Consumers have filed a total of 34 complaints related to Infiniti VEHICLE SPEED CONTROL.
Car will stop accelerating with no warnings then will start back move when you let the sit for and hour. Engine light will not light up when the incident happened so the problem can not be diagnosed until the engine come on. However when the engine light does come you can take to dealership and they will tell that the transmission speed sensors need to be replaced in which the sensor is located inside the transmission and in conjunction to that it is recommended that the valve body should be replaced also. This has been a problem with a lot of the infiniti? S with years ranging from 2014-2019 with 3. 7 liter engine. This problem should be resolved because the car can suddenly stop move at high speeds and cause and accident. Please take a good look at this recall aamco transmission have had hundreds of infiniti? S with the same problem and they can not repair so they will send you to the dealership for repairs in which it will cost the consumer 3,000 plus to fix the problem and they will recommend that you should get the transmission replaced instead of repairing it and most of the vehicles are having this problem with low mileage. Scan codes p0500, p0720, p1574
Chassis control system error message comes up. Normal driving. Parked and next day error message displays. Driving not yet affected. Dealership says they know of error message.
Unexplained acceleration caused vehicle to exceed posted speed limit and driver? S desired speed. On a city street at approx 7pm i was increasing speed after sitting at a stop light, i slowly started to accelerate, i felt a jolt & vehicle suddenly picked up speed. Not knowing why this was happening i repeatedly pushed the cancel button on the steering wheel & pushed the brake pedal. Vehicle continued to pick-up speed when i stopped pushing brake pedal. I came to a complete stop & vehicle went to picking up quick speed without me pushing accelerator pedal. I pulled into vacant parking lot, put vehicle in park, removed my foot from brake pedal & vehicle accelerated high (rpms) by itself for a few seconds & stopped (went to normal idling). I turned vehicle off, restarted & the vehicle drove normally afterwards. I have reviewed owners manual & can? T figure out what i may have done to cause the unexpected vehicle acceleration that pushing the cancel button on the steering wheel and/or pushing the brake pedal wouldn? T turn off. I was not attempting to use speed control functions of the vehicle. Standard driving. I believe it was a vehicle malfunction and not driver action that created this unsafe situation. Thankfully surrounding traffic was light on what is typically a busy street.
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.
WAS DRIVING MY Infiniti Q50 ON A NORMAL DRY DAY WHEN ALL OF A SUDDEN IT DOWN SHIFTED OR FELT LIKE I WAS DRIVING A STANDARD MODEL VS AUTOMATIC... I PULL OVER MY ENGINE LIGHT COMES ON.. I TURNED OFF ALL SENSORS ASSOCIATED WITH THE INTELLITOUCH SYSTEM THINKING IT WAS NOT JUDGING THE DISTANCE CORRECTLY BETWEEN CARS BECAUSE IT WILL AUTOMATICALLY SLOW YOUR CAR DOWN... CONTINUED DRIVING AND I?M NOTICING AS I TRY TO ACCELERATE MY CAR IS NOT SHIFTING INTO 3RD GEAR... SO I GET TO ABOUT 35-40 MPH AND NOW I CAN TELL IT?S REVVING IN THE SAME GEAR..GET HOME GOOGLE THE ISSUE AND IT SEEMS THE VALVE BODY ON THE 2015 Q50 HAS A THREAD... GO TO YOUTUBE THIS GUY HAS A VIDEO ABOUT HIM BEING TOLD IT?S THE SPEED SENSORS... BUT WHEN HE WENT FOR REPAIR INFINITI INFORMS HIM THE VALVE BODY NEEDS REPLACING. I TOOK MY CAR INTO AN INFINITI DEALER , SPENT $180 TO HAVE A DIAGNOSTIC RUN AND WAS TOLD THEIR IS A SERVICE BULLETIN FOR THE SPEED SENSORS THAT THEY SHOULD JUST REPLACE THE VALVE BODY. THE VALVE BODY IS $1635 AND ON A NATIONAL BACK ORDER AS OF AUGUST 2020 WHEN I?M EXPERIENCING THIS ISSUE.. CALLED INFINITI CONSUMER AFFAIRS AND I?M TOLD WELL UNLESS YOU PAY FOR THE PART WE CAN?T DO ANYTHING TO GET IT EXPEDITED... IT?S BEEN 45 DAYS... SO I HAVE TO TIE UP $1700 AND DON?T KNOW WHEN THIS PART MAY BE AVAILABLE.. CAN?T DRIVE CAR BECAUSE I?LL BURN MY TRANSMISSION UP... THE VALVE BODY IN 2015 Q50?S NEED TO BE RECALLED...I COULD HAVE BEEN ON THE FREEWAY OR DRIVING TO OR FROM LOUISIANA FROM HOUSTON.. LUCKILY I WAS WITHIN 15 MILES OF MY HOME.. CALLED THE OTHER 2 INFINITI DEALERS IN HOUSTON NONE OF THEM HAVE IT IN STOCK AND HAVE AT LEAST 1 Q50 WAITING FOR REPAIR.. CALLED THE DEALER IN AUSTIN ALSO NO STOCK WITH 2 VALVE BODIES ON RESERVE... I HAVE 106000 MILES ON MY Q50 AND IT?S NO LONGER UNDER WARRANTY.. THIS ISSUE HAS BEEN REPORTED AT FEWER MILES LIKE 30K-50K SO HAS NOTHING TO DO WITH THE AGE OF THE CAR.