Electrical System Problems of Mazda CX-5 - part 2

Critical malfunction- causing parking brake malfunction, anti lock brake system malfunction, dynamic stability control malfunction, disabled blind spot monitoring, keyless entry system malfunction, front brake / and obstruction warning disabled, keyless entry system malfunction, air bag system and seat belt pre-tensioner system malfunction. Vehicle not starting. /dead. Sat at dealership service where purchased for 6 days saying they could not test bc they did not have a battery tester- magically when I complained they found one- and say everything checks out ok. Vehicle is not safe!!!! if this malfunction happened while driving I could have been killed. The dealership refuses to anything g but say it’s ok- and it’s not a lemon. I cannot put my life at risk and they will not guarantee it will not happen again- or say why it happened- other than check g the battery.

See all problems of the 2025 Mazda CX-5 🔎.

The vehicle reboots the screen/infotainment system while driving. The dealership has updated the software and replaced the screen (screen was at my cost). They reset the codes and it comes back. This is a safety hazard as it could cause non compliance with the fmvss in regards to rear-view cameras being required. There is currently a settlement in place under a class action.

See all problems of the 2020 Mazda CX-5 🔎.

While driving down highway the car suddenly will stop accelerating. Once this occurs the check engine light will turn on and shortly after the battery light will turn on. The car will not move and the ac will then stop working. The first time the car was brought to dealership (under warranty). They had to replace battery, fuel pump and fuel level indicator. They stated the fuel pump was broken as was the fuel level indicator. They were able to reproduce the problem prior to fixing it the first time. Less than a month after the car was repaired the exact same issue happened. This is a significant safety concern as I was driving on the highway with a [xxx] child in the back seat when the car stopped driving the second time. I was barely able to get over a lane and off the road before the car stopped driving. The ac then stopped working on a day where the feels like temperature was over 100. I had to lay wet cloths over my infant to prevent her from overheating while we waited for aaa and a family member to reach us. The inability to accelerate/sudden stopping of the car while driving on a highway with a speed limit of 70mph posed a significant safety risk to my life, my child’s life and potentially other cars if they weren’t able to stop. I had to wave frantically at the car in the lane next to me so that they wouldn’t hit me. No warning lights came on until after the issue (stopped accelerating) occurred. The dealership (Mazda) now has the car again and will be inspecting it. I have files from the first incident however they are in the car. Once I get my car back I can send over the reports of what they replaced/work completed. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2022 Mazda CX-5 🔎.

Infotainment system went dark and I cannot get it to come back on. I’ve read that this has been an ongoing issue and is covered in Mazda cx5 models up to 2020 thru a class action lawsuit, but my one is a 2021 (manufactured we’ll before 2021 though) with a virtually identical system.

See all problems of the 2021 Mazda CX-5 🔎.

The info uni in the car constantly resets itself. It happens when gps is activated, parking, listening to directions, pretty much at all time especially in crucial moments. Nav center doesn't even load at times, this causes unknown information of speed limits and streets.

See all problems of the 2016 Mazda CX-5 🔎.

The infotainment system is experiencing the "ghost touch" problem already identified by Mazda and there has already been a class action lawsuit won regarding this problem. I was not aware of this class action lawsuit or I would have participated to have my system repaired. My infotainment system is completely unusable and I have been told it is over $500 to repair/replace. I am the original owner of this vehicle. The system continuously beeps and changes all settings while I am driving. If I am using navigation, the screen switches to something else so that I can't see where I'm supposed to be going, causing undue slowing and or braking in city traffic. This is a safety problem. My infotainment system continuously goes into the settings and changes the navigation guidance volume and the car yells at me that, "navigation will be at this volume. " this has startled me and caused me to either swerve or brake abruptly due to being yelled at with out warning while alone in the vehicle. This is a safety issue. As a female who drives by alone 99% of the time, I have my doors set to lock and unlock in a specific manner to keep me safe. The system randomly resets all of these settings while I'm driving so I have no idea if the doors will be locked or unlocked and whether I will be safe when stopping in city traffic. This is a personal safety issue and causes undue stress. The system calls and hangs up on my family repeatedly, making them think that I am in danger or hurt. They try to call by and get hung up on. This is a safety issue because it causes distracted driving because I am focused on that problem instead of the road. All in all, the whole system is a safety problem and needs attention, especially since Mazda has already admitted to the problem.

