2017 Hyundai Elantra: ABS light or ABS activating

Filed Oct 19, 2026 · Brakes · CA

My 2017 Hyundai Elantra SE 2.0L (outside Recall 157/17V063 VIN range) has suffered 7 intermittent brake failures since 06/03/2026 (~118,563 mi), involving total loss of braking power, a rock-hard pedal, and/or resistance during pedal depression. The vehicle is at Temecula Hyundai and available for inspection. SAFETY RISK: Across 7 incidents (06/03, 06/17, 06/23, 08/29, 09/19, 10/09, 10/11), the brake pedal either met strong resistance halfway down with rapid metallic ticking from the front-left/under-hood area and reduced stopping power, or became completely rock-hard with total loss of braking power for 5-10 seconds (frequently while braking downhill). On 09/19, 1-2 seconds of pedal resistance/ticking transitioned directly into a rock-hard pedal and total brake loss. On 06/03, I had to jump a curb to avoid traffic. On 06/23, 09/19, and 10/11, I had to use the emergency brake to stop. On 10/11, total brake loss approaching a stoplight forced a hard e-brake pull, locking the rear tires and spinning the car sideways in front of cross-traffic before brakes returned 8-10 seconds later. REPRODUCTION & INSPECTIONS: Inspected by Temecula Hyundai across 5 visits (96+ cumulative days in shop) and an independent shop (both verified brake pads, rotors, and calipers are good). In June 2026, a dealer technician reproduced the stiff brake pedal on a road test and replaced the brake booster under warranty (06/16), without documenting on the work order if vacuum check valve/hose or ABS HECU causes were ruled out as the root cause. Failures recurred within the same week. On 10/13, a dealer advisor confirmed a front-left growling/chirping noise on a road test, yet the dealer only suggested customer-pay brake pads (with "high confidence" it would fix the total/complete brake failures). WARNING LAMPS: Zero warning lights or codes have ever appeared before, during, or after any incident. A near-daily front-left growling and chirping noise is present (not constant during all braking).

Filed Sep 12, 2025 · Brakes, Steering · MO

My EPS, ABS and electronic stability control lights all came on at once and my steering wheel went stiff while driving on interstate

Filed Aug 5, 2025 · Brakes, Wheels · LA

A car pulled out in front of me. I hit my brakes and now the calipers are locked. When the incident happened the brakes on the left side of the car locked up. I have no warning lights and the caliper is still locked. I have been to a couple mechanics and no one understands. If you unplug the brake line from the ABS unit the calipers release. Front calipers, brakes, and brake lines have been replaced

Filed Jan 31, 2024 · Driver assistance · FL

Driving at 70mph, another vehicle that is sitting on the grass on the side of the road decides to pulls out in front of me as I'm approaching(no warnings occurred from the collision assist system). I swerved to avoid the other vehicle and then he decides to pull into the lane that I'm trying to get into to avoid him. I break hard but not hard enough to lock the tires up or set off the ABS. Moments after that incident, faults begin to pop up on my instrument cluster, Check Lane Departure Warning System(LDWS), Check Autonomous Emergency Braking System(AEB) and Check Smart High Beam System. I figured that since some of these are safety related that I should report it. My vehicle has approximately 38000 miles.

Filed Aug 31, 2021 · Brakes · CA

The brake system continually fails intermintently and is placing the driver and all passengers at risk of injury and or even death. The brake pedal stiffens not allowing pressure to be applied to use brakes. The pedal has to be pressed in aggressivly 5-10 times before finally allowing brake assist to help brake the vehicle. Once pedal begins to activate again it is followed with heavy grinding then finally almost resumes as normal with normal braking. The brake assist system has failed on almost 10 occasions on myself and has been taken in for repairs 4 times and fails to be repaired and appears to not ever be located. The recall regarding the brake booster was fixed, but yet brakes continued to fail after repair. The dealership has since taken it back in for repair and said they located leaking rear back brake pistons and repaired that. I was given car back and the next day experienced brake failure on 2 occasions on the freeway. I immediately gave the vehicle back to the dealer where it is today and they now believe it is the ABS system modular. The dealership continues to take it in but fails to locate the issue causing brake system failure. There have been no warning lamps or other issues that have relation to brake system failure. Since issue appeared first 2 months ago, I have replaced brake pads, brake fluid flush, brake booster recall, back brake pistons, and now ABS modular, and brakes continue to still fail.

Filed Aug 24, 2021 · OH

When driving on bumpy roads or a transition to a bridge on a freeway the ABS and traction control will fail. There will be the pulse sound of the ABS but no brakes and the brake pedal will go stiff and brakint will take an excessive amount of time. Sometimes letting go of brake pedal and trying again will resolve issue. There have been instances where the ABS, Brake and Traction Control Light have come on and the only way to fix this is to power down the car and restart. Also another issue is rough idle or misfire/check engine light when accelerating. Diagnostics is showing misfiring on cylinder 3.

Filed May 13, 2017 · Acceleration, Brakes · 2,500 miles · FL

My vehicle has acc (adaptive cruise control) and, when set, will accelerate and brake as needed to keep a certain distance from the vehicle in front that the system has identified via the radar and camera. I had an instance where there was a momentary loss of positive control of the vehicle under certain conditions. In this event, it was a hazy afternoon with wet roads. I was following a vehicle on a road with the acc set. The vehicle in front started a deceleration less than 10mph/s and my vehicle automatically started progressively increasing braking action to maintain separation. 1.5 - 2 seconds following; it appeared as though the ABS kicked in and disconnected/overrode the acc witch subsequently stopped the braking action all together. As a result my vehicle proceeded torward the vehicle in front of me in a critical moment that required, now, even more braking action in conditions that initially caused the ABS system to activate under normal braking action controlled by the acc. I was aware and had not let the semi autonomous features of my vehicle lull me into complacency. I reacted quickly and a collision had not occered. Others may not be so quick to respond in a similar situation. I believe the system deactivated as a result of the ABS shaking the brake pedal or control linkages, where, in normal operation depressing the brake disconnects the acc if the system starts an unwanted acceleration or the operator simply wanted to disconnect the system without toggling the steering wheel disconnect switch. This feature is available on all limited ultimate 2017 hyundai elantras.