2018 Nissan Armada Complaints

ELECTRICAL SYSTEM,ENGINE — Filed 05/12/2026

My 2018 Nissan Armada has had SO MANY issues (probably 15-20) with not starting when cranked. Something is draining its battery. We have had to change the battery so many times (usually 2-3 times every year or two.) This happens without any notice! We have been stranded in other cities, stores, &/or at work. We have tried having it checked out by different repair shops, replacing batteries in key fob, replacing battery MANY TIMES, and checking the brake pedal switch. We are at our Witt’s end with Nissans!

ENGINE — Filed 04/13/2026

UNKNOWN - engine developed knock that could potentially lead to catastrophic engine failure during normal driving conditions, causing loss of control or inability to stop. NTB19-057a is a technical service bulletin issued by manufacturer - cylinder 7 scuffing with a short block or complete engine replacement as the fix. Manufacturer will not replace engine outside of vehicle warranty period, even with documented maintenance proving engine failure is not due to lack of being maintained.

UNKNOWN OR OTHER — Filed 02/01/2026

My battery kept dying every 6-12 months for the past 8 years! Every time I took it to the dealer or to other mechanics, they ran diagnostics tests and told me nothing was wrong, even though I knew something was definitely wrong. We found out that MANY other Nissan Armada owners AND Infiniti QX80 owners have been dealing with the exact same thing. They showed us how to cut a wire, that would bypass the IPDM smart charging system. Ever since cutting that wire, my car has been working perfectly, and no more battery dying! Please look into this so others don't deal with what I did. Here's the video that we received that explains everything: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

LATCHES/LOCKS/LINKAGES,ELECTRICAL SYSTEM — Filed 12/24/2025

See attached document for complaint.

POWER TRAIN — Filed 12/17/2025

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.

FUEL SYSTEM, GASOLINE,ENGINE — Filed 08/16/2025

The contact owns a 2018 Nissan Armada. The contact stated that while operating the vehicle, the check engine warning light remained illuminated. The contact stated that the vehicle stalled several times after refueling. The vehicle was taken to the local dealer, who diagnosed that the fuel pump was faulty and needed to be replaced. The fuel pump was replaced. The manufacturer was not yet contacted. The contact was informed that the year, make, and model were not included in the NHTSA Campaign Number: 25V676000 (FUEL SYSTEM, GASOLINE). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 157,000.

FUEL/PROPULSION SYSTEM — Filed 10/02/2025

Well wife was driving car on her way to work and it shut off in the middle of traffic. Was no sure what was wrong until I brought it home and started reading the codes. It gave me P0087 P0090 low fuel pressure regulater circuit open and P119C. So I changed out the sensor the in tank fuel pump, high pressure fuel pump and sensor on the evap can. Car still will not start. So I bought a wiring diagram to see were everything was routed and found out the have a built in fuel relay so I bought a new PCM that didn't work so then I found out it there was a fuel pump controller module so change that and still not cranking. Fuel pump flows fuel for a second then shuts off. Now I am not sure what to do now. Truck has been down for 3 weeks now. And been have to renting a car since then.

POWER TRAIN — Filed 07/04/2025

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.

SERVICE BRAKES — Filed 08/22/2025

There is a common known issue with the Armadas that Nissan has not addressed, where you will randomly get a "BCI Malfunction" warning, sometimes corresponding to a warning about the ABS System. The car will not shift out of the current gear when this happens, until you turn it off and back on again. If you are really unlucky, like I am, this will progress to the car randomly applying the brakes and initiating hard stops, in traffic. This happened to me two days ago in traffic and I narrowly escaped an accident. I had to get the car towed home and it still intermittently does this. The brakes locked up so badly that the car was covered in smoke and appeared to be on fire. This is terribly unsafe, and Nissan needs to fix it, because it is more likely that an Armada owner WILL encounter this, than that they won't, and people are going to be injured and/or killed, if they have not already. This is very serious. Please help.

FUEL SYSTEM, GASOLINE — Filed 08/12/2025

The contact owns a 2018 Nissan Armada. The contact stated that while the vehicle was parked and unoccupied, there was an abnormally strong fuel odor coming from the vehicle and there was fuel on the ground. The contact stated that prior to the failure, there was no warning light illuminated. Upon further inspection, the contact discovered a crack in the fuel pump near the fuel hose connection. The dealer was made aware of the failure and informed the contact that the fuel pump needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 114,000.