2021 Nissan Sentra driver assistance & safety tech problems
Updated from NHTSA data · How we count
43 owners have reported driver assistance & safety tech problems with the 2021 Nissan Sentra, 33% of all complaints about this model year. The typical problem appeared around 8,591 mi.
- Driver Assistance & Safety Tech complaints
- 43
- Crashes
- 2
- Fires
- 0
- Injuries
- 3
- Related recalls
- 1
- Median mileage
- 8,591 mi
Specific components reported
Driver Assistance & Safety Tech covers: Automatic emergency braking, lane keeping, backup camera, stability and traction control.
| Component | Complaints |
|---|---|
| Forward collision avoidance: automatic emergency braking | 29 |
| Forward collision avoidance: warnings | 15 |
| Lane departure: warning | 3 |
| Forward collision avoidance | 1 |
| Back over prevention | 1 |
| Lane departure: assist | 1 |
| Forward collision avoidance: adaptive cruise control | 1 |
| Back over prevention: rearview system braking | 1 |
| Back over prevention: warnings | 1 |
Driver Assistance & Safety Tech complaints across Nissan Sentra years
Mileage when the problem appeared
Related recalls
- BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Nissan North America, Inc. (Nissan) is recalling certain 2019-2021 Altima and 2020-2021 Sentra vehicles. Damage to the camera harness can cause distortion or loss of the rearview camera display image. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Risk: A rearview camera that does not properly display an image can reduce the driver's rear view, increasing the risk of a crash.
Remedy: Dealers will inspect the rearview camera and harness for damage and replace them as necessary. If no damage is found, the dealer will apply protective tape and reroute the rearview camera harness. Repairs will be performed free of charge. Owner notification letters are expected to be mailed October 19, 2023. Owners may contact Nissan's customer service at 1-800-867-7669. Nissan's number for this recall is R23C3.
What owners say
- Filed Sep 30, 2026CABrakesDriver Assistance & Safety Tech
I purchased this vehicle brand new in 2021. Since then, I have experienced a very concerning safety issue on multiple occasions involving the automatic emergency braking system. While driving normally, with the vehicle operating without any apparent problems, the emergency braking system has suddenly activated and warning lights have appeared on the dashboard, even though there was no vehicle, pedestrian, object, or other obstruction in front of me that would have required…
NHTSA complaint #11768165 · source - Filed Jul 18, 2026AZDriver Assistance & Safety Tech
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…
NHTSA complaint #11751232 · source - Filed Jul 15, 2026ILDriver Assistance & Safety TechSteering
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…
NHTSA complaint #11750579 · source - Filed Jun 8, 2026AKDriver Assistance & Safety Tech
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 complaint #11742845 · source - Filed May 26, 2026TXDriver Assistance & Safety TechSuspension
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…
NHTSA complaint #11739981 · source - Filed Mar 5, 2026TXDriver Assistance & Safety Tech
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 complaint #11722302 · source - Filed Jan 29, 2026UTBrakesDriver Assistance & Safety Tech
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…
NHTSA complaint #11714211 · source - Filed Oct 7, 2025INBrakesDriver Assistance & Safety TechElectrical System
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…
NHTSA complaint #11691787 · source - Filed Sep 13, 2025PABrakesDriver Assistance & