2021 Nissan Sentra Driver assistance Problems

My 2021 Nissan Sentra has experienced multiple false Automatic Emergency Braking (phantom braking) events where the vehicle suddenly applies the brakes despite there being no vehicle, pedestrian, or obstacle in its path. This issue occurred before and after my vehicle was serviced by AutoNation Nissan Chandler on June 12, 2026. Despite recent dealership service, the problem continues to occur. The unexpected braking creates a serious safety hazard because it can cause the vehicle to slow or stop unexpectedly in traffic, increasing the risk of a rear-end collision or other accident. I am also concerned that these repeated sudden braking events may be causing excessive stress or premature wear to vehicle components such as the engine mounts, suspension, and struts. Vehicle Information: Year: 2021 Make: Nissan Model: Sentra Mileage: Approximately 139,659 miles I am submitting this complaint because I believe this recurring phantom braking issue is a significant safety concern that should be investigated.

NHTSA ID

11751232

Incident

Jul 17, 2026

The scope of repair required fixing a recalled tie rod that suffered a catastrophic failure, which directly caused the vehicle’s ADAS, Advanced Emergency Braking (AEB), and collision detection systems to crash. Berman Nissan promised a legally compliant, safe repair but breached this agreement by returning an unsafe vehicle, failing to road-test the steering component (verified by identical check-in/out mileage), and intentionally scrubbing trouble codes to conceal active safety failures. Staff explicitly refused all safety assistance, failed to secure my signature on any authorization paperwork from tow to pick-up, and Nissan corporate stated they were 'not legally required' to resolve the hazards. Service personnel stonewalled the issue, and management only escalated the matter to Service Director Mark Yalda after I disclosed I possessed concrete video proof of the identical mileage and unsigned invoices.

NHTSA ID

11750579

Incident

Jul 10, 2026

Alternator needed replacement Front windshield needed replacement Unfortunately this kicked off the malfunction warning. All Nissan can say is it’s the ADAS 2 controller. They are unable to determine part numbers. However the alternator and windshield replacement kicked off the malfunction warning.

NHTSA ID

11742845

Incident

Jun 8, 2026

Several issues since purchasing vehicle. The front collision sensor malfunction. Came to an abrupt stop several times while on the freeway due to failed sensor. Narrowly avoided major collisions. Also, have had to replace batter every year along with brakes and tires. My suspension is awful. The brakes are crap and have consistently had to address worn tires in one side. Electric panel shit off and key fob malfunctions. So many issues and so much unnecessary repairs with no real results

NHTSA ID

11739981

Incident

May 1, 2026

Some time while driving on empty roads Fuel Economy warning light beeping and automatically emergency brake . It happened on me more than 5 times.

NHTSA ID

11722302

Incident

Feb 26, 2026

AEB system is initiating emergency braking at random times. Both on surface street, and the freeway on ramp. With and without weather, and without any obstacles or cars in the way. The vehicle comes it a complete stop when this happens and puts the driver in significant danger. At this point the dealer observed warning code on the dashboard, but it did not engage. Message relating to that the AEB may deploy. When it does happen Emergency Brake is on the dashboard. After it happens vehicle can resume driving. Various indicines happened last year. We took it to Ken Garff Nissan (11155 So. Jordan Gateway in South Jordan, Ut. 84095. They could not find the problem or get the problem reproduced. They recommended turning off the safety features when driving. We have done that for a year. Then on 1-15-26, the safety system was on and the break engaged and brought the car to a stop on the freeway on ramp. The car is now at Ken Garff Nissan (777 So. West Temple SLC, Utah) It has been there for 2 weeks. This is the dealer that saw the code, but the system did not engage.

NHTSA ID

11714211

Incident

Jan 15, 2026

Rattling noise coming from the belt assembly. Tensioner pulley is shaky and alternator had a piece brake off causing metal shavings to fly around.

NHTSA ID

11710130

Incident

Jan 9, 2026

The check engine light comes on with a malfunction symbol. The car has delay acceleration, jerks, hard shifts.

NHTSA ID

11692007

Incident

Mar 13, 2024

Since having my Nissan 2021 Sentra I have for one, had to replace the battery in it twice. On a more serious note, it is now stopping the car at random and unnecessary times stating an object is in front of me. It happens once a while ago and I did not have any other signs, and it was just for a second, so I tried not to stress about it. Now it is happening more often and just this morning happened three times. Causing my car to come to a complete stop, it is very dangerous and I am not sure what I am to do about it.

NHTSA ID

11691787

Incident

Oct 7, 2025

The competent that continues to fail is the emergency response breaks. They continue to stop at random times creating a very unsafe environment while I drive daily. I do have this on video and my car is available for inspection at any time. I just recently finally got the emergency break system on video since it is so random and plan on making an appointment with my local Nissan Dealer. I did have a visit recently regarding the recall for the tire rods. My car continues to make odd sounds and I paid over $1000 to get it fixed with all new tires. These problems have began since the day I got my car. I have bought over 10 wheels due to issues with the tire rods. The video we finally were able to get was last night regarding the emergency stop systems, it does not let me add to the complaint but I can send to any email if needed as well as the local Nissan dealer did inspect and work on the car for my tires and tire rods.

