Mazda CX-5 abs comes on

Filed Oct 31, 2026 · Brakes, Driver assistance · NC

During hard or emergency braking at higher speeds, the Anti-Lock Braking System (ABS) activates and pulsates normally for approximately 1 to 2 seconds, then abruptly fails and stops pumping. Immediately after the ABS cuts out, the wheels lock up completely, causing the vehicle to skid with loss of traction/stability control, reduced steering control, and extended stopping distances. At the exact moment the ABS stops pumping and the wheels lock, the dashboard displays a "Smart Brake System Malfunction" warning message and illuminates both the ABS warning light and the TCS/DSC (Traction Control / Dynamic Stability Control) indicator light. However, as soon as the braking event ends, all warning lights and the error message turn off automatically on their own without needing to restart the vehicle. Because the fault clears itself immediately during the drive, there is no active warning on the dashboard showing that the ABS, TCS/DSC, and Smart Brake systems are compromised until the next high-speed emergency braking situation occurs. Vehicle diagnostic scans recorded error codes U3003-16-68 (Circuit voltage below threshold), U0316-09-08 (Error signal received from DSC/ABS module), and B13D3-16-8A. The vehicle has been inspected and serviced twice by an authorized Mazda dealership for this exact safety defect: on 8-Sep-2026, the dealership replaced the 12V vehicle battery, and on Oct-5-2026, the dealership replaced the ABS module. Neither repair resolved the issue, and on both occasions the dealership returned the vehicle claiming it was fixed. Testing the brakes confirmed the defect persists: under hard braking, the ABS still cuts out after 1 to 2 seconds, locks the wheels, and momentarily triggers the ABS light, TCS/DSC light, and "Smart Brake System Malfunction" warning before clearing itself again.

Filed Sep 2, 2026 · Brakes, Driver assistance · PA

On 09/01/2026 at approximately 55 mph, I was driving with adaptive cruise control engaged. The vehicle ahead decelerated abruptly. My vehicle began braking hard with no input from me for a fraction of a second. A red BRAKE warning appeared in the instrument cluster with an audible alarm. I then applied the brake pedal hard. On first contact the pedal barely moved from its rest position and was extremely firm. About a second into my application, while still traveling at over 25 mph, pedal resistance dropped sharply and pedal travel increased substantially. I had to push the pedal several inches farther to get back to comparable deceleration. The pedal did not pulse or vibrate. I came to a matching speed roughly one car length from the vehicle ahead, and only because I kept braking hard. I did not see an MRCC Cancelled message, though the BRAKE warning occupies the same part of the display, so I cannot say whether the initial deceleration came from Mazda Radar Cruise Control or Smart Brake Support. No brake, ABS, or DSC warning lamp illuminated before, during, or after the event, and none has since. There were no symptoms beforehand, and the brakes have worked normally since. Failed component: unknown. I cannot determine whether the change in pedal feel came from the brake booster, the DSC hydraulic control unit, the master cylinder, or the driver assistance system handing brake control back to me. The vehicle has not been inspected by anyone and no service center has reproduced the issue. The vehicle is available for inspection if needed. If a driver assistance system is commanding brake pressure and withdraws it during the driver intervention, total deceleration can drop at the moment when the driver still wants to stop aggressively to avoid a crash. Suddenly, the driver has to find the extra pedal travel while still closing on the obstacle. I slowed to a safe speed in time. With less room, or less attentiveness, I may not have been able to.

Filed Jun 19, 2026 · Airbags, Brakes · FL

On 06/18/2026, the vehicle displayed multiple safety warnings, including ABS malfunction, dynamic stability control/traction control malfunction, Smart Brake Support and Forward Obstruction Warning disabled, possible forward sensing camera malfunction, and airbag/seat belt pre-tensioner malfunction. These warnings involve braking, stability control, collision avoidance, airbag, and seat belt safety systems. This was not the first occurrence. On 04/24/2025, the vehicle displayed similar warnings, including critical brake system/Electronic Brake Force Distribution malfunction, ABS malfunction, Smart Brake Support and Forward Obstruction Warning disabled, possible forward sensing camera malfunction, and keyless entry malfunction. The vehicle was towed at that time. The vehicle was inspected by an authorized Mazda dealer in June 2026. The dealer replaced the battery under warranty, but I was not provided diagnostic trouble codes, a root-cause explanation, or written confirmation that the braking, ABS, airbag/seat belt, stability control, Smart Brake Support, Forward Obstruction Warning, and forward sensing/camera systems were fully diagnosed and verified safe. The dealer inspection report also listed the mileage as “No Mileage.” The vehicle is available for inspection upon request. I do not feel safe driving it because the repeated warnings involve braking, collision avoidance, stability control, airbags, and seat belt systems. I am concerned that an electrical, braking, or safety-control defect may disable safety systems while driving.

