Unknown issue, but the car has auto braked 2x on the interstate going 65mph. No cars were around me nor any objects in the road. It stated auto braking and sensors going off. Resolved itself within 60 seconds, but did almost cause me to be rear ended because a tractor trailer was quickly approaching me.

- Knoxville, TN, USA

Occurred on [XXX] while travelling in the middle lane of a 3-lane highway just west of Raleigh, NC and heading west. The Emergency Brake Light came on, the car stopped suddenly and my head shook from side to side. This could have been a major accident if the traffic wasn-??t light. I do not tailgate and there were at least 6-8 car lengths between me and the car in front. No cars on either side. There was no beeping warning from the vehicle about being too close to other vehicles before the car stopped. I pressed on the gas pedal and the car moved forward. The weather was about 50-60 degrees, dry road and sunny. Next Step: Called Hyundai Customer Care on [XXX] and was advised to bring the vehicle in for inspection and correction. Took the car into the Hyundai Autonation dealership in Buford, GA, where the vehicle was purchased. They found nothing wrong. Note: Have researched this problem online and found multiple instances of the same occurrence. See the following online: Emergency Braking System Activates Intermittently | Hyundai Santa Fe Forums INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Hayesville, NC, USA

Whilst driving the vehicle a number of warning lights appeared on the dashboard. This occurred after the vehicle was brought to a stop at a stop sign. There were no outside influences before or after the warnings began. The vehicle remained operable and was driving back to our residence approximately 1 mile away. I made an appointment with the local dealership to investigate the issue. The appointment was made for the following day. Whilst driving the vehicle to vehicle to the dealership on the following day the brakes became temporarily inoperable forcing me to leave the road and hit the right hand kerb. After pumping the brake pedal several times the brakes re-engaged and I was able to stop the vehicle. The dealership have explained that a rear wheel speed sensor (ABS) had failed and was sending messages to the the braking system which made the braking system inoperable. The dealership replaced the sensor and at this time the vehicle is operating as expected.

- Brentwood, CA, USA

This hard brake peddle pressure issue started out immediately on an occasional basis but now occurs almost every morning on first start of the day. Press on the brake pedal - it's very hard to deflect - and if you don't overpower it to deflect the pedal enough to activate the brake lights, it won't start. Once you get it started the first time, brake operation will be normal for the rest of the day. The Hyundai Maintenance website is apparently aware of this potential problem. According to [XXX], it is likely caused by a malfunctioning brake booster or vacuum leak and recommends taking the vehicle to your dealer for diagnosis and repairs. This is apparently a common problem across multiple Hyundai models since there are several threads on this subject on [XXX] : [XXX] [XXX] [XXX] [XXX] [XXX] I took my vehicle to the dealer where I purchased it and left it with them for a couple of days, The Service Rep would not even acknowledge that I was experiencing this problem, even after I demonstrated this issue to the rep in person. Said they had thoroughly tested the vacuum line and found no leaks or problems and that the vehicle was performing as designed. Don't know how serious this is, but I have concerns. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Bradenton, FL, USA

While parking, the brakes failed. Although the brake pedal was correctly and completely depressed the car failed to stop until it hit the building causing damage to structure and injuries occurred to passengers. The brake pedal pulsated but the car did not stop. Prior to this, the brakes would sporadically pulsate while braking. There were vehicle health issues that were reported.

- Philadelphia, PA, USA

Upon braking hard and suddenly due to being cutoff on the interstate, it felt as if the antilock brakes did not properly engage but rather grabbed/grinded/scraped. Only when I let off the brake did they disengage. This happened the first time within 2 months of owning the car and with less than 2k miles on it, at highway speeds (65-70 MPH) and this sensation has happened probably 4 times in the 7 months I have owned the car under various scenarios of stopping quickly. In addition, it recently happened when driving 25-30 MPH and coming to a normal stop approaching a stop sign - where it felt as if the brake on the front passenger tire grabbed/grinded/scraped (but not on the 3 other tires). I have taken the car back for inspection at the dealer twice, neither time have they found any issues. In addition, one evening the stability control light flickered, sounded as if the dash was frying/sizzling with no reason - roads were not wet, no leaves, grass or other debris, etc. and speed was 25-30 - this happened twice within 3 miles. Dealer found no issue with car after performing visual inspection of wiring, check of system for code errors, nor driving test to reproduce issue. Had the brakes failed, I could have been in an accident causing serious harm to me/my passengers or whomever I could have hit. I believe the ABS system needs to be replaced or reprogrammed but the dealer refuses to acknowledge a problem exists. Online forums indicate similar (and worse) issues, also with people stating they cannot get a dealer to resolve their problems. This is a serious malfunction of either the electric or braking system in some capacity and should be fixed before people are severely injured or killed.

