2024 Mazda CX-90 electrical problems

Filed Oct 30, 2026 · Electrical, Transmission · PA

Vehicle alarming charging system malfunction. Vehicle lagging and lurching forward. Unable to drive safely. Battery lights on. Second time this has happened. Currently at dealership for repair.

Filed Oct 19, 2026 · Electrical, Engine · AL

While driving through a busy intersection with my family inside the vehicle, my 2024 Mazda CX-90 suddenly experienced a complete loss of propulsion. Pressing the accelerator pedal produced no response, leaving the vehicle unable to accelerate or maintain speed. The vehicle displayed warning messages stating “Engine malfunction” and “Stop safely and shift to Park.” I was forced to rely on the vehicle’s remaining momentum to coast out of the busy intersection and into a nearby gas station. This unexpected loss of propulsion created an extremely dangerous situation and placed my family at serious risk of a collision with surrounding traffic. Following the incident, the vehicle was taken to Hiley Mazda, where technicians diagnosed a failed 48-volt mild-hybrid battery and ordered a replacement under warranty. A leaking radiator was also discovered during the same service visit. This vehicle has an extensive history of electrical malfunctions, abnormal i-Stop operation, software-related issues, and previous safety concerns. However, this incident was particularly alarming because the vehicle completely lost propulsion while operating in active traffic. I am extremely concerned that this type of failure could occur in other Mazda CX-90 vehicles, potentially resulting in a serious accident or injury. I am requesting that the federal safety agency investigate this sudden loss-of-propulsion failure and determine whether it represents a broader safety defect affecting Mazda’s 48-volt mild-hybrid system.

Filed Oct 9, 2026 · Electrical, Engine · 46,464 miles · TN

The contact owns a 2024 Mazda CX-90. The contact stated that the vehicle was previously repaired by a dealer. While driving, the vehicle lost motive power. The contact turned off and restarted the vehicle. Additionally, the front passenger’s seat failed to move as needed. The vehicle was taken to the dealer, and it was determined that there was a radiator and battery case leak. The contact was informed that the vehicle was unsafe to drive and was provided a loaner vehicle. The dealer replaced the battery and the front passenger’s seat electric switch. The battery case and radiator needed to be replaced. The manufacturer was notified of the failure by email. The failure mileage was 46,464.

Filed Sep 2, 2026 · Brakes, Electrical · GA

Our 2024 Mazda CX-90 has experienced the same significant malfunction on two separate occasions while being driven on busy public roads. The vehicle displayed an “Acceleration Limited Due to Battery Condition” warning and experienced significantly reduced/limited acceleration while driving. This put the occupants and other motorists at risk because the vehicle could not accelerate normally in traffic. A similar occurrence while merging, crossing an intersection, or traveling in heavy traffic could potentially result in a collision. The vehicle has been taken to an authorized Mazda dealership twice for the same issue and has been out of service for approximately six cumulative weeks. The vehicle is currently at the authorized Mazda dealership and is available for inspection. The dealership has been made aware of and is attempting to diagnose/repair the recurring condition. The exact component or system responsible for the failure is currently UNKNOWN. The issue recurred after the vehicle was previously returned to us following the first repair attempt. Prior to/during the failure, the vehicle displayed the warning message “Acceleration Limited Due to Battery Condition.” Any additional warning lamps, diagnostic codes, or underlying component failures are currently UNKNOWN and are being investigated by the Mazda dealership. Additionally, while our 2024 CX-90 was at the dealership, we were provided a separate 2026 Mazda CX-90 as a loaner vehicle. While that vehicle was being driven on a main public road, it suddenly lost all power. The steering wheel and pedals became locked or unresponsive, leaving the driver unable to normally control the vehicle while it was in traffic. Fortunately, a collision did not occur. The 2026 vehicle was returned to the Mazda dealership and is available for inspection. The exact cause of that failure is currently UNKNOWN. Experiencing safety-related failures while driving two separate Mazda CX-90 vehicles has raised serious concerns rega

Filed Aug 13, 2026 · Electrical · CA

Driving down the freeway, the car throws an error code, reduces speed from 75 to 40 in seconds, with enough time to pull off the freeway. The car has an error code stating "Hybrid battery malfunction." Now the car will not start. The Dealer could not get it started and now wants to charge me for a diagnostic. But from my understanding, they should cover a new battery under EPA regulations (40 CFR Part 85). Any help would be greatly appreciated.