See all problems of the 2019 Mazda CX-5 🔎.

Car “died” while idling at a traffic light. It started but would not start several hours later and car was towed to mechanic. Diagnostics “determined “after several days that car needed an ecm. Ecm was ordered and replaced, along with the battery. This took several weeks, in the meantime, I had to rent a vehicle. Vehicle picked up on may 29th and driven 250 miles and car sputtered, hesitated, slowing down in heavy traffic at high speeds on highway, putting other drivers and myself in a very unsafe situation. Several days later this happened again while traveling back home, again, at highway speed putting other drivers and myself in high risk situation. (this happened several times during both trips. ) as I was focused on the road, I did not see if any messages were displayed. After returning home, the mechanic was informed via voice mail and again via telephone. The following morning (June 2), the car sputtered, hesitated to accelerate at low speeds and died while driving to repair shop (battery indicator illuminated as I was pulling over). Car has been towed again to repair shop.

Keyless entry stopped working, key fob battery replaced as well as car battery. Coolant issues. Heater core and sensors.

In 2024 I started having problems with my battery replaced it 3 times last time with a Mazda battery per Mazda advice. The car started to jerk while driving took it back to Mazda said it could be fuel injectors. They cleaned them and problem persists. Took it back they cleaned purve valve and then I broke down while leaving on [xxx] . Called service dept called police since it was in the middle of the blvd. And in traffic. We were lucky no one hit us. They took my car gave me a loaner had it for 10 days. Couldn’t find any problems. Then in 4/2025 it completely died at my home I called Mazda they were able to jump the battery and had it for a month. Couldn’t find any problem. And now we are in 5/2026 my car was in my drive without out being driven for 3 days and now is dead once again. But it is so dead that I cannot open with fob and dash board is black. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

This is a complete electrical system failure. My screen continues scroll all systems fails. At least it is not draining the battery again. I have had to replace the battery 2 times in the last 6 months. Maybe carmax sold me a "lemon". . I received a recall notice, however when I spoke with the service department at the bob Mazda dealership in carlsbad and they told me that the recall on my vehicle is closed. I can come in for repairs, but at my own expense. I have only owned this vehicle for 6 months in which 2 months I was in the hospital recovering from a major surgery. When I get in my car and start it, if it starts the "blue" light is on every time, which is apparently thermostat. After about 20 minutes or so the light turns off, sometimes 30 minutes. The next part is the scrolling malfunctions. It lists about everything on the car. I am [xxx] and live in baja. I live in a very safe, gated with a security guard neighborhood, however I am scared of going any due to my car issues and being stranded. I also really need to cross the border to see my doctor but I am afraid. When you have to replace 2 batteries in 6 months and I have only driven under 5,000 since I purchased the car. Mazda needs to make me whole. My car also only has 24,000 and when I bought it had20,000 miles. There is something seriously wrong, actually multiple things are wrong with my 2019 Mazda. A person should never be afraid to get in the vehicle due to safety issues. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

While driving, the infotainment screen went crazy! it randomly changed screens rapidly, and the navigation voice started talking loudly about changing volume level, and repeatedly. Very distracting and dangerous.