Filed May 6, 2026 · Driver assistance · MD · crash

On October 16, 2025, while slowly pulling into a parking space, my vehicle experienced sudden and unintended acceleration without driver input. I did not depress the accelerator. Despite attempting to stop the vehicle, I was unable to do so. The vehicle mounted the curb, entered the sidewalk area, and struck a community mailbox, a tree, and two legally parked vehicles. My vehicle and the two parked vehicles were declared total losses. At the time of the incident, pedestrians, including toddlers, were present on the sidewalk. This loss of vehicle control created an immediate and severe risk of serious bodily injury or death. Post-incident diagnostics indicated multiple system errors, including but not limited to: •Powertrain Control Module •Anti-lock Brake System (ABS) •Instrument Cluster •Smart Brake Support / Mazda Radar Cruise Control Of particular concern is that Mazda, through its authorized dealer Rosenthal Mazda of Gaithersburg, Maryland, had prior notice of abnormal vehicle behavior. On two separate occasions before the crash, I reported that the vehicle would jolt suddenly, as if struck from behind, and at times felt as though it was attempting to accelerate without input. On each occasion, I was informed that the dealer could not duplicate the issue. No corrective action was taken, and the vehicle was returned to service. This event constitutes a serious safety failure involving unintended acceleration and apparent braking or electronic control system malfunction in this-model vehicle. Given the involvement of advanced driver assistance systems and braking components, this matter warrants immediate and thorough review.

Filed Jan 22, 2026 · Brakes, Driver assistance · NJ · crash · 1 injury

What component or system failed or malfunctioned, and is it available for inspection upon request? - Smart Brake Support (SBS) & Forward Obstruction Warning system malfunctioned. Front radar sensor malfunctioned. Parking brake malfunctioned. I-activesense system malfunctioned. Emergency lane keep disabled. Dynamic stability control malfunctioned. Traction control system not operating correctly. Anti-lock brake system (ABS) malfunctioned. Brake system not responding. How was your safety or the safety of others put at risk? In total 10 malfunctions led to brake not responding and could not stop the car and resulted into a car accident. Has the problem been reproduced or confirmed by a dealer or independent service center? NO Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? POLICE report from car accident states brake malfunction. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Car was totally fine until all 10 error messages appeared on Jan.17th 2026 12:42-12:43PM and immediately the brake system did not respond and resulted in the car accident. **important** Police report documented that the officer on scene is a witness of the car dashboard shows “brake malfunction”

Filed Aug 21, 2024 · Acceleration, Engine · FL

The issue started happening [XXX]. I was driving home and the car went into limp mode. Several errors came on the heads up display and on the dashboard. At first I could not go faster than 31mph, then it dropped down to 17mph, then to 7mph by the time I got home. 1.When accelerating from a stop light, car goes into limp mode and won’t accelerate almost stalling in the road. You must pull over, turn off the car and wait 5 minutes so error clears so you can drive again. 2.Car goes into Limp mode when going up a hill 3.Between 46-48 mph, car hesitates when accelerating 4.Between 56-60 mph, car hesitates when accelerating 5.Error Codes received per Lake Car Care: P2299, C1001, B1303 I brought the car to Lake Car Care and they replaced the spark plugs and coils as the codes said it was a misfire on Cylinder 1 & 2. This cost me $ 947.57. This did not fix the problem. The mechanic Todd took the car for a ride and it went into limp mode for him also. He could not figure the issue out after having the car for a couple weeks so suggested I take it to Mazda in Clermont. Mazda has had the car twice for over 2 months now and cannot figure it out. They replaced the ABS Module for $ 1284 which did not fix the problem. Replaced the injectors for $ 1426 which didn't fix the problem. They did a fuel compression test which came back fine and cleaned the catalytic converter which they said was clogged and this didn't fix the issue either. It is unsafe to drive this vehicle on the road as it does not accelerate so it is putting myself and others at risk. Mazda corporate has been called and case manager has been assigned but has been NO HELP to me at all. Photos are attached of all error messages, text messages with Mazda, repair receipts, etc. August 9th, Mazda told me they are at a loss and don't know what else to do, I haven't heard from them since. Please help. I am at a loss and don't know what my options are. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 9, 2024 · Brakes · OH

Back brakes arent gripping, caliper isn’t working been changed quite a few times. Either the abs or electric brakes

Filed May 29, 2024 · Brakes, Driver assistance · TX

I had coplained about a long, soft brake pedal on 10 February 2024 to Hiley Fort Worth Motorcars and got a report on 13 February 2024 stated that after inspection, they could not duplicate my complaint, so they did a visual inspection and washed the car!!!! Today, 29 May 2024, I had to make an emergency stop and pressed the brake pedal to the floor! The ABS came on, but the brake pedal should never reach the floor. The other car had stopped and I swerved out of the way. No warning lights came on nor sounds. Additional information; if the brakes are applied by the adaptive cruise control, and you step on the brake pedal after the brakes have been applied automatically, the brake pedal is nice and firm, like it should be. But if there is no intervention with the car, the brake pedal is very long and soft.

Filed Oct 9, 2023 · Driver assistance · NY

Was driving at low speed and out of nowhere the warning lights came on , smart city , abs, among others. It's caused by this vehicles front facing camera and or front radar emblem malfunctioning causing the vehicle to slow down , low power , and steering wheel jerking making mechanical sounds. There's a tsb as well.

Filed Feb 16, 2023 · Brakes · IL

On Feb. 9, 2023, I started my vehicle and lots of warning indicators lit up the dash of my well-maintained vehicle. Check Engine, ABS, TPMS, SBCS to name some of the warning lights. When I took my car to the dealer, they told me the left front wheel speed sensor had mechanical failure and would need to be replaced. Said the car's antilock brakes wouldn't work without it being replaced. My car also has the automatic brakes to prevent collision and stability control systems which are dependent on wheel speed sensors' function. My vehicle mileage was 59307 when I took it to the dealer. Over $600 repair bill.