Filed Aug 5, 2026 · Electrical, Engine · NY

I am reporting a recurring safety-related issue with my 2024 Mazda CX-90 Turbo S Premium involving the mild hybrid system. The first failure occurred at approximately 28,000 miles. While driving, the vehicle displayed multiple warning messages, including "Mild Hybrid Battery Malfunction," "i-Stop Malfunction," and "Engine Malfunction." Shortly afterward, the vehicle entered a reduced-power (limp mode) condition. The loss of normal power made it difficult to safely accelerate and keep pace with surrounding traffic, creating a significant safety concern. The dealership diagnosed the vehicle and replaced the mild hybrid battery. My vehicle remained out of service for approximately one month while repairs were completed. At approximately 56,000–58,000 miles, the same problem occurred again. The vehicle once again displayed the "Mild Hybrid Battery Malfunction," "i-Stop Malfunction," and "Engine Malfunction" warning messages and again entered reduced-power mode while driving. The repeated loss of power created another serious safety concern because the vehicle could not accelerate normally when merging into traffic or driving on higher-speed roads. After diagnosing the second failure, the dealership informed me that, in addition to replacing the mild hybrid battery, corrosion had been found in the wiring harness and internal wiring associated with the hybrid battery system. Those components also required replacement. Due to parts availability, my vehicle remained at the dealership for an extended period before repairs could be completed. This vehicle has experienced the same hybrid system failure twice within approximately 58,000 miles, despite the first battery having already been replaced. I am concerned that this is a recurring defect affecting the mild hybrid electrical system. A failure that causes multiple system malfunction warnings and forces the vehicle into reduced-power mode while driving increases the risk of a crash, especially when merging onto highways

Filed Jul 15, 2026 · Electrical, Transmission · TN

I am writing to formally notify you that I have officially filed comprehensive complaints with the federal safety agency (the federal safety agency), the Tennessee Department of Commerce and Insurance (TDCI, Case #202604748), and the Better Business Bureau (BBB) regarding Wyatt Johnson Mazda. I am submitting my vehicle's official Warranty Vehicle Inquiry Report as evidence of consistent technical issues and mismanagement by Wyatt Johnson Mazda. Please note the following: History of Repeated Technical Issues: The Warranty History shows a long list of repairs, including PCM/TCM reprogramming and other electronic service actions performed by the same dealer. This demonstrates that the vehicle has had ongoing, recurring technical problems that the dealer was well aware of. Contradiction in Dealership's Claims: Despite this extensive record of technical service, when I brought the vehicle in for the steering issue, the dealer claimed there was "no issue." This report clearly proves the dealer has been documenting and performing technical service on this specific VIN since 2023, making their claim of "no issue" highly suspicious and professionally negligent. Evidence of Neglect: The report confirms that my vehicle has been serviced exclusively by this dealer (Dealer 24014). They have full knowledge of the vehicle’s history, yet they chose to ignore the steering defect and attempted to charge me for a repair that should have been addressed under recall or warranty considerations. Bad-Faith Conduct by General Management: Furthermore, the Dealership General Manager persistently refused to acknowledge these documented defects. He went as far as bringing a technician to confront me, and despite me presenting this official warranty history as evidence, they dismissed it entirely and demanded $2,438 for a steering system replacement. I have photographic evidence documenting this interaction and the demand for payment, which confirms their bad-faith efforts to extort r

Filed Jul 9, 2026 · Electrical, Engine · 29,000 miles · LA

The contact owns a 2024 Mazda CX-90. The contact stated that while operating the vehicle, several warning messages were displayed on the instrument panel, including the electronic stability control and the check engine warning lights. Later, while driving, the power steering failed, causing the steering wheel to become difficult to turn in either direction. The vehicle was driven to a local dealer, who was unable to determine the cause of the failures. The contact was informed that the battery would not remain charged. The manufacturer was not yet contacted. The failure mileage was 29,000.

Filed Jun 30, 2026 · Electrical, Engine · MT

There was a recall issued within the last year for my make and model vehicle, in March 2026, it was fixed when my car was towed to a Mazda dealership due to a check engine light and "hybrid engine malfunction". On June 24, 2026, the vehicle went into limp mode, the error message resolved upon turning off the vehicle. There were no check engine lights that appeared. On June 25, 2026, the vehicle went into limp mode on I-5 in traffic. We were able to safely get the vehicle to a safe location out of traffic. The error code on dash was "hybrid engine malfunction" again. The radiator was replaced at a second Mazda dealership, we were told "that should fix the problem". There was no indication the radiator needed replaced due to no fluids leaking and no overheating of the vehicle. The battery did fail during this visit. On June 26, 2026, when we were on I-90 in traffic again, the vehicle went into limp mode again with the same hybrid engine malfunction warning. The vehicle was towed to a third Mazda dealership to finally have the hybrid battery finally replaced. The only warnings were when we went into limp mode, no dash lights or check engine lights, nor overheating. The safety of my family was put at risk due to the vehicle decelerating from 75 mph to 35 mph in the fast lane of traffic twice. Mazda has done all service repairs and recalls.

Filed Jun 29, 2026 · Driver assistance, Electrical · PA

Over my time owning this vehicle i have had several different safety concerns. although they have been resolved by the dealer, i have concerns for anyone purchasing this make and model. 1. lane departure. i have turned off lane detection because i have had the car try to auto correct and jerk me to the left into oncoming traffic 2. i have had incidents where the driver door was unable to be opened from inside. i had to roll down the window to open the door and get out 3. At a speed of 45mph, the vehicle suddenly went into limp mode. the car turned off and luckily i was able to pull over into a safe area. again i experienced the door locking from the inside. all issues and solutions have been documented at dealer services. these issues are of great concern and potentially could have been harmful or fatal. i no longer have trust in this model or company.