- Mt Juliet, TN, USA

On several occasions, the Automatic Emergency Braking System engages even though there is no evidence of a dangerous situation or imminent crash. It usually occurs during highway driving or at speeds over 40mph. In each case the brakes engage, the steering tightens, the AEBS notification appears on the dashboard and an alarm sounds. After a few seconds, the brakes and steering return to normal. This occurs even when there is no evident traffic issues. I googled the situation and found that other drivers of this car have had similar problems. Here are links to that result: https://www.santafeforums.com/threads/emergency-braking-system-activates-intermittently.17221/ https://I suggest that the NTSB open an investigation into whether this is an ongoing problem.

- New York, NY, USA

Since I have had the car, five months, there have been THREE INCIDENTS of the car braking to a stop suddenly and unexpectedly while I am driving. At no time were there other cars near me; I was not in danger of hitting anything or anyone as the road was clear. The stops were jarring and upsetting as I could not discern a reason for these sudden stops. I feel it is very dangerous to stop in the middle of the street without warning.

- Royal Oak, MI, USA

Over the last Tom th, I have encountered some pretty scary issues with my brand new Santa Fe purchased in April. Last week, while driving, after I turned on adaptive cruise control, the system alerted me that -??smart crusade control conditions weren-??t met-?? and kept trying to engage the front left brake -?" this occurred three days in a row. After turning off the smart cruise control and entering residential roads, the front left brake tried to engage in a manner that seemed consistent with ABS issue. I brought car in two days later to Dublin Hyundai and they said they couldn-??t find anything wrong with it. I picked the car up yesterday morning and then last night while driving on the highway, it alerted me that I need to -??check highway drive assist system-?? and a warning light came up. After about 5 minutes, the car jerked me incredibly hard to the left on the freeway and then athe light turned off. Then two days ago, I was driving my car on the highway the car randomly said -??emergency braking system activated-?? twice, while going 70 on the freeway in the middle of nowhere. This was while driving safely and no cars nearby either time. I looked online and it appears this is a problem that-??s occurred in many Santa Fe-??s, so there is clearly an issue with manufacturing (which I-??m assuming is the same case as the previous issues I-??ve run into).

- Alexandria , VA, USA

I was driving on the highway and the car phantom emergency braked for no reason at all.

- Butler, NJ, USA

Car was purchased January 21st had 3000 mile on it when service was needed for these issues. On march 23rd as I started driving my car wouldn't go above 30 mph, when pressing on the gas pedal the car wouldn't accelerate, the rpm gage would go to 4 but engine wouldn't make noise car wouldn't speed up. I put the car in park and back in drive with no improvement. I pulled off at a gas station restarted the car and it was fine. During this time the auto on off button was orange on the cluster which I had never seen it that color before. Was looked at by the dealer but wasn't reproducible. Not sure the cause, but safety was in jeopardy due to not being able to go with speed of traffic. Also a couple weeks after purchase brakes began to squeal, took car to dealer on march 28th was told brake pads were sanded and cleaned, upon leaving dealer brakes continued to squeal, car is now back at dealer, supposedly needing front rotors and pads replaced. Dealer won't drive car until rotors replaced. Safety was in jeopardy cause of possible brake failure and resulting accident.

- Wilmington, OH, USA

2023 Hyundia Santa Fe bought brand new from the dealership. During the course of the last month and a half the vehicle has done things with unknown origin. The panic alarm will randomly go off when the vehicle is turned off, no one is in it, or even near it. By locking the vehicle with the remote, the alarm will tend to go off about 20-30 seconds after the vehicle is locked and will sometimes not stop until the vehicle is restarted. The transmission will shift very roughly almost to the point that it feels like you are driving a manual transmission vehicle. The transmission lags in gears between 60-70 miles per hour and you feel a very rough back and forth shifting with in the transmission. Next the emergency break would engaging and then not releasing or reengaging when parked on a hill, flat service or anywhere. The break light on the dash would light up, blink, then it would go off, making it unknown if the emergency break was acting engaged or not. The dealership I purchased it from did replace the EMS module along with breaks and rotors on the vehicle. The auto shut off or the idle shut off will also randomly work, and not work. it will cut on and off even if the button is pressed to shut it off or prevent it from coming on. Now the air condition, along with the heat and heated seats has started to not work, randomly cut on, will not cut off etc. While driving i have had the heated seats turn on, along with the heat and not go off, nothing would cut off until the vehicle was physically turned off and restarted. No codes have ever been displayed or found by the dealership.

- Hope Hull, AL, USA

All lights that come on when you first start the vehicle stay on. ABS, forward collision, rear collision, side mirror check, down hill brake, etc. The brakes and brake pedal would lock up when attempting to brake. Pedal stays locked but the wheels didn-??t seem too. Brake system wouldn-??t respond to pumping the brakes the pedal stayed frozen. It could have caused me a serious accident.

- Columbia Falls, MT, USA