2016 Mazda CX-9 electrical problems

Filed Apr 23, 2025 · Driver assistance, Electrical · PA

Smart City Break Malfunction warning light appears while driving. Simultaneously the tire pressure warning appears. Also, at the same time, the temperature reads -20 to -40 degrees. Yes, vehicle is available for inspection. Fearful that car could randomly break while driving putting myself and family in danger since there is a malfunction. Mazda service center says the problem can’t be reproduced so there’s nothing they can do. The problem seems to appear when the outside temperature is 60 degrees Fahrenheit or higher.

Filed Oct 24, 2024 · Electrical · WA

Vehicle failed to turn off the engine while in park and I was unable to lock vehicle while engine was still running. The ignition button failed to work.

Filed Sep 9, 2024 · Electrical, Engine · NC

1. What component or system failed or malfunctioned, and is it available for inspection upon request? The entire electrical system is malfunctioning. All dashboard service lights (check engine, ABS, etc.) illuminate simultaneously, causing the vehicle to stutter and shut off while driving. The vehicle is available for inspection. 2. How was your safety or the safety of others put at risk? This issue has resulted in a dangerous situation, particularly when the vehicle lost power on the highway with my young children aboard. This sudden loss of control could have led to a severe accident. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? Mazda’s service department has not been able to reproduce the problem despite multiple visits. I have provided video evidence, but no conclusive diagnosis or resolution has been achieved. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? Mazda’s authorized technicians have inspected the vehicle several times, but no substantial action has been taken. The vehicle has not been inspected by police or insurance representatives. 5. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? All dashboard lights come on simultaneously without prior warning. The symptoms have been random and intermittent over the past few months. Given the ongoing risk, I request an immediate replacement of my vehicle. Please confirm receipt of this complaint and provide a plan for replacement. Thank you for your prompt attention.

Filed Apr 12, 2024 · Electrical, Seats · MA · fire

My seat warmer caught fire and burnt a hole through the seat.

Filed Sep 19, 2023 · Acceleration, Electrical · VT

As I am accelerating to merge onto the highway from an on-ramp, while the gas pedal is depressed, I will get a series of sensor alerts simultaneously (city brake malfunction, park assist malfunction, lane assist malfunction, etc.) and my gas pedal becomes non-functional at 60-70mph. It is terrifying especially when there is other traffic around my vehicle. This exact issue has happened 6 times within the past 12-18 months at seemingly random intervals but always when I am accelerating onto the highway at 50-70mph. I typically pull off to the side of the highway and turn off the vehicle. After letting it sit off for ~30 seconds, I turn the vehicle back on and all of the sensor alerts have cleared and the vehicle functions properly including the gas pedal and I am able to rejoin the highway. I took the car to the Mazda dealership in my state of Vermont a few months ago to have them diagnose and address the problem. They had never heard of this issue and were unable to find the root cause or fix it. Please help, this is dangerous!

Filed May 19, 2023 · Electrical · NY

UKNOWN-Seat Heating system in my car gets too hot to the skin where it burns the skin if not turned off. I’m not able to use it often because even on low setting it gets extremely hot.

Filed Feb 16, 2021 · Electrical, Seats · 46,000 miles · MI

- the car was purchased new from a mazda dealer in may 2017 - the driver side cushion heater failed in march 2020. - the passenger side cushion heater failed in november 2020 - both sides exhibited the same problem despite the fact that the usage of the passenger side was about 25% of the driver - from the time the cushion heaters failed, we observed random overheating of the back heaters and recorded "hot spots" of up to 149 deg f (picture attached) - while the cushion heaters don't operate, the backs get too hot for occupants (attached picture of skin reaction) and at one point the passenger side partially melted a plastic shopping bag - mazda responded to the complaint that the car was outside of the 3-year warranty (expired in may 2020) and there were no related recalls so the company was not interested in any testing or investigation of the problem attached: - picture #1: temperature ir readings - picture #2: effect of the overheating on one of the occupants

Filed Dec 18, 2019 · Electrical · 67,000 miles · TX

With no warning the smart brake system malfunction and the front radar system malfunction warnings come on and I am unable to use the cruise control. In addition the parking brake light comes on and the parking brake is not on as I am driving.

Filed Sep 30, 2019 · Electrical, Engine · 17,061 miles · LA

11/16/18 towed for inoperabilty. Stuck fuel injector/ ruined engine. All panel lights came on. Kept car for 57 days. Fuel injector # 1 failed. We were driving onto interstate. While working on car, exhaust stud broke off into turbo charger housing. Drilled out and rethreaded took back to mazda dealer to c/o about swooshing noise in r dash said they did not hear. This occurring with acceleration 2/7/19 while driving out of state on interstate , swooshing noise r dash lost acceleration while passing. St peters , mo dealership had to put back on the turbo hose & clamp 5/6/19 back home and again heard the swoosh noise on acceleration. Dealership replaced gasket to turbo charger / air leak with smoke test 9/14/19 again became inoperative while driving out of state immediately after passing large truck, lost acceleration with pedal to carpet. Was told in limp mode smelled something in car compartment. Stuck on narrow county road. Limped to turn off. On inspection by tow truck person, stated was pouring gasoline from front of car. 'this could have caught fire due to 90+ degree temp in tex. Fuel injector # 4 exploded mechanic on inspection told serv mgr this car was put back together in a shoddy manner. The hose to fuel injector had previously been routed wrong when engine replaced. Now waiting on malfunction of fuel injector 2&3. Scared to drive car. C/o to mazda customer rep. His response well u have warranty until 4/2024. That is b/c we took extended warranty. Hollingsworth mazda in baton rouge, la closed reason unknown. *tr consumer stated error to vehicle speed instead of 10-15 MPH.

Filed Jul 23, 2019 · Electrical, Engine · 30,400 miles · VA

In 2017, my car shut off two times, without warning, one time at a stop light and again on the highway going 70mph. We were accelerating at the stop light when it shut off and then driving on the highway. Took the car to the dealership and 72 codes came up. They said it was the dvd players (that they sold and installed!!!) that were causing the issue. They supposedly 'fixed' the issue. Now in july 2019, the car shut off an additional five times. Three times while driving and twice in a parking lot. We were on a highway again when the car just shut off with no warning, lights on the dash started flashing, and the power steering went out one of the times. My husband had to put it in neutral, coast to the shoulder, come to a complete stop and then attempt to start it each time. Cars were dodging us every time and luckily we weren't hurt. My children were in the vehicle every single time. We had the car towed to the dealership where 68 codes came up. This time they're saying it's the fuel pump and that they can 'fix' it, but can't 100% guarantee it won't happen again. We were put in a life threatening situation every time, without warning, after giving the dealership a chance to fix it. The car is under three years old and only has 30,400 miles on it.