2021 Nissan Sentra Electrical Problems

Your 2021 Sentra's forward collision warning system is activating unexpectedly and applying the brakes even when nothing is actually in front of you. This has started happening more frequently—three times in one morning—causing your car to come to a complete stop without warning, which creates a safety hazard. You've also had to replace the battery twice since owning the vehicle. The issue likely involves a faulty sensor or electrical problem in the collision avoidance system that needs diagnostic testing and repair.

Your passenger front window and both rear windows have stopped working, which appears to be a widespread issue on this model year. Your keyless start system also malfunctions—it often doesn't recognize when your key fob is in the vehicle or displays a low battery warning even with a new battery. These problems suggest broader electrical and sensor issues affecting this vehicle. The non-functioning windows could pose a safety concern if someone needs to exit the vehicle quickly.

Your car's electrical system has malfunctioned twice, preventing the engine from starting even though it was running fine shortly before. The first time, a faulty battery was identified under warranty; the second time, you needed a jump start before the engine would finally turn over. The issue may require battery testing or replacement, and potentially diagnosis of the charging system to prevent future starting problems.

Your car won't start and requires jump starts to run. This has happened four times without any warning lights, and each time it takes several minutes of charging before the engine will turn over. You've been stranded twice and late to work twice because of this issue. The problem likely involves replacing or testing your battery and charging system.

Your rear door locks frequently fail to lock and unlock using the power lock switches or key fob, happening daily. Your rear windows also get stuck and won't roll down regularly. Because you use this vehicle to transport children, these combined issues create a safety concern since occupants may have difficulty exiting the vehicle quickly in an emergency. The fix will likely involve inspecting and repairing the door lock actuators and window motor mechanisms.

Your door locks are malfunctioning on three of your four doors (driver's side front and both rear doors), causing them to lock or unlock unexpectedly without you controlling them. This creates a safety risk since you could become trapped inside your vehicle during an emergency, and it also increases your risk of theft. The dealership quoted $884.05 to repair the door lock actuators.

Your air conditioning system won't turn on at all — the controls are completely unresponsive. The problem appears to be an electrical fault or defective AC component, and you were quoted $300 just for diagnostics with no warranty. A repair will likely involve diagnosing the electrical circuit, AC control module, or compressor clutch to restore functionality.

Your power windows on the passenger side and driver's rear side occasionally stop working. This intermittent problem means the windows may fail to operate when you try to use them, though they typically work again later. The issue likely involves a faulty window motor, switch, or electrical connection that will need diagnosis and repair.

Your passenger side windows may get stuck and refuse to roll up or down, or move very slowly, while your driver's window works normally. This can leave your windows unable to close properly during rain or overnight, creating a security and weather exposure issue. The problem is typically related to the window switch mechanism and may require replacement of the switch or window motor components.

Your rear windows and passenger window won't close properly — they get stuck in the open position. You may need to try multiple times and restart the car several times before they'll respond, and it can take hours for them to work again. To stay safe, you've stopped using the rear windows. The fix will likely involve diagnosing the window motor electrical connections or replacing the window regulators and motors.

Automatic emergency brake engaged while driving when there was not a car directly in front of me. There were no obstructions on the road and cars in the lanes next to me were not merging into my lane.

The contact owns a 2021 Nissan Sentra. The contact stated that while the vehicle was parked, his aunt entered the vehicle and attempted to start the vehicle; however, the vehicle failed to respond as needed. Neither a dealer nor an independent mechanic was contacted or made aware of the failure. The vehicle was not taken to be diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 75,094.

While driving all lights come on dash and flash on and off and says system malfunction while doing 50mph. Suddenly car shuts off while driving with my toddler I then have to push my car off the highway without getting hit This has happen 5 times now

Only the drivers window works. The passenger and 2 rear windows won't go up or down.

All power windows stop working except drivers window. None of the window buttons on any of the doors will work when it's cold outside. They start working again in warm weather. Seems like window lock is getting stuck. Sometimes pressing it repeatedly will cause the windows to start working but will stop working again.