Summary of events: purchase date: 05/27/2023 coolant warning: in January 2025, I received a coolant temperature warning (code p0126) indicating insufficient coolant temperature. Repairs: I brought the vehicle in for repairs on 02/15/2025 for thermostat and related parts. The repairs were completed by 02/17/2025. New warning: on 03/18/2025, I received a high coolant temperature warning. Upon inspection, coolant was nearly empty, and I found coolant contamination in the engine bay. Notification to dealership: I emailed hennessy Mazda on 03/19/2025, but after no response, I filed a claim with Mazda headquarters on 03/20/2025. Only after that, they called me and instructed me to bring the vehicle in. They claimed that after replacing the faulty parts and cleaning the engine bay, the car was ready for pickup. (while they assert that all actions were completed on 03/22, based on the fact that the car door was opened approximately five times in April, it can be inferred that the necessary actions were likely completed in early April. ) concerns: coolant leak: the coolant leak persisted for nearly a month, likely causing damage to internal components due to engine overheating. Electronic contamination: the leaked coolant likely contaminated sensitive electronic systems, wiring, and connectors, potentially leading to long-term failures due to the conductive and corrosive properties of modern coolants like Mazda fl22. Long-term risks: hidden corrosion inside connectors and wiring. Potential for electrical failure, sensor malfunctions, and further degradation over time. Hennessy Mazda is currently addressing only the visible issues and claiming the car is now functioning properly, while attempting to shift the long-term and hidden risks onto me. I am requesting a vehicle replacement or compensation due to the safety and long-term reliability risks posed by the unresolved coolant leak and contamination.

See all problems of the 2023 Mazda CX-5 🔎.

We had another Cx-5 in the back that we used to test whether or not it was either the throttle body or the bcm ( body control module ) or the pcm ( power control module ) not working that is causing your vehicle to not wanting to turn on the throttle body passed we transferred it over from vehicle a ( being the donor ) to vehicle b (being your vehicle ) and it was still doing the same thing which it would crank but not fully turn on and that is how we ruled that part out the bcm we also transferred over from vehicle a to vehicle b and same thing it would crank but not fully turn on this is what the mechanic at Mazda collision center of irving stated: the pcm has power and is communicating with everything else in the vehicle. If it was the pcm then nothing would work and we wouldn't be able to even cycle the power as if we were going to turn on the vehicle we brought this over to our Mazda foreman and we showed him the codes it was throwing and what was going on and explained everything and he did tell us that it could be the main harness that is causing all of this he is not for sure just because he is not the mechanic involved in this but he said that is a good start. I am uncertain exactly what is wrong with the vehicle. When I took it in to be serviced, it worked. The mechanic then said he couldn't work on it anymore after trying to fix the body work because the electrical system had failed. I then had it towed to Mazda to see if they could fix the issue. I had originally took it in because of a minor fender bender. I am unclear as to why it has taken four months and my car still doesn't work and I do not know how to afford buying a car to replace it when I cannot trade it in since we cannot resolve the electronic portion through insurance.

I purchased this vehicle as a used car from a dealership. On my way home, the infotainment panel began to shout at top volume that this is the volume that navigation would be set at. The volume was so loud that it was startling, and it continued on until I had to pull over. I contacted the dealer, but they offered no assistance. The car continues to control itself at the panel ferning with the use of android auto so that you can't use your phone gps for directions. The radio will control itself, changing stations, making loud beeps, and turning the volume up. There is no way to stop this feature because you can't turn the system completely off while the car is on. I can find no way to fix this on my own. I have tried resets, but have seen ample information about other people having this problem online. This does not seem to be an unknown problem and I don't know why there has not been issued a recall because it's very dangerous.

