Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2018 Nissan Altima owners, lightly cleaned up (personal details are redacted by NHTSA).
Brake light switch went out 3 months after getting car. Car would not start then after it started it would not go in gear nor would the brake lights turn on dealership repaired it. The Brake light switch went out again one year later while driving causing my brake lights not to turn on resulting in me getting rear ended after. After I replaced the switch for the second time. It lasted maybe a year and a half or so and went out again leaving me stranded having to get a tow truck to bring car home and had to replace it a third time. I've had this car less than 5 years and I really believe it needs further review of the switch due to the safety risk it causes
The contact owns a 2018 Nissan Altima. The contact stated upon entering the vehicle, the ignition switch failed to operate as designed. The contact was unable to start the vehicle. There was no warning light illuminated. The vehicle was taken to a local dealer where it was diagnosed with the brake pedal switch needing to be repaired. The vehicle was not repaired. The manufacturer had been informed of the failure and informed the contact that they would escalate the claim. The failure mileage was approximately 40,000. The VIN was not available.
The airbag safety system has failed in my car. When a passenger or driver is in the car. The weight sensors and seatbelt sensors that activate the the airbag system fail to activate. This is something that I caught and mentioned it to a Nissan dealer when my car was in for service on another recall for hood latches. This is something that not only puts risk to passenger and driver in my car. But puts others at risk as well. Nissan and the extended warranty company have failed to correct the issue. As my safety is now at risk if I get into an accident and my airbags do not deploy. The issue is that the weight sensors and modulator have gone bad. The total cost just for those two things is around $585, by the time you add in airbag system replacement it comes to around $5000 to $7000. …
Didn't know what the list this one but at a certain speed on the highway the hood latch comes loose unlocks, and my backup camera All of a sudden doesn't always work, sometimes the screen is completely black... Also the sensor that tells you that a car is too close to you keeps turning itself off and then when you check the radar sensor to make sure that it's clear of debris there's no debris but yet this thing just keeps turning itself off while you're on the highway or local road... I will list when the first problem started happening and then we know when the other ones start happening consecutively afterwards.. electrical issue front passenger door will not open automatically Putting my passenger at risk
The problem of delayed acceleration. The problem occurs when the vehicle does not seem to accelerate for a short period of time. When I'm at a stop. and I depresses the pedal. The vehicle does not rev. It does not do anything for a few seconds. Even with increased force on the pedal, the vehicle does not move. The second concern is that, once it does move, it does so significantly with a jolt. This means that, after a few seconds of not functioning, the vehicle will suddenly accelerate quickly. This can create an increased risk of an accident.
As I was driving on a highway, my sunglasses and light compartment on my roof completely fell out of my roof in front of my windshield view. I contacted Nissan and they stated that they could do absolutely nothing for me. Did not have any concerns regarding the fact that it almost caused me to get into an accident as it came swinging right in front of me and almost hit me and my head. This is also a very common issue when you look it up online with these vehicles.
The airbag light keeps coming on in the dashboard. I've had it in the shop twice for the diagnostic test and both times they said there was nothing they could find! Now it's the 3rd time I will need to take it in and leave it and it's the only car I have. I want to know if indeed my airbags will work in the event of an accident! If they are just turning the light off, I have no idea what will happen if I got into an accident!!
The driver's side door lock actuator stopped working around June 2024. Haven't replaced it yet, but bought another part. Read where others are having same issue. Just in the last couple of weeks, around June 15th, 2025, my rear driver's side door actuator stopped working as well. I have to crfrawl in from the other side and unlock the doors. Safety issue since the doors do not lock or unlock.
My Nissan Altima's power door locks failed making entry and egress sometimes impossible. While the key will unlock the driver's door, rear seat passengers have been unable to exit the vehicle without assistance due to the door being locked. Premature power door lock actuators in Nissan vehicles is reportedly a very common problem according to my research.
Vehicle turned off while driving. Battery disconnected as the battery terminal connector got lose. after a quick clean-up of the terminal corrosion, it was obvious that the terminal has completely deteriorated (corroded) and has no more strength to hold a good contact to the battery terminal.
Electrical complaints in other Altima years
Frequently asked questions
How common are electrical problems on the 2018 Nissan Altima?
NHTSA has 37 complaints about the electrical system of the 2018 Nissan Altima, 16% of the model year's 226 complaints. The component named most often is ignition (1 mentions).
Is there a recall for 2018 Nissan Altima electrical problems?
No. NHTSA lists no electrical system recall for the 2018 Nissan Altima, though it has 2 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2018 Nissan Altima electrical problems start?
Half of the complaints with a recorded mileage happened before about 32,000 miles, and 30% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 0 fires and 0 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.