NHTSA ID

11687027

Incident

Sep 13, 2025

Steering wheel vibrates and has become difficult to steer. Occurs often. While on the freeway, vehicle has come to a stop in 2 different occasions, it just stopped for 4-5 seconds. Back up camera is blurred, mainly in the center.

NHTSA ID

11649039

Incident

Mar 4, 2025

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.

NHTSA ID

11641476

Incident

Feb 1, 2025

The contact owns a 2021 Nissan Sentra. The contact stated while driving at an undisclosed speed, the automatic emergency braking system engaged while there were no nearby vehicles or pedestrians. The contact stated that the failure recurred several times while driving. Additionally, the contact stated that the message "System Malfunction" was displayed. The vehicle was taken to the dealer several times; however, the failure could not be replicated. The vehicle was not repaired. The manufacturer was made aware of the failure, but no assistance was provided. The failure mileage was approximately 200.

NHTSA ID

11618036

Incident

Oct 4, 2021

Mileage

200 mi

The car has been towed and moved to another state which is New Jersey and it is being held at an auction company. The car needs to be picked up by Nissan of Garden City and taken back to the dealer shop for the safety recall.

NHTSA ID

11617714

Incident

Jul 21, 2024

My ABS light randomly come on along side of traction control, front and rear collision assistance lights. Car has had electrical problems since I got it such as sometimes bright headlights won’t come on( they just stay on the dim regardless of what you do) the radio will just freeze and not work at all. Have to unhook the battery to get radio to even reset or even wait days for it to do it itself. DO NOT RECOMMEND THIS CAR. nothing but electrical problems since I’ve gotten it. And it only have 50,000 miles and all regular maintenance has been done

NHTSA ID

11603078

Incident

Jul 17, 2024

The automated break system came on while I was driving 2 times within 3 days without anything being in front, the back or on the side of the car. When this happened there was a few beeping noise and a quick red flash on the dashboard that said maintenance.This started happening the next day after getting an oil change from the Nissan dealership. My safety was at risked because when the car suddenly and unexpectedly stopped it jerked my body forward causing my neck to become sore. This can cause greater injury or worst if I was going any faster. If someone was behind me it could cause them to crash into me which would be doing the opposite of the purpose of the safety feature. I took the car in to the dealership and nothing could be done because there wasn't a code and it didn't happen in the presence of the mechanic. It could be a sensor issue but I don't know and the mechanics seem to be just as clueless and very dismissive. I find this to be unacceptable that I must drive around with a car that can break abruptly at any given time. I do not feel safe driving this car and it should be a safety recall on this issue. I looked online and seen other people complaining about the same issue so I'm sure Nissan knows what's going on and aren't doing anything about it.

NHTSA ID

11581894

Incident

Apr 7, 2024

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.

NHTSA ID

11567102

Incident

Jan 21, 2024

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.

NHTSA ID

11563312

Incident

Nov 1, 2023

The contact owns a 2021 Nissan Sentra. The contact received notification of NHTSA Campaign Number: 23V628000 (Back Over Prevention) however, the part to do the recall repair was unavailable. The local dealer was contacted, and it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact experienced the failure and stated that while the operating the vehicle, there was a clicking sound while making left turns. The vehicle was driven to the local dealer who determined that the front passenger’s side and driver's side tie rods were cracked. The failure mileage was 60,000. Parts distribution disconnect.

NHTSA ID

11561492

Incident

Dec 1, 2023

Mileage

60,000 mi

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***

NHTSA ID

11555856

Incident

Nov 17, 2023

This has happened twice while driving down the road, 2021 Nissan Sentra AEB system locked up the brakes with nothing in front of vehicle to cause the system to be activated.

NHTSA ID

11551744

Incident

Oct 24, 2023

I brought this car in January 2023 and the Forward Emergency Braking keeps popping on while driving. There are zero cars that were in front of me. This is the 4th time this has happened. With the last 2 incidents happening within the last 24hrs . 10/21/23 & 10/22/23. This is issue that may cause accident.

NHTSA ID

11551243

Incident

Oct 22, 2023

Vehicles will slams on brakes as if it is trying to avoid something in front of the vehicle. This has randomly happened several times at different driving speeds. This has been reported to dealership with no resolution because they cannot duplicate. In addition, I have had the same serious recall involving the Tie Rod for my vehicle and there is no resolution. The dealership will tell you how serious the issue is and that there is stop sale on these vehicles to entice you to trade in the vehicle instead of trying to make it right with the consumer.

NHTSA ID

11548994

Incident

Sep 30, 2023

So while driving my car, no car infront of or anything running out in the road. Going 45 mph my car automatically slammed on brakes by itself. Causing the car behind me to swing around me to avoid hitting me in my rear. A similar situation happened back in May 2023 resulting me to put the car in the shop & was told it was corrected.

NHTSA ID

11540158

Incident

Aug 21, 2023

The AEB system will activate sporadically in traffic and open road (I.e interstate) this can cause a serious crash if the car locks it up running 70 mph and tries to emergency stop It has been to the dealer for this issue with no resolve No prior warning when this happens and has been continuously more frequent since 30k miles

NHTSA ID

11539938

Incident

Aug 18, 2023