I bought this 2020 Mazda Cx-5 sport 2. 5l all wheel drive from a big dealership on July 31, 2023. I started having issues with epb (electronic parking brakes) in February 2024. When I put the e-brakes on, the yellow parking brake light and the red brake light would come on. Seems like they would engage and disengage just fine except those 2 lights would stay on no matter how many times I tried turning the e-brakes off. I put a new battery in because of some research I did to no avail. Tried putting it in service mode then taking it off service mode. . . . . . Which did work for a couple of months. Then the problem reappeared and the two lights came back on. Sometimes you hear the e-brakes retracting on the rear right side only. And you can smell the brakes from heating up. On 2/26/2025 after getting out of work, I got in my car, turned it on and boom the brake lights are on again. I tried to drive and noticed the e-brakes were engaged. I didn't do it because I don't use the e-brakes at all for fear it would get stuck on and leave me stranded. I have been dealing with this for months and I am so frustrated. This car is only 5 years old. It shouldn't be having e-brakes issues. I've been doing a lot of research and found out that a lot of Mazda owners are having this very same problem. Mazda is very aware of this issue and has known about it for some time, but refuses to do a recall. I’m afraid to drive the car for fear that the e-brakes would engage while I'm driving in the highway and cause me to have an accident. This is a safety issue that needs to be addressed. I don't know what else to do. One thing I do know. . . . . . If Mazda doesn't fix this issue, I will never buy a Mazda again and make sure my kids never buy a Mazda either.

Small amount of weight such as keys or phone is triggering the occupant sensor in the front passenger seat. This issue just started and I am finding a lot of complaints regarding this.

Forward braking safety sensor was on transmission after braking check engine light . Was driving car from work it lost all power . And those warning ?? light indicators where on . Car wouldn't go over 15mph . Took vehicle to Mazda and dropped it off as my husband requested information do so . Mazda called say diagnostic saying it needed plugs ,coil packs serpentine belt and adjuster pulleys replacement. I called my husband he's a mechanical engineer he said no way it needs a tune up that early. He requested information go get the car as he flew home from working outta town. We took it to scooter's place certified mechanic in indian head MD . Scooter's place diagnostic scan said completely the opposite. Say it was the cars brain aka cpu send false signals causing misfire to all components of vehicle . He change one spark plug and car ran normal. He told us it wasn't a fix it was cpu and no matter tune up or not . The computer was the issue. I went back to passport Mazda in suitland maryland to give them second opinion issues the gm wouldn't give my money back for false diagnostic readings and refused to listen or hear what I had to say I was to upset to continue and decided to leave . He kept saying he wasn't a technician so he doesn't know but was explaining technician issues that were incorrect I have both diagnostic detail paperwork which I will attach with report.

My infotainment display has a prevalent ghost touch issue that causes majors distractions while I'm driving, and no warnings on when it'll happen. The ghost touch will end my navigation, end my calls or put them on hold, call random people in my contacts, turns on/off the music, changes the volume, changes various settings (sometimes safety settings), switching back/forth to different things, etc. It used to only happen when the car was not moving or I'm parked (as the touchscreen is only supposed to be available then), but now it's happening even when I'm driving on the freeway. I used to try correcting/fixing whatever by using the knob control, but the problem can become so severe that even when I use the physical knob I can't gain control over it. I can't turn off the infotainment display because the ghost touch just turns it back on! I brought it into my local Mazda dealership for regular servicing and decided to ask about it, but they're quoting me over $800 to fix it. They said it's a common issue they get all the time and it's something to do with a faulty screen?? not too sure what exactly, but a friend of mine said he had the same issue and the issue was too sporadic he decided to disconnect the touch screen altogether. It's too much of a distraction to deal with while driving, even for quick trips to the store, etc. It causes cognitive, visual, and manual distractions. . . These faulty screens are putting us all at a higher risk of being involved in an accident by taking our attention away from driving, even for just a split second.

I have a sensitive key fob that releases my hatch without my knowledge or intention. Twice my hatch opened causing damage to my hatch inside my garage. I’ve have read many complaints about the same issue, dating back years and some having their hatch open while parked outside. I have contacted the dealership and the corporation all saying there was a nothing that can be done. This is a major concern since the key fob is so sensitive and can activate in only a second to touch.

See all problems of the 2024 Mazda CX-5 🔎.

