2015 INFINITI Q50 Electrical System Problems

The car just slowed down super fast on freeway almost got rear ended. It would not go past 3rd gear. Poor acceleration. Could have caused a huge accident. I got it diagnosed and they said it is valve body/speed sensor/tcm and they said this is a COMMON problem for 2015 Q50. I replaced this part 2 years ago and here we go again. Shop diagnosed and said this tcm (transmission control module which is in the transmission) but they have to change whole transmission. Everything happened all the sudden then check engine light came on.

P07200 code came up, transmission is no good because of a cheap sensor that's impossible to fix. seems to be very common and very inconvenient

Power steering failed while driving in parking lot looking for parking spot. Unable to turn wheel without hitting parked car. I was able to drive to end of the lot where there were less cars. Noticed that I was able to turn wheel so long as didn’t step on brakes. The steering wheel was also off alignment. This happed on a Saturday evening, next day car was fine all the warning were off. Spoke to service person explained what happened. He basically said if the car is running fine they can check it out but may not find the problem. Since the car was running fine until it wasn’t. Car was parked in garage turned on the car all warning lights go on. Made appointment for 4/3/24 drove car to dealership which is not to far. The warning lights still on and no power steering. Analysis many DTC codes found related to this system:B2512 4WAS SIG: C1B9000 DAST SYSTEM: C1138 4WAS CIRCUIT & C1A04 ABS/TCS/VDC CIRC. Correction Recommended to perform DAST calibration first before performing further diagnosis. COST $539.15 . They also did Multi-Point Inspection items requiring immediate attention Engine Air Filter COST $94.99 GRAND TOTAL $641.64 out of pocket. 4/3/24 picked up car. On that evening drove the car and as I’m pulling up on drive way power steering goes out again. I managed to get the car in garage. Once I’m in push button to close garage doesn’t work and car dies no power at all. Able to get car started by playing with battery cables. On dealership notes car was there 30 miles ago. Now they say wrong battery size. That battery was replaced by them on 2/28/22. Also the battery just past Multi-Point 2 days ago.New battery cost $232.78 now out of pocket $874.42.This is now 4/10/24. Drove that evening and front splash guard fall off had to tie wrap to hold whatever pieces are left. Took it to dealership they took no responsibility. I will need to replace it. I have all my receipts from them they are the only ones who have worked on my vehicle.

My car started acting weird, fob wasn’t working correctly, doors repeatedly lock nonstop and drained battery. I took to Infiniti and they said it’s water damage from my sunroof drains. It damaged my BCM. Infiniti has quoted me 3,700 dollars to fix. I’ve done lots of research and this seems to be a very common problem with the Infiniti q50 models. I believe this is a manufactured defect. This could of left me stranded because car wouldn’t crank.

My car would not accelerate over 40 mph randomly after work. Once i noticed and tried to shift to a lower gear the car did not shift gears at all. When these things first happened there was no indicator lights on. The next morning the check engine light came on and the code pulled was P0720. After finding a repair shop to look further into the issue I was advised the car needed a new transmission to fix the issue. $4,000+ for the repair and as i google the issue I see that this is a common issue and it seems to always happen unexpectedly side note: also should be a recall on driver side blend door.. i almost died this summer due to cold air only blowing on one side in the middle of summer in 100• degree weather.

The contact owns a 2015 Infiniti Q50. The contact stated that while driving at highway speeds, the vehicle inadvertently slowed down. The vehicle failed to accelerate. The check engine warning light was illuminated. The vehicle was towed to the local dealer where it was diagnosed that a valve body replacement was needed. The vehicle was not repaired. The manufacturer was contacted, and the contact was informed that the vehicle was not covered under warranty. The failure mileage was approximately 56,000.

Mileage: 56,000

All or one of the doors lock preventing someone from exiting the vehicle. This could be extra dangerous during adverse weather conditions or in the event of an emergency.

My Car Suddenly Stopped In The Middle Of The Road With A Check Engine Light. I Have a P0720 & P0500 Codes Indicating A Vehicle Speed Sensor & Output Speed Sensor Failed While Operating . This Cause My Transmission To Fail And Not Shifting. I Am On My Way To The Dealer Now . Hopefully Infiniti Will Do The Right Thing And Fix It . At 56,000 Miles A Transmission Should Not Fail . Unexpectedly Almost Causing A Car Collision . No Prior Warning Was Provided By The Car . The Car Just Suddenly Failed . This Is A Very Serious Safety Concern .