While driving, car brakes by itself. There were no cars in front or behind. Red light flash on dashboard and then snatched brakes by itself. Another time, someone came close behind me and my car stopped by itself again nearly causing the driver to run into the back of me. Sensor light come on. Doesn't recognize my key. It's been reset but same problem.

When the sun is out and there is no clouds obscuring the sunlight my vehicle has night time lights running, dimming the interior of my car making it difficult to see the speed and other dashboard requirements while perfectly bright and sunny outside and 0800AM as well as 1500PM. This has been going on for two months and I took it in to two dealerships. One told me check your manual and the other went further and told me "by Nissan standards it is functioning normally." This doesn't make sense to me as the sun is out, it isn't dark or dim and yet when on automatic lighting my Night lights, not my normal running lights,,are on and causing me unable to see what's on my dash. Also whe. The sun is hitting the front of my car my Nissas blinks the collision indicator showing it won't do it as something is obstructing it but this happens when the sun is directly pointing in certain areas of the sky. More so early morning and late evening just as the sun is rising and falling.

The passenger window and back windows will not roll up or down. The only window that works is the drivers window. This car was bought 2 months ago and stopped working last week.

I was traveling at about 40mph when my vehicle, with no traffic in sight, had the automatic emergency brake go off and reduced my speed to 32mph. My safety concern is what if this happens on the freeway or even while raining. if there was a car behind me what if it caused them to get road rage. ***dashcam video available***

The only window that is working properly in my car is the driver window. The other 3 sometimes work and sometimes will not roll down at all. On occasion it goes down but does not come back up or doesn't go back up but half way then stops. I have taken to the dealership twice and still it has not been fixed. Cannot really use the windows at this point as I may not be able to get them back up so definitely cannot leave car unattended in any parking lot or down in certain weather situations.

Front passenger and all rear windows intermittent will not operate.

1. My brakes locked up on my and the warning light came on saying I hit something 2.the only windows that works is the drivers identified 3.my warning lights came on and it started smelling inside the car I shut the car off and the warning light went off so I thought it was OK finished driving home and became sick opened the hood and my battery had smoke pouring out of each side my sinuses were burning, my throat was on fire i was sick the rest of the night i called poison control and they told me what to do

Car emergency stops with no reason. Dangerous. Will cause accident. Needs recalled.

Brake system failed. Car brake petal was all the way to the floor and grinding to stop. The car didn’t fully stop. Car has be inspected 3 times by dealership. No warning lights on. The car automatic brake goes off randomly and breaks out of no where and put me at risk with causing an accident it has been inspected by dealer as well and this continues to happen. Car jerks and looses power while drive check engine light comes on and blinks. The car has been seen twice by dealer for this issue nothing resolved. Almost caused a major accident first time on freeway and again on a busy intersection. Car is very unsafe and not reliable

Only the driver side window goes up and down. Took it to Nissan dealer and they made it work for that minute and said they were ordering parts, it’s been 3 weeks and haven’t heard of them.

The contact owns a 2021 Nissan Sentra. The contact stated while driving in a car wash drive-thru line, the brakes applied independently. The contact stated that the brake warning light was illuminated. The contact also stated an unknown yellow and black warning light was illuminated. The contact stated that she was unable to open or start the vehicle. The contact had the vehicle jump started. The contact took the vehicle to the local dealer but was unable to duplicate the failure. The contact continued to experience the failure. The manufacturer had been informed of the failure. The failure mileage was 20,765.

Vehicle has a inconsistent overnight battery drain. Called Auto Club for a jump start and technician said some Nissans have been experiencing this issue. Drove the vehicle to get the battery and charging system tested, it passed and no problems were found. There is no pattern and it only happens when the vehicle sits overnight. There is enough power to lock and unlock the vehicle but not enough to start the car. Had to purchase a battery booster/jumper so I wont get stranded and not keep calling Auto Club. Once I jumped it twice in a week, and the most has been 5 weeks without the need to jump start it.

the car continues to turn off and draining the battery, on the audio there is a constant static, and lights keep shorting out.

My window on the passanger side does not roll back up. It is stuck in the down position. All my windows do not function with the exception of the driver window.

