2015 Infiniti Q50 Complaints

VISIBILITY — Filed 09/14/2026

I was parked in my garage getting ready to start my car and the glass in my moonroof spontaneously shattered. There was no object that hit it because I was in my garage. It sounded like a gunshot. The glass flew upward and the glass looks like it shattered into a little volcano on the edges.

POWER TRAIN,UNKNOWN OR OTHER — Filed 08/08/2026

While operating the vehicle, the transmission suffered an abrupt failure resulting in Diagnostic Trouble Code (DTC) P0720 (Output Speed Sensor Circuit). Further diagnostic inspection revealed a complete internal failure of the integrated valve body assembly, which houses the Transmission Control Module (TCM), solenoids, and output speed sensors. The failure caused an immediate loss of gear selection, restricting the transmission to 3rd gear ("limp mode"). Attempting to accelerate beyond 3rd gear causes violent vehicle shaking, severe hesitation, and an inability to maintain traffic speeds due to the TCM losing signal input from the speed sensors and solenoid circuits. This total valve body/TCM failure creates a critical safety hazard. Sudden restriction to 3rd gear without warning on highways or during turn movements leaves the vehicle unable to match surrounding traffic speeds, creating an immediate risk of a rear-end or side-impact collision. The vehicle has been strictly maintained according to manufacturer schedules. Because Nissan/Infiniti designed the TCM and speed sensors as an integrated unit inside the hydraulic valve body, a sensor failure requires replacing the entire valve body/TCM unit—a repair quoted at over $3,000, with complete transmission replacement exceeding that cost. This valve body/TCM failure mode is widely documented among Infiniti Q50 owners sharing the RE7R01A 7-speed automatic transmission platform, indicating a widespread electronic and mechanical defect that threatens driver safety.

STEERING — Filed 06/02/2026

After starting the car the steering wheel jumps off center and the steering is all over the place. have to start the car again and the steering wheel jumps the other direction. I strongly suggest this is exactly what the June 13, 2016 NHTSA campaign number 16V43000 the software may reduce steering ability and increase risk of crash.the direct steering system my experience an error at vehicle start up altering the vehicle steering responsiveness and turning radius. Exact problem with this car. This car has been recalled for the driveshaft break NHSTA 24V470000

STEERING — Filed 07/21/2026

DIRECT ADAPTIVE STEERING EXPERIENCEING AT START UP ALTERING THE VEHICLES STEERING AND RESPONSIVENESS AND TURNING RADIUS DOES NOT WORK AND IS INCREASING THE RISK OF A CRASH. VERY UNSAFE TO DRIVE. THERE IS A RECALL 16V430000 ON THIS VERY PROBLEM. HAVE BEEN TOLD BY DEALERSHIP AND NISSAN MOTORS THAT MY CAR IS NOT ON THE RECALL AND I WILL HAVE TO PAY MY SELF TO GET FIXED AND TO SEE IF THAT IS THE PROBLEM. READING THE NHTSA CAMPAIGN NUMBER:16V430000 THIS IS THE EXACT PROBLEM WITH THE DIRECT ADAPTIVE STEERING SYSTEM ON THIS CAR. I BELIEVE THIS SHOULD BE COVERED BY THE RECALL!

POWER TRAIN,VEHICLE SPEED CONTROL — Filed 07/07/2026

While driving my 2015 Infiniti Q50s, the transmission suddenly suffered a catastrophic electronic failure, causing the vehicle to immediately drop into "limp mode." This resulted in a sudden and dangerous loss of acceleration while operating in traffic. A diagnostic scan revealed trouble codes P0500 and P0720 (Output Speed Sensor circuit). However, following Infiniti's official Technical Service Bulletin (TSB ITB19-040), the actual failure was the Transmission Control Module (TCM), which is permanently integrated into the transmission control valve body inside the transmission. Because the speed sensor cannot be replaced independently of the integrated module, I was forced to pay out-of-pocket to replace the entire transmission control valve body assembly and have a dealership program the new unit. This is a widely documented, premature failure on this vehicle platform that creates an immediate highway safety hazard when the vehicle drops power without warning.

STEERING — Filed 04/01/2026

DAS issue that I have been dealing with for two months now, issue is still not resolved even after taking out a personal loan for 6k to fix the modules at Douglas Infiniti, waited weeks for the modules, they replaced the modules, did the calibration but a new issue is happening where I'm losing control for a split second and the car would either pull to the left or right egregiously. I took it to back to Douglas Infiniti for the issue, they found code C13E9-00, cleared the code and did the calibration again only for the issue to happen again once I was close to getting home. Spoke with Martin the advisor and he is saying that he thinks its an issue with the rack and pinion and not a software issue. I bought the rack and pinion from infiniti's wholesale direct website, the rack and pinion came from Infiniti of Winston Salem, so it's an OEM rack and pinion, he said I should take it back to the shop where I got it installed and have them check their work, even though they were able to calibrate the system once the new modules were installed, certify their work and give me back to the keys to the car only for the issue to happen again. Took it back to DriveWorks Auto Center in Union, NJ and they couldn't find any issue with the rack & pinion, said I need a wheel alignment thought, went and got a wheel alignment. Driving home from work yesterday on [XXX] going down the hill and the car steering went out momentarily and the car started pulling to the right, straightened the wheel and now I was swaying to the right. I have a case open with Infiniti Consumer Affairs INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

POWER TRAIN,ELECTRICAL SYSTEM,ENGINE — Filed 05/14/2026

The valve body on these cars are useless. Driving down a highway and cant shift out of 3rd gear almost had a car re-end me. Today I am driving and the ECU is not responding I see the check engine light on then I'm like not again. This would be the 3rd valve body I replaced. First I replaced the whole transmission thinking that is what I needed and advised that the valve body and the transmission are one. Yet no they come in parts. Anyways today I am waiting to get home, but the car is not reading my key fob why? Then the ECU and code U0100 is popping up. Something new and turns the car off. The shifting that happen earlier was just a light bulb of I already knew what is wrong. I felt the car shift with a hunch so I looked at my dash board and saw the check engine light again and was like not again. Please not again. Now on the dash board I see AWD and chassis issue. Then online I am told electrical problem and or ECU module not reading correctly. Like what is up with these push to starts. They are becoming a headache. I need to know just why I am replacing my valve body now for the 4th time???? This all can cause an accident that my car randomly slows down.

AIR BAGS — Filed 07/16/2023

I was in a car accident during the summer, I was driving at speed limit when I came out the curve the car started sliding, and I went off the road and roll over at 4 times and ended up in a ditch upside in some water, but NO AIRBAGS went off I have pictures showing so, I try to tell the dealer I bought it from Car Max and even my insurance but no one seem to care but now I found this page. I also had a police on site and no ticket was issued to me since no proof of me driving recklessly I did have a police report but I can’t find it since it was back in the summer

AIR BAGS — Filed 07/07/2023

The contact owned a 2015 Infiniti Q50. The contact stated that while driving approximately 5 to 10 mph, she experienced a diabetic medical emergency. The driver was unable to feel her legs or feet to stop the vehicle and crashed into the rear of an unknown SUV. The air bags did not deploy. The air bag warning light illuminated at impact. A police report was filed. The driver was taken to the emergency room by ambulance. The fire department was on the scene, but there was no reported fire. The vehicle was towed to a tow lot. The vehicle was later towed to a collision center. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The vehicle was deemed a total loss by the insurance company. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 50,000.

ENGINE AND ENGINE COOLING,POWER TRAIN,SEAT BELTS — Filed 03/10/2023

The contact owns a 2015 Infiniti Q50. The contact stated that while driving approximately 50 MPH, the vehicle began to overheat and smoke was present coming from under the hood. After stopping to inspect the vehicle the contact opened the hood and flames were present in the engine compartment. The contact immediately extinguished the flames using water. The vehicle was later towed to the local dealer. The cause of the failure was not yet determined. The contact indicated that prior to the fire the vehicle had also experienced transmission shifting failures and the front driver's side and passenger side seat belts were locked in the retracted position and could not be used. The cause of the failures was not determined. The manufacturer was not notified of the failures. The failure mileage was 80,000.

STEERING — Filed 10/02/2022

I was driving and tried to turn but had lost complete control of the steering and hit the curb infront. Luckily i was only going 5-10 MPH so the impact was not terrible. My biggest concern is a lot of times my mother drives that car who is permanently disabled in one hand so I can only fear what might happen if she was the one driving the car.

STEERING,AIR BAGS — Filed 07/16/2020

WHEN I BOUGHT MY 2014 INFINITI Q50 I PUT IT ON THE ROAD AND THEN I STARTED RECEIVING RECALLS. I ALSO HAD SEVERAL LIGHTS ON. I BROUGHT IT BACK TO DEALERSHIP THEY DID SOMETHING LIKE CLEARING THE LIGHTS WITHOUT EVEN LOOKING AT IT. 45 DAYS AFTER I BOUGHT THIS VEHICLE I WAS IN A SERIOUS MOTOR VEHICLE ACCIDENT. I ALMOST DIED AND I LOST MY SPLEEN. ONE OF THE AIRBAGS DIDN'T DEPLOY WHICH WAS THE REASONING FOR LOSING MY SPLEEN. I BELIEVE MY STEERING LOCKED UP AND ENDED UP HITTING GUARDRAIL. TOTAL LOSS. I LOST 4,000 BECAUSE OF THIS ACCIDENT NEVER MIND I ALL MOST LOST MY LIFE!!! THIS ACCIDENT HAPPENED ON THE HIGHWAY.

SERVICE BRAKES — Filed 07/25/2020

PLACE THE CAR IN REVERSE TO BACK OUT OF A PARKING SPACE. WHEN I GOT TO MY STOPPING POINT I APPLIED MY BRAKES TO STOP TO SHIFT GEARS TO GO FORWARD. UPON PRESSING THE BRAKES THE VEHICLE WOULD NOT STOP AND CONTINUE TO ROLL BACKWARDS I PRESSED HARDER TO STOP THE VEHICLE IT DID NOT STOP IT ROLLED OVER A CURB AND BACKED INTO ANOTHER CAR BEFORE IT STOPPED. ONCE I TURNED OFF THE CAR AND RE-STARTED THE CAR AGAIN THE BRAKES WORKED PROPERLY. DAMAGE OCCURRED TO BOTH VEHICLES.

AIR BAGS — Filed 02/12/2019

TL* THE CONTACT OWNS A 2015 INFINITI Q50. WHILE DRIVING 55 MPH, AN 18 WHEELER PASSED THE CONTACT'S VEHICLE AND SPLASHED WATER ONTO THE ROAD. THE CONTACT'S VEHICLE HYDROPLANED AND CRASHED INTO THE TRUCK. THE VEHICLE THEN SPUN 360 DEGREES BEFORE CRASHING INTO A GUARDRAIL AND KNOCKING DOWN A HIGHWAY SIGN. THE AIR BAGS DID NOT DEPLOY. THE REAR WINDSHIELD SHATTERED, ALL FOUR DOORS WERE SMASHED IN, AND THE FRONT GRILL BECAME DETACHED. THE VEHICLE WAS TOWED TO AN IMPOUND YARD. THE CONTACT RECEIVED A SLIGHT CONCUSSION AND RECEIVED MEDICAL ATTENTION AT A HOSPITAL ON HER OWN. A POLICE REPORT WAS FILED. THE INSURANCE COMPANY HAD NOT YET MADE A DETERMINATION TO TOTAL THE VEHICLE. THE MANUFACTURER WAS CONTACTED, FILED A REPORT, AND PROMISED TO CALL BACK WITHIN 72 HOURS. THE DEALER WAS NOT CONTACTED. THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE FAILURE MILEAGE WAS 29,000. THE VIN WAS UNKNOWN.

ELECTRICAL SYSTEM,UNKNOWN OR OTHER — Filed 12/11/2017

TL* THE CONTACT OWNS A 2015 INFINITI Q50. WHILE DRIVING APPROXIMATELY 40 MPH, THE VEHICLE LOST POWER AND CRASHED INTO A GUARDRAIL. THERE WERE NO WARNING INDICATORS ILLUMINATED BEFORE THE FAILURE. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC. THE CONTACT SUSTAINED MINOR INJURIES, WHICH DID NOT REQUIRE MEDICAL ATTENTION. A POLICE REPORT WAS NOT FILED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. INFINITI OF RIVERSIDE (3040 ADAMS ST, RIVERSIDE, CA 92504 (951) 373-5200) WAS NOTIFIED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VIN WAS UNKNOWN. THE FAILURE MILEAGE WAS 40,000.

AIR BAGS — Filed 10/21/2017

TL* THE CONTACT OWNED A 2015 INFINITI Q50. WHILE ACCELERATING FROM A STOP AT 10 MPH, ANOTHER VEHICLE RAN A RED LIGHT. THE OTHER VEHICLE STRUCK A PEDESTRIAN AND THEN STRUCK THE PASSENGER SIDE OF THE CONTACT'S VEHICLE. THE CONTACT'S VEHICLE THEN CRASHED INTO A CEMENT DIVIDER. THE CONTACT'S SEVEN YEAR OLD SON WAS SEATED IN THE BACK SEAT. THE AIR BAGS DEPLOYED, BUT FAILED TO INFLATE. A POLICE REPORT WAS FILED. THE DRIVER AND REAR PASSENGER SUSTAINED INJURIES, WHICH REQUIRED MEDICAL ATTENTION. THE PASSENGER SUSTAINED WHIPLASH AND THE DRIVER SUSTAINED BRUISING TO THE LOWER BACK/STERNUM, WHICH REQUIRED X-RAYS, CAT SCANS, AND PHYSICAL THERAPY. THE DRIVER ALSO SUSTAINED HEADACHES, NAUSEA, AND STOMACH ISSUES THAT WERE POSSIBLY CAUSED BY INHALING FUMES FROM THE AIR BAGS. THE DRIVER WAS CURRENTLY SEEKING AN EAR/NOSE/THROAT DOCTOR. THE VEHICLE WAS TOWED TO A POLICE IMPOUND LOT. THE LOCAL DEALER WAS NOT CONTACTED. THE MANUFACTURER PROVIDED CASE NUMBER: 28713788 AND WAS SUPPOSED TO SEND A DVD ON HOW THE DEPLOYMENT OF THE AIR BAGS WORKED; HOWEVER, THE CONTACT FAILED TO RECEIVE THE DVD. THE CONTACT FOUND NHTSA CAMPAIGN NUMBER: 16V244000 (AIR BAGS) FOR HIS VEHICLE, WHICH WAS CONFIRMED BY THE MANUFACTURER. THE VEHICLE WAS DECLARED DESTROYED. THE FAILURE MILEAGE WAS APPROXIMATELY 28,429.

ELECTRICAL SYSTEM — Filed 02/14/2017

TAIL LIGHT ON THE CAR CAUGHT ON FIRE IN THE MIDDLE OF THE NIGHT IN THE OFF POSITION OUTSIDE MY RESIDENCE.

AIR BAGS — Filed 10/11/2016

TL* TAKATA RECALL. THE CONTACT OWNED A 2015 INFINITI Q50. WHILE DRIVING 35 MPH, ONE VEHICLE REAR ENDED THE CONTACT'S VEHICLE, A SECOND VEHICLE CRASHED INTO THE DRIVER'S SIDE OF THE CONTACT'S VEHICLE, AND A THIRD VEHICLE CRASHED INTO THE PASSENGER SIDE OF THE CONTACT'S VEHICLE. THE AIR BAGS FAILED TO DEPLOY. THE CONTACT SUSTAINED INJURIES TO THE HEAD, LEFT ARM, AND HAND THAT REQUIRED MEDICAL ATTENTION. A POLICE REPORT WAS FILED. THE VEHICLE WAS DESTROYED AND TOWED TO A COLLISION CENTER. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V244000 (AIR BAGS). THE PART NEEDED FOR THE REPAIR WAS NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 5,000. PARTS DISTRIBUTION DISCONNECT.

AIR BAGS,ELECTRONIC STABILITY CONTROL (ESC),FUEL/PROPULSION SYSTEM — Filed 08/22/2016

YOUR FORM DOESN'T WORK FOR ME. ALL SYSTEMS WERE AFFECTED. I TOTALED MY CAR WHILE DRIVING UP A HILL, IN CRUISE CONTROL, AND I HIT A PUDDLE. THE CAR ACCELERATED INTO THE MEDIAN. I WAS NO LONGER A DRIVER; I WAS A PASSENGER.

STEERING,SEATS — Filed 06/16/2016

LACK OF STEERING CONTROL, RESPONSIVENESS RESULTING IN DELAYED TURNING. I WAS DRIVING ON A RESIDENTIAL STREET, AND HAD A DELAYED TURN RESULTING IN AN ACCIDENT.

AIR BAGS — Filed 06/11/2016

TL* THE CONTACT OWNS A 2015 INFINITI Q50. WHILE DRIVING 45 MPH, A DEER COLLIDED WITH THE VEHICLE AND LANDED ON THE FRONT DRIVER SIDE OF THE HOOD, WINDSHIELD, AND ROOF. THE AIR BAGS FAILED TO DEPLOY. THE CONTACT SUSTAINED SCRATCHES ON HER BODY FROM THE BROKEN CLASS, BUT DID NOT REQUIRE MEDICAL ATTENTION. A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED TO AN INDEPENDENT COLLISION LOT. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 8,000.

SERVICE BRAKES — Filed 02/01/2016

FIRST INITIAL INCIDENT: AROUND SEPT/OCT OF 2015, I WAS DRIVING IN A FREEWAY WHERE THERE WAS A HEAVY TRAFFIC. CARS WERE RUNNING AT A SPEED OF 10-20 MPH. I WAS SLOWLY APPROACHING TO A STOP BY STEPPING ON MY BRAKE. THAT WAS WHEN MY BRAKE WOULD LOCK ON ME AND THE CAR WOULD NOT STOP TO MOVE FORWARD. LUCKILY SINCE I WASNT GOING FAST, I AVOIDED AN ACCIDENT WITH THE CAR IN FRONT OF ME. RECENT INCIDENT: HAPPENED JAN/FEB 2016, I WAS ON MY WORK'S PARKING LOT WHEN IT HAPPENED AGAIN. I HIT MY COMPANY WORK TRUCK IN THE REAR (MY CAR PRETTY MUCH GOT BURIED UNDER THAT TRUCK) AND CAUSED MY CAR TO HAVE A DAMAGE ON MY HOOD AND BUMPER. I REPORTED THIS INCIDENT TO INFINITI USA 3/1/2016, GREAT SERVICE BY THE WAY, TELLING THEM ALL MY INCIDENTS. I DIDNT REPORT ON MY INITIAL INCIDENT SINCE I THOUGHT IT WAS JUST A ONE TIME THING. WHAT IF I DROVE 70-80MPH ON THE FREEWAY AND THIS HAPPENED? MY LIFE'S AT A RISK WITH THIS VEHICLE. I DRIVE A LOT FOR WORK BUT THIS CANNOT KEEP HAPPENING TIME TO TIME. SO AFTER MY REPORT TO INFINITI, THEY OPENED MY CASE (WILL NOT SHARE MY CASE NUMBER) AND WILL SEND IT TO A INCIDENT SPECIALIST. I HAVEN'T REPAIRED ANY OF MY DAMAGE FROM THE MALFUNCTION YET BECAUSE I STRONGLY BELIEVE I AM NOT LIABLE FOR ANY OF THIS DAMAGE. I READ ONE OF THE COMPLAINTS ON NOVEMBER, 2016, AND THAT PERSON'S CASE GOT REJECTED. I AM GUESSING INFINITI DOES NOT WANT TO AGREE THEIR MALFUNCTIONS AND BLAME IT ON THE CUSTOMER? I AM AFRAID THAT SINCE I DO NOT HAVE A DASHBOARD CAMERA OR ANYTHING THAT WILL SUPPORT MY STORY, IT MAY BE REJECTED. BUT I AM WILLING TO ACT UPON THEIR DECISION IF IT DOES NOT RESOLVE THE WAY HOW IT SHOULD BE RESOLVED. HIGHLY CONCERNED ABOUT ANYONE'S SAFETY NOW DRIVING THIS VEHICLE AROUND.

AIR BAGS,SERVICE BRAKES — Filed 01/27/2016

TAKATA RECALL TGE AIRBAGS LEFT MY PASENGER AND I WITH HURT CHESTS N WAS PAINFUL INSTEAD OF PROTECTIVE

SERVICE BRAKES — Filed 01/22/2016

I WAS DRIVING ON THE FWY TRAFFIC WAS SLOW; MY SPEED WAS BETWEEN 20-25 MILES PH BRAKES DIDN'T RESPOND WHEN I APPLIED THE BRAKES I END UP HITTING THE VEHICLE IN FRONT OF ME LUCKILY NOTHING HAPPENS TO THE VEHICLE IN FRONT OF ME I HAVE TO LEAVE WENT TO SMALL MECHANIC SHOP THEY SAID THE BRAKE PEDDLE IS BEND BECAUSE WHEN I HIT THE BRAKES HARD TO STOP.

SERVICE BRAKES — Filed 09/18/2015

I WAS DRIVING 2015 INFINITY Q50 (PURCHASED ON 02/28/2015) ON LEE ROAD, SHAKER HEIGHTS, OHIO 44120, WHICH HAD A FIRST SCHEDULED MAINTENANCE ON 09/14/2015 AT THE BEACHWOOD INFINITY DEALER. I STOPPED AT THE INTERSECTION OF LEE ROAD AND CHAGRIN BLVD. BEHIND A BLACK JEEP FOR WAITING TRAFFIC. I HAD MY CAR IN DRIVE AND MY FOOT FIRMLY ON THE BRAKE, ABOUT FEW SECONDS PASSED AND SUDDENLY MY CAR STARTED TO MOVE SLOWLY FORWARD WHILE MY FOOT WAS STILL FIRMLY ON THE BRAKE. AS MY CAR DID NOT STOP, I ATTEMPTED TO PUSH THE BRAKE HARDER AND TO AVOID REAR COLLISION WITH JEEP, I TURNED TOWARD SIDEWALK, IN A MOMENT MY CAR JUST TOOK OFF AT THE SPEED, HITTING FIXED OBJECTS ON SIDE WALK, MISSING SOME ON COMING VEHICLES AND BY GRACE OF GOD I MANAGED MY CAR AND CAME ON CHAGRIN BLVD. WITHOUT FURTHER INCIDENTS. I HAD MY DASH CAM ON WHICH HAS RECORDED THE INCIDENT. THIS INCIDENT OCCURRED ON 09/18/2015. AFTER FEW DAYS I NOTIFIED THE INFINITY AND THE COMPANY ISSUED A CLAIM # 20499682. AFTER SEVEN DAYS MR. TERRY MATT CLARK, INCIDENT INVESTIGATION SPECIALIST, NISSAN NORTH AMERICA INC. CALLED ME AND TOLD ME HE CAN NOT SCHEDULED THE INSPECTION IMMEDIATELY AND SCHEDULED ON 11/06/2015, DURING THIS TIME VEHICLE WAS RESTORED WITH THE DAMAGE OVER $22,000.00 WHICH I CLAIMED THRU MY AUTO INSURANCE. ON 11/16/2015 I RECEIVED THE LETTER FROM MR. CLARK, DENYING THE PROBLEM WITH THE CAR AND NOT RESPONSIBLE FOR ANY CLAIM.