It seem as the chassis control system continues to fail even after I had the entire system replaced at Austin Infiniti. It seem as it is electrical that doesn't occur all the time but occurs randomly even while driving. It make the steering lock up after a stiff pull at random times then cause all the other system to act up such as the collision or lane departure. It states error code chassis control system and Infiniti each time after taking it back for a warranty job they decline after having footage that I take when the error occurs with my steering wheel in a different angle for forward driving. This is why I am writing this if it can resolve others who have ran into this occurrences when Austin Infiniti has told me they have ran into this before for another customer but luckily they car was under the manufacturer warranty and mine carshield. Will be dropping off again in March for my appointment since it seem to be coming on more often hoping the warranty company can inspect the error this time to repair it.

MY CAR PAUSE AND JERKS THEN STOPS. THIS IS THE SECOND TIME THIS HAS HAPPENED AFTER BEING FIXED. THE MECHANIC SAID THEY HAD A RECALL ON THE 2016 MODELS FOR THIS BUT NOT THE 2015 BUT HAD TO CORRECT MANY OF THE 2015 MODELS. THE CHECK ENGINE LIGHT CAME ON AFTER IT STOPPED. I WAS ON THE INTERSTATE THE LAST TIME WHEN IT STOPPED. I AM AFRAID THAT IT MIGHT HAPPEN AGAIN WITHOUT ANY WARNING. THIS IS A LIFE THREATENING DEFECT THAT INFINITI NEEDS TO CORRECT ASAP.

TL* THE CONTACT OWNS A 2015 INFINITI Q50. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 70 MPH, THE VEHICLE JERKED, SHIFTED GEARS, REDUCED SPEED, THE ODOMETER FLASHED, THE CHECK ENGINE WARNING LIGHT ILLUMINATED, AND THE HEATING AND AIR CONDITIONING SYSTEM WENT FROM COLD TO HOT. THE CONTACT GOT OFF THE NEAREST EXIT AND PULLED OVER AND WAITED A WHILE BEFORE CONTINUING TO DRIVE HOME TO PARK THE VEHICLE. THE CONTACT STATED THAT A DIAGNOSTIC CODE READER RETRIEVED DTC CODE: P0720 (OUTPUT SPEED SENSOR). THE CONTACT CONTACTED INFINITI OF TAMPA (4600 N DALE MABRY HWY, TAMPA, FL 33614; (813) 694-1579) AND WAS INFORMED THAT THE CAMSHAFT NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE APPROXIMATE FAILURE MILEAGE WAS 65,000.

Mileage: 65,000

I WAS SIMPLY DRIVING ON THE STREET WHEN MY VEHICLE STOPPED IN THE MIDDLE OF THE ROAD CAUSING CARS TO ALMOST HIT ME. I WAS NOT INVOLVED IN ANY ACCIDENT BUT INFINITI HAS INFORMED ME THAT THE EMERGENCY SHUT OFF WAS ACTIVATED FOR UNKNOWN REASON CAUSING MY AC COMPRESSOR TO BLOW AND ENTIRE FUSE BOX TO BE DESTROYED. MY CAR ONLY HAS 70K MILES ON IT SO THIS A SAFETY HAZARD. THESE PARTS NEED TO BE RECALLED IMMEDIATELY THERE'S NO LEGITIMATE REASON FOR A NEW CAR TO DO THIS. ACCORDING TO THE MANUAL THE EMERGENCY SHUT OF FOR INFINITI HYBRIDS ONLY HAPPENED WHEN INVOLVED IN MAJOR CAR ACCIDENTS. THIS IS NOT RIGHT.

