- Serious safety issue: car stopped suddenly in the middle of traffic - Errors appeared: Hybrid System Malfunction, -??vehicle can not be driven-?? and -??Electrical Leakage in Hybrid System Detected-?? - Would not come out of park, had to be towed to Mazda dealership - Picked up car and after 15 min of driving the 'hybrid malfunction' light came back on - Car was returned to Mazda dealership for testing

- Bethesda, MD, USA

Brought vehicle into Dealer for Service due to Check Engine Light being on and Notification of a Malfunction of the I-Stop System. Service Tech indicates that this is a known issue with the Hybrid Battery in these vehicles that could cause the vehicle to unexpectedly stall. This safety issue is significant enough that they would not let us take our car home while we wait for them to obtain a battery, which are currently on backorder. Pursuant to a conversation with a Mazda Customer Experience Representative this has been a known issue since at least January. We have not received any correspondence from Mazda regarding this issue. It would appear that a Bulletin or Recall is warranted for what appears to be a prevalent issue with significant safety impacts.

- Sterling, CT, USA

The contact owns a 2024 Mazda CX-90. The contact received notifications of NHTSA Campaign Numbers: 24V814000 (Electrical System, Structure) and 24V815000 (Power Train, Engine and Engine Cooling); and parts were available. The contact stated that upon taking the vehicle to the dealer, he was informed that the manufacturer would not cover the cost of the repair. The manufacturer was made aware of the issue and confirmed with the contact that as the second owner of the vehicle, he was not entitled to have the cost of the repair covered by the manufacturer. The contact had not experienced a failure. Parts distribution disconnect.

- Massapequa Park, NY, USA

Hybrid battery failure. Battery issue can cause car to lock up while driving. Dealer service department indicate they have at least 6 vehicles with this same issue. The vehicle has not been inspected by other than the dealership service department that I am aware of. While driving to the dealership for a routine oil change, the car made a quick odd noise then 3 alerts came on said Hybrid system malfunction have vehicle inspected, engine malfunction, system malfunction. Dealer inspected vehicle determined needed a hybrid batter replacement, indicated they could not say vehicle was safe to drive as it could just stop working. Considering they already have a number of cars with same issues in the shop I am concerned this could be a defect problem in many vehicles.

- Pardeeville, WI, USA

Issue Summary: Since December 27, 2024, my vehicle has experienced a hybrid malfunction and leakage issue three times. Each time this occurs, the vehicle becomes completely inoperable and cannot move, requiring a tow truck to take it to the dealership. Since December 27, 2024, my car has been in the shop four times, yet the issue persists. This raises serious reliability and safety concerns, as the vehicle can suddenly become unusa

- Verona, NJ, USA

Received Hybrid Battery Malfunction and Electrical Leakage Detection alerts two weeks ago. Dealer has not been able to fix. First they said it was the water heater, then they said my radiator was leaking and I need a new one. Estimated 4 additional weeks for repair.

- Carmichael, CA, USA

Bought this brand new CX90 Premium in October 2024! As of today Feb 11, the car has been in the dealership 4 x fir the same issue!! Dead battery after sitting for 2 weeks! They have replace one small battery and that worked for a month! Took it in last week for the same issue! Dead battery! We find that this is a very coming problem. They said they would now replace the 58 volt battery but it is on back order for 8 weeks. In the mean time I-??m paying on this car and I have to drive a loaner which isn-??t even close to my car! I-??m finding out by talking to other customers this is a common problem! We didn-??t get any notice or call! I am demanding this be considered -??lemon law-?? as this is the fourth time it has been in for the same problem. I want all my money back that I paid and demand Mazda USA issue recalls for this issue. It is definitely a big safety issue! The dealer seems to be trying but they are frustrated as well! They are Olympia Mazda in Olympia, Wash, service manager is James Ellis Please respond! Thank you for any help and assistance [XXX] and [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Olympia, WA, USA

While vehicle was in motion, warning light came on stating -??engine malfunction, have the vehicle inspected-??. Engine light stays illuminated. The message and light now appear at startup

- Pearl River, NY, USA

At approximately 16:50 engine malfunction warning light appeared and dealership was notified. Appointment scheduled for 4 days after. At 17:21 car began swerving uncontrollably along I80 with warning -??engine malfunction, have the vehicle inspected.-?? The car was shaking violently and veered off the road into the ditch between the eastbound and westbound highway. The car was totaled. Review of the vehicle app indicated that just before the crash at 17:19 several critical vehicle malfunctions messages appeared. The vehicle crashed at 17:21.