The air conditioning turns off by itself and the high beams don't work

I have 2021 Nissan Sentra SR. The automatic engine start does not work all of the time. Contact my dealer and they said there have been a lot of complains about this, did contact Nissan corporation they said brig it to the dealer. I did they do not know what it is? May be the frost on the windshield where the electronics are? Who knows? There is a bulletin about this on 2020 Sentra with same issue. It seems to happen with frost on the windshield.

10/5/21-FIRST NOTICED SOMETHING WAS WRONG WHILE BACKING UP VEH. WARNING SIGNAL GOING OFF SHOWING DRIVER SIDE REAR NOTHING BEHIND ME AT THE TIME ALL CLEAR FIGURED IT WAS JUST ? I REVERSED ANYWAY AND TOOK OFF TO STORE WHILE ON MY WAY HOME AROUND 2:30ISH WHILE DRIVING ABOUT 30-40MPH VEHICLE SUDDENLY ACTIVATED THE AUTOMATICE EMERGENCY BRAKING SYSTEM RED LIGHTS ON DASH INDICATING IT WAS ACTIVATED AT THE TIME THERE WAS NO VEHICLE IN FRONT OF ME! I WAS APPROACHING A RAILROAD CROSSING AT THE TIME I HAD MY SON IN THE FRONT SEAT AFTER A FEW SECONDS THE VEHICLE RELEASED THE BRAKES AND I PROCEEDED HOME OF COURSE I WAS SHAKEN UP AND HAD QUESTIONS AS TO WHAT WAS GOING ON? TOOK TO DEALER 2 DAYS LATER DEALER KEPT THERE FOR OVER 5 HOURS AND DURING VEH. UPDATES VIA TEXT FROM DEALER WAS TOLD THEY WERE GOING BACK AND FORTH WITH NISSAN CORP. VIA EMAIL ON TRYING TO RECEIVE ASSISTANCE AS TO HOW TO GO ABOUT REPAIRING THE ISSUE, WAS ALSO TOLD TO PICK UP VEH. DRIVE FOR A WEEK AND RETURN TO CHECK IF OTHER CODES WERE NOTED? SO THEY ADMIT THERE WERE CODES INDICATING THERE WAS A PROBLEM. NOT A WEEK YET TO RETURN TO DEALER UNTIL NEXT WEEK HOWEVER I DRIVE OVER 50MILES A DAY COMMUTE TO WORK AND I AM VERY SCARED THESE DAYS TO DRIVE I ALSO HAVE CLIENTS I MUST TRANSPORT IN MY PERSONAL VEH. FOR WORK PURPOSES WHAT IF SOMEONE GETS HURT? ITS SO STRESSFUL. IM WORRIED!ANY SUGGESTIONS? ALSO, ON NHTSA WEBSITE I FOUND BY VIN NUMBER THE VEH. MADE 2ND,4TH AND 6TH IN ORDER AFTER MINE WHICH IS 0 THIS IS SUSPICIOUS AND TROUBLING.

Car battery has died 3 times since purchase. Dealership says battery is fine. Have only owned the brand new vehicle about 8 weeks!

The vehicle inexplicably drained the battery again. Monday July 12, 2021, the vehicle does not start. I take it to the dealer's service center and they tell me there is no problem with the car or the charging system.

Suddenly the battery ran out on Tuesday, July 6, 2021, 18 days after I bought the car. The car did not want to start from the beeper. When I got into the car to start it, my battery was completely drained. A roadside service technician starts the car with a battery booster. On the way to the auto dealership shop, the vehicle would not accept cruise control. I arrive at the auto dealership workshop and they verify the unit. And according to them it did not duplicate any of the problems that the vehicle presented. Claiming that the charging system was fine and the battery was fine.

Car will not start. Unexplained battery depletion. Trunk will not close when car is not on. Awful customer service at ORR Nissan in Shreveport Louisiana Address: 1240 E Bert Kouns, Shreveport Louisiana, 71105 Their entire operations need to be shut down. Bunch of incompetent druggies.