CARS STEERING WHEEL WILL CLUNK AND TURN OPPOSITE DIRECTIONS WILL REVERSING INTO PARKING SPOTS OR SLOWLY TAKING OFF FROM BEING STATIONARY. THIS HAS HAPPENED A FEW TIMES OVER THE COURSE OF 4 MONTHS AND I'VE ONLY HAD THE CAR FOR ABOUT 7. LAST NIGHT I WAS PULLING INTO MY DRIVEWAY AND THE STEERING WHEEL SHARPLY TURNED RIGHT, I SHIFTED THE CAR TO PARK, AND THE CAR JUST COMPLETELY DIED. NOTHING HAD WORKED AT THAT POINT, NO LIGHTS, IGNITION, KEYS, NOTHING. I GOT OUT OF THE CAR AND SHUT THE DRIVER DOOR AND EVERYTHING TURNED BACK ON EXCEPT NOW THE STEERING WHEEL WON'T TURN UNLESS USING UNREASONABLE FORCE. POWER STEERING LIGHT ILLUMINATED, CHASSIS CONTROL. THIS HAS ALSO HAPPENED ON MY TEST DRIVE WITH THE VEHICLE IN DECEMBER OF 2018 WITH 54,000 MILES BEFORE PURCHASING . THE STEERING WHEEL SLIGHTLY TWITCHED AND I EXPRESSED MY CONCERN TO THE DEALER AND HE SAID IT WAS NORMAL. IT WAS VERY LIGHTLY THAT YOU COULD HARDLY TELL IT DID IT SO I WASN'T SUSPICIOUS OF THE CAR HAVING PROBLEMS. THIS HAS NOT ALMOST CAUSED IN ACCIDENTS BUT I HAVE A 3 MONTH OLD GIRL AND THIS IS VERY UNSAFE AND ALSO MY ONLY CAR.

Mileage: 60,000

ON 12-04-2018 MY WIFE AND I BEGAN A ROAD TRIP FROM SOUTHERN CALIFORNIA TO BOZEMAN, MONTANA IN OUR 2015 INFINITI Q50. THE INFINITI Q50 IS EQUIPPED WITH DRIVER AND PASSENGER SEAT WARMERS. DUE TO THE EXTREME COLD, MY WIFE (PASSENGER) ACTIVATED HER RIGHT FRONT PASSENGER SEAT WARMER TO THE HIGH SETTING. THE RIGHT FRONT PASSENGER SEAT WARMER WAS ACTIVATED FROM NORTHERN NEVADA TO IDAHO FALLS, IDAHO, APPROXIMATELY FOR 9 HOURS. AS WE APPROACHED IDAHO FALLS, MY WIFE AND I BEGAN TO SMELL A BURNT ODOR COMING FROM WITHIN THE INTERIOR OF THE PASSENGER COMPARTMENT OF THE INFINITI. WE IMMEDIATELY PULLED OVER AND MY WIFE LOCATED THE BURNT SMELL COMING FROM THE RIGHT FRONT PASSENGER SEAT WHERE MY WIFE'S RIGHT ELBOW HAD BEEN RESTING DURING THE TRIP. THE SEAT WARMER HAD HEATED THE SEAT TO THE POINT WHERE IT HAD BURNED THROUGH THE LAYERING AND SOFTENED THE LEATHER TO THE POINT WHERE MY WIFE'S ELBOW WENT THROUGH. THIS WAS AN IMMEDIATE CONCERN AND WE TURNED OFF BOTH SEAT WARMERS. ON 12-17-2018, UPON OUR RETURN FROM MONTANA WE TOOK THE INFINITI Q50 TO THE PERRY INFINITI DEALERSHIP OF ESCONDIDO, CA WHERE IT WAS LEFT FOR INSPECTION. ON 12-19-2018 WE WERE TOLD BY PERRY INFINITI DEALERSHIP THAT THE DAMAGE WOULD NOT BE COVERED DUE TO THEIR FINDINGS. PERRY INFINITI STATED THAT THEY BELIEVED THE DAMAGE TO BE CAUSED BY AN OUTSIDE SOURCE. THIS TO US WAS IMPOSSIBLE SINCE WE ARE NOT SMOKERS NOR DO WE TRANSPORT ANY FLAMMABLE PRODUCTS IN OUR VEHICLE. WE CONTACTED THE INFINITY CONSUMER AFFAIRS AND REPORTED THE INCIDENT BUT MET WITH THE SAME NEGATIVE RESULTS. A CONSUMER AFFAIRS CASE WAS STARTED AND WE WERE TOLD THAT THE ULTIMATE DECISION WOULD BE MADE BY THE DEALERSHIP. WE FIND THIS VERY DISTURBING AND SEE FUTURE ISSUES WITH INFINITI'S SEAT WARMERS THAT COULD ULTIMATELY LEAD TO BODILY HARM. THANK GOD FOR MY WIFE'S LAYERING OF CLOTHING OR SHE MAY HAVE RECEIVED BODILY HARM.

Mileage: 80,000

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.

Mileage: 40,000

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

Mileage: 8,000