2018 Nissan Armada Power Train

TCC slips, RPMs are all over the place at light throttle between 15-40mph. Believed to be an issue with the torque converter, known to Nissan.

The contact owns a 2018 Nissan Armada. The contact stated that while shifted in reverse, the vehicle failed to respond; however, the vehicle was able to drive forward. There were no warning lights illuminated. The vehicle was taken to an independent mechanic who diagnosed the vehicle and determined that the transmission needed to be replaced. The vehicle was not repaired. The mechanic, who was a former mechanic with Nissan, informed the contact that it was known failure with the Nissan transmission, and that the shifter was unable to shift into reverse. The dealer was contacted and confirmed that the transmission replacement was not covered under warranty or recall. The manufacturer was not made aware of the failure. The failure mileage was approximately 98,000.

WHILE DRIVING THE VEHICLE HAS DISPLAYED AN INTERMITTENT TRANSMISSION SHUDDER AT LOW SPEEDS WHEN ACCELERATING FROM A STOPPED POSITION. THIS OCCURS AT SPEEDS BETWEEN 20-40 MPH. THE SHUDDER CAN BE FELT THROUGH THE FLOOR INTO THE SEAT AND APPEARS AS IF THE TRANSMISSION IS SEARCHING FOR A PROPER GEAR. UNDER HARD ACCELERATION/FREEWAY DRIVING THE ISSUE DOES NOT PRESENT ITSELF. THE VEHICLE HAS BEEN INTO BOTH MY NISSAN AND INFINITY DEALER. BOTH TECHNICIANS WHO INSPECTED THE VEHICLE CONFIRMED FEELING THE SHUDDER. DRIVELINE SERVICE WAS PERFORMED AT NISSAN AND THE ECM RECEIVED THE MOST CURRENT UPDATE. NISSAN TECHNICIAN ADVISED THAT THIS IS A KNOWN PROBLEM WITH THE ARMADA AND THAT THE SHUDDER IS DUE TO THE COMPUTER TRYING TO FIND THE OPTIMUM TRANSMISSION SHIFT POINTS FOR THE BEST FUEL ECONOMY. I BROUGHT THE VEHICLE TO MY INFINITY DEALER AFTER LEARNING THAT THE ISSUE IS KNOWN TO EXIST IN THE QX56 & QX80 AS WELL AS THE ARMADA AS THE VEHICLES ALL SHARE THE SAME COMPONENTS. MY SERVICE TECHNICIAN DROVE THE VEHICLE AND ALSO CONFIRMED THE SHUDDER OCCURRING INTERMITTENTLY UNDER CERTAIN DRIVING CONDITIONS. I REQUESTED THAT THEY SEARCH FOR THE MOST CURRENT UPDATE WHICH WOULD BE THE "E" UPDATE, UNFORTUNATELY THIS UPDATE ONLY APPLIES TO MODELS PRIOR TO 2018. SERVICE TECH ADVISED ME TO CONTINUE TO DRIVE THE VEHICLE NORMALLY AS THIS IS NOT A MECHANICAL ISSUE, BUT A SOFTWARE ISSUE. HE ALSO CONFIRMED THAT NISSAN / INFINITY ARE WELL AWARE OF THE ISSUE AND HAVE DONE LITTLE TO NOTHING TO PROVIDE A TSB, COMPUTER UPDATE, OR PERMANENT SOLUTION. HE FURTHER ADVISED THAT A TRANSMISSION REPLACEMENT, REBUILD, OR MAJOR SERVICING WOULD NOT RESOLVE THE ISSUE AS IT IS SOFTWARE RELATED. IT IS DEEMED VERY COMMON. THIS IS UNACCEPTABLE IN A $65,000 VEHICLE. NISSAN NEEDS TO RESOLVE THIS ISSUE INSTEAD OF HAVING DEALERS ADVISING OWNERS THIS IS NORMAL. MY CONCERN IS A TRANSMISSION FAILURE WHILE DRIVING.

TRANSMISSION WILL NOT SHIFT GEARS PROPERLY , CAUSING VEHICLE TO STALL IN TRAFFIC THIS IS THE SECOND TIME THIS HAS HAPPENED WITH THIS VEHICLE , 1ST TIME NISSAN REPLACES TRANSMISSION AND NOW THIS HAPPENS AGAIN

ON 5 SEPARATE OCCASIONS 2 ON THE SAME TRIP, WHN TRAVELING DOWN INTERSTATE VEHICLE WILL NOT PULL, LIKE ITS STUCK IN A GEAR AND WILL NOT SHIFT . HAPPENS AROUND 80 MPH. CREATING A DANGEROUS SITUATION WHEN VEHICLE WILL NOT SPEED UP AND SLOWS DOWN FROM 80 MPH TO 65 AND WILL NOT GAIN ANY SPEED, THIS HAS ALMOST CAUSED A WRECK 3 TIMES ALL ON THE INTERSTATE. THIS VEHICLE HAS BEEN TO DEALER 3 TIMES FOR SAME ISSUE, 1ST TIME NOTHING FOUND PER THEM, SECOND TIME REPLACED TRANSMISSION VALVE BODY, 3RD TIME REPLACED TRANSMISSION. STILL NOT REPAIRED