The touchscreen digitizer on the Mazda connect infotainment system has developed a known defect causing constant phantom/ghost touch inputs. The screen registers random touches without any physical contact, causing the system to navigate through menus, change vehicle settings (including safety-related settings such as blind spot monitoring and heads-up display), exit navigation mid-route, change radio stations, and initiate phone calls to contacts without driver input while connected to apple carplay. This is a significant driver distraction and safety hazard. When the system begins making random inputs, the driver must divert attention from the road to attempt to regain control of the infotainment system or end unintended phone calls. The issue occurs most frequently when the vehicle is stopped or at low speeds but also affects the system while driving. This is a well-documented hardware defect affecting 2017-2020 Cx-5 models, acknowledged by Mazda under TSB 09-003/22. The cause is a failing touchscreen digitizer, not a software issue. Mazda has not issued a formal recall despite widespread reports. The component is available for inspection upon request. The vehicle has not yet been inspected by a dealer for this specific issue. No warning lamps or messages preceded the failure — the phantom touch inputs developed gradually and have worsened to the point that the infotainment system is nearly unusable. Current mileage is approximately 60,000-80,000 miles.

The engine light constantly appears along with the "schedule maintenance soon" light. Taken to dealership many times within my 3 month warranty and no definite reason was given. The vehicle rides very bumpy though sway bar was inspected and supposedly repaired by dealership during my 3 month warranty.

The cylinder head on my 2018 Mazda Cx-5 developed cracks on the exhaust side, leading to significant oil leakage onto the exhaust manifold. This has caused engine damage and safety concerns. The vehicle is currently at a Mazda dealership, where the issue has been inspected and documented. The component is available for further inspection upon request. The oil leaking onto the exhaust manifold creates a serious fire hazard due to the high heat generated in this area. Additionally, the vehicle experienced burning smells and visible smoke coming through the air vents, which could impair visibility or cause distraction while driving. These conditions place the safety of myself, my passengers, and others on the road at risk. The issue has been confirmed by a Mazda dealership. They provided a video showing oil actively dripping from the cracked cylinder head and stated that the engine requires a full replacement. Mazda dealership video: [xxx] this video contains the engine inspection findings conducted at the dealership during my recent visit. It clearly shows the damage and highlights the issues identified. The vehicle has been inspected by the Mazda dealership service team, who identified the cracks in the cylinder head and documented the oil leakage and related engine damage. There were no warning lamps or messages on the dashboard prior to the failure. The symptoms began with a noticeable burning smell inside the cabin, followed by a slight mist coming out of the air vents and smoke from under the hood. Oil leakage was later observed on the ground, and the coolant level appeared empty. I’ve received a video inspection of my vehicle from the service center on March 7, 2024 with no concerns at that time, which you can view here: [xxx] . This link leads to truvideo, a platform that many dealerships use to share service videos with customers. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2018 Mazda CX-5 🔎.

The steering and braking systems on my vehicle malfunctioned after jumping my vehicle when the battery drained too far to start, or even power my cars baseline electrical systems. After jumping my car, I started backing out of my parking spot and when I turned the wheel it very violently jerked in a manner that could have hurt me if I'd been holding onto the wheel tighter. Around this same time I believe I recall the brakes automatically applying and halting the vehicle. I was too far out of my parking spot when this began occurring and had to try to maneuver into a different one, during this attempt both of the conditions described above reoccured several times. I eventually noticed that it only seemed to trigger when the wheel was at more extreme steering angles, by keeping the steering angle lower I was eventually able to maneuver into another spot without triggering the issues. After parking and letting the car run for a bit to recharge the battery I no longer experienced these issues. There were several warning lights related to roll stability control, lane departure monitoring before pulling out. The following warnings were present, but I'm unable to recall whether they displayed before I first hit the issues: Smart braking malfunction, power steering malfunction, transmission malfunction, check engine light. The vehicle has not yet been inspected by anyone, however I was able to find evidence of other people complaining about what sounds to be the same issue going back several years online. [xxx] [xxx] [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

With a heavy downpour of rain the bsm flashes off, then after sitting for a few hours the car battery dies and the key fob is not recognized in the vehicle. Took it to a dealership and it stopped doing it. Code that are thrown have to do with some computer communication failing. I have had the car die on me 4 times in the last year that I’ve had it.

See all problems of the 2015 Mazda CX-5 🔎.

