on. I made an appointment and took the car to voss this morning only to be told that I would be charged $103 to even find out what the problem is, not to mention the charges for actually fixing a safety recall problem which I am sure would be expensive. I consider this to be a safety problem related to the previous recall work. They may have replaced a perfectly good brake light switch with a faulty one. This car has 12,875 miles on it and we only use it occasionally. It is in a garage at all times and this morning was the first time it has been out in rain. We had not bought a new car in many years and bought this one because of the great 10 year warranty on it. Apparently I should have sat in the showroom and asked to read the fine print on their warranty before buying it. I have researched this problem on the internet and many people are having the very same problem with all models of hyundais. Several people have experienced stability and steering problems related to this defect in design or parts which could easily lead to an accident. We really liked the car until this happened, the dealership 'not so much' now. I really think that hyundai should admit that there is a safety problem and fix the problem correctly for the many owners who are having this happen to them, not just a $10 brake light switch after a $103 diagnostic charge.

Filed Nov 1, 2016 · Electrical, Engine · 143,000 miles · TX

Car started as usual and I was driving on a city street getting ready to get on the highway. All of a sudden the car would only go about 20 MPH and reach 1000 RPM. It died shortly thereafter on the highway frontage road. All of the lights for ABS, brakes, check engine etc. Came on but the emergency flashers would not work so I had to keep pumping the brakes so nobody would run into the back end of my car. It would not restart so I had to have it towed to the dealer. Dealer stated valve cover gasket had leaked oil onto the alternator and ruined it. That in turn ruined the battery. Car was repaired for $1400 including the tow and a rental car. After looking at hyundai recalls, I noticed the one for the 2009 vera cruz (the federal safety agency# 14v415000) in which 61,122 units were recalled for this same problem. In researching the affected valve cover gasket, I found the same one was used on my 3.3l engine that was listed as defective on the 3.8l vera cruz engine. If that part was defective on that vehicle, why was the scope of this recall not extended to cover all possible vehicles that could be affected? I would like the cost of repairs refunded to me since hyundai obviously knew this part was defective but didn't issue a recall to cover all affected vehicles.