- East Stroudsburg, PA, USA

The fuel gauge and range indicator are faulty. I was doing long-distance highway driving during the holidays. At 1/4 tank, the range indicator said 110 miles until empty. As soon as the needle dipped a fraction below 1/4 tank (about 20 miles later) the range indicator dropped instantly to 40 miles left AND THEN DROPPED ONE MILE PER SECOND UNTIL IT REGISTERED ZERO. The needle also fell at the same rate until I was driving on the interstate with zero range and a gas gauge buried below empty. All of this occurred within one minute. I pulled into the nearest gas station and filled up with $12.71 gallons (it's an 18.5 gallon tank). So I actually had 5.79 gallons left (or $156.33 miles of range at 27mpg on the highway). Not being able to rely on the gas gauge/range indicator is a safety issue.

- Parkville, MD, USA

The contact owns a 2024 Mazda CX-90. The contact stated while driving at approximately 3 MPH, the vehicle unintendedly accelerated; however, the accelerator pedal was not being depressed during the failure. No warning light was illuminated. The vehicle was taken to a dealer and was diagnosed that a software update was needed. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The failure mileage was approximately 3,000.

- Irvine, CA, USA

I was driving my 2024 CX90 PHEV when a warning about an electrical leakage in the hybrid system was detected. I brought it home and parked in my garage. I called the dealership and they told me to bring it in. When I started to leave, the car would not shift out of park and bricked up. A towing service had to drag it out of my garage. My concern is that there is no limp mode or any way to switch to the gasoline engine when this happened. Had there been a fire in the battery, I would not have been able to get it out of my garage, putting our house and children at risk. Also, had it locked up on a highway, an accident could easily happen. After the dealership dragged it off of the rollback, they couldn-??t even get the car to move. They told me that they would have to order special tools to be able to get the car to move. Along with the steering recall that worked for about a month, the steering rack had to be replaced, and the failure of the electrical system, I feel like this car is unsafe to drive. Thank you.

- Johnson City, TN, USA

On my way to drop kid to school all of a sudden the car gave up power and shuddered with engine malfunction and I-drive malfunction warning. Check engine light came on. This is risky because another vehicle could have smashed into us if on highway or high speed. Research shows that a whole lot of people have this identical issue.

- Simpsonville, SC, USA

Warning Alert for Hybrid System Malfunction also I Activsense partially disabled notice on screen

- Litchfield Park, AZ, USA

Stopped at a red light on a busy 2-lane road. I-stop function turned the engine off. When the light turned green, releasing the brake caused a "Hybrid Battery Malfunction" error and the engine failed to start. We put the transmission in park and attempted to turn off and turn on the car with the push to start button. When we attempted to start the car with the push to start button, the car would not start. We were unable to shift into neutral to move the car out of the busy 2-lane highway and were blocking traffic for about an hour. The first tow truck to arrive was unable to move the car onto the flat-bed because the transmission was stuck in park and would not go into neutral so another tow truck was dispatched with a dolly. Our safety was at risk because we were stuck in an immobile car in busy highway traffic. A police officer arrived to help direct traffic around our disabled car. The vehicle is currently at the dealership and has not been inspected as of the time of this report.

- Eagleville, PA, USA

Mazda CX 90 PHEV. When charging on 110 standard outlet or 240v dedicated breaker - Chargepoint charger, the car onboard charger/inverter backfeeds a loud buzzing / humming back through the electrical wire to the electrical panel. It also causes a buzzing/humming in other appliances and causes led lights in the house to flicker. This is with a 100amp breaker panel and a new upgraded 200amp breaker panel. May cause electrical issues up to electrical fire in other areas of the home. Scheduled diagnostic test in vehicle 10/1/24, but other owners report same issue on Mazda CX 90 online forums.

- Whitesboro, NY, USA

The contact owns a 2024 Mazda CX-90. The contact stated that on several occasions while driving at various speeds, the message "Vehicle Failure Detected - Hybrid System Malfunction", "Possibility of Restricted Power Output", "I-Activsense System Malfunction", "Dynamic Stability Control Malfunction", and "Push button Start System Malfunction" were displayed. Additionally, the I-Activsense warning light was illuminated. The vehicle was taken to a dealer where it was diagnosed that an unknown software needed to be updated. The vehicle was repaired but the failure reoccurred. The vehicle was taken back to the same dealer where it was diagnosed that the connector to the battery needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 3,960.

- Holtsville, NY, USA

July 11, 2024 -?" Odometer -?" 7,604, Gas -?" Full, Electric -?" 19 Miles range - From work to Home, Receive the following errors -??Engine Malfunction, Have Vehicle Inspected-?? and -??Hybrid System Malfunction, Have Vehicle Inspected-?? warning lights come on. Cars behavior -?" Air conditioning motor running but not cooling air, Loss of power and car very sluggish (have to be careful at intersections), seems to maintain speed even when taking foot of gas and requires extra breaking, seems to be clunky when transmission upshifts/downshifts at times. When leaving work, did not seem to like being in EV mode even though fully charged (Chargers at work) and would switch itself out of that move and say unavailable. Outside air temperature 90 degree (Air Conditioning not working, very uncomfortable). This defect is dangerous and I serious concerns driving this car such as unpredictable loss of power when entering traffic and hesitation / unpredictability when hitting the accelerator. In addition, with the car maintain speed while not touching the gas pedal and requiring extra breaking is a scary. June 13 -?" Issue cleared and wanting lights were gone before I was able to take it in for service. July 25th -?" Recurrence of the same issue - Odometer -?" 8,162, Gas -?" Full, Electric -?" 14 Miles range - From work to Home, Receive the following errors -??Engine Malfunction, Have Vehicle Inspected-?? and -??Hybrid System Malfunction, Have Vehicle Inspected-?? warning lights come on. Cars behavior -?" Air conditioning motor running but not cooling air, Loss of power and car very sluggish (have to be careful at intersections), seems to maintain speed even when taking foot of gas and requires extra breaking, seems to be clunky when transmission upshifts/downshifts at times. When leaving work, did not seem to like being in EV mode even though fully charged (Chargers at work) and would switch itself out of that move and say unavailable. Outside air temperature 87 degree (Air Conditioning not workin

- Fuquay Varina, NC, USA

On July 15, 2024 this vehicle at 50 mph on cruise control suddenly flashed white warning words indicating problems with the cruise control and immediately thereafter started flashing -??hybrid malfunction-?? and to return to service dealer. At the time of the hybrid malfunction warning which was right after the quick cruise control warning, the engine operation, specifically the gas pedal no longer delivered power to vehicle, either electric or gas. Additional warning was to pull off to the side and stop and turn off vehicle. This occurred and vehicle was pulled to the side put into park and turned off. Waited approximately 3 to 5 minutes and restarted the engine which started in gas with no electric although there was electrical charge on the battery. Was able to continue to our final destination approximately 15 minutes later and no more than 10 miles driven. Hybrid malfunction was still visible on the dash to include the warning stating that vehicle needed to go to the service department. Approximately an hour later, vehicle was turned on again with the same warning about the hybrid malfunction, however, engine started in electric. Drove vehicle to dealership and stated what happened. Dealership the next day stated that this was a phantom code known by Mazda, but no problems associated with the code. Vehicle picked up per service advisors request two days later. Mazda dealership stated that headquarters had eyes on this particular vehicle. A day later after the pick up Mazda dealership requested vehicle be brought back for a -??DC box-?? repair. Dealership stated this process would take a week or thereabouts to replace this component. Vehicle currently in dealership service.

- Peyton, CO, USA

I was driving 65 mph and the hybrid system malfunction warning came up. Car dropped to 25mph - pressing the gas pedal would not increase the speed. Continued to coast with no acceleration until it came to a stop and shut off

- Clearwater , FL, USA