"ghost touch" issue on my cars touch screen operates by itself or doesn't respond. I was driving down a dark road when it went black, the screen had adjusted its brightness down to zero! the radio will change stations then freeze and the manual controls won't even work.

Display went dark and did not display. This is not the only time it happens. It acts like someone’s touching the screen even when in motion. It prevents the reverse camera from displaying.

Twice now, my 2017 Mazda Cx-5 stalled on the highway with a check engine light popping up--both times was driving around 60-70mph for a couple of hours and had about a quarter tank of gas left. The first time, no code was found, but the second time, after a deeper diagnostic, the dealership found a p0192 code. After reading here and many other places online, based on the code and the car's behavior, it really sounds like the denso low-pressure fuel pump is to blame; that's the source of the recall for 2018 and 2019 Mazda Cx-5s experiencing this same issue [xxx] ). If the 2017 model also uses that fuel pump, why isn't it included in the recall? if this dangerous and erratic car behavior is due to a faulty part, it really should be covered by the recall. Shame on you, Mazda. Lives are at risk. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2017 Mazda CX-5 🔎.

Infotainment screen malfunctions, pressing buttons by itself.

Just got a oil change. Told my battery is almost dead. Upon looking up information I found a letter for recall for 2021 Mazda cx5 for dealer rework 41 telematics communication unit concern. I called the dealership and they are refusing to fix the problem. Looks like its just a software update is needed. My car only has 24,666 miles and according to the letter should be fixed. [xxx] I bought the car used in April and did a search for recalls prior to buying the car. There is non on Mazda website or VIN search. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Car failed while on highway driving 60 mph with the engine and power steering turning off instantly. A day prior the dash was blinking warnings. Mazda of lodi replaced the entire transmission plus other parts. Just made it under warrantee. Would have cost 5k once expired. Was told half the fleet of 2019 were recalled but not the second half of production for some reason even though they both experience the same failure. . Also had 22,000 miles at end of the. Something smells in denmark.

There is a known issue of "ghost touching" on the infotainment system on 2017-2020 Mazda's. The ghost touching causes the infotainment center to randomly self-select options on the screen, which is highly distracting. The following are experiences I've had while driving (sometimes going 70mph on the interstate), where my infotainment center begins to make selections on it's own: unpausing paused music making random phone calls opening text messages and selecting the reply button flipping between screens continuously ending phone calls this is extremely distracting and dangerous. Mazda is aware of this issue. I had my screen replaced in 2020, and replaced with another faulty screen that I now have to get replaced again.

This car has an issue with 'ghost touches' on the infotainment screen. We had it replaced under warranty in January 2020, and the same issue is happening again. Searches online show this is a widespread problem and Mazda wants to charge $1,000 to fix it this time. It is a distraction, turns music on/off volume up/down and can cause dangerous unexpected distractions.

On [xxx], I was the operator of a 2019 Mazda Cx-5 in los angeles, California. I parked the vehicle on an incline on or around [xxx] in los angeles, California, and then exited the vehicle. The vehicle remained stationary for some time, until it suddenly began rolling backwards at a speed that pushed me to the ground while I was getting my things from the passenger side door, causing me serious injuries. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

While driving through town the braking system malfunctioned and the car came to a stop in the middle of the road with messages on dash saying the Smart city braking support was malfunctioning as well as brake assist. Engine light came on as well as traction control light right after the car coming to a sudden hard braking stop. Drove straight to shop to check engine code which was p0882. I am so afraid of this happening on the highway with my daughter in the car. There is a recall for this system but my car isn’t under the recall so I'm sure there are others that are having the issue but aren’t covered under the recall either.

Mazda infotainment system experiences ghost touching. It would operate on its own and exit applications like navigation on its own. Mazda is aware of the issue but won’t issue a recall. This can be a safety hazard when the system exits out of navigation in the middle of nowhere. The system would also make calls on its own which would cause a panic to the driver who is distracted trying to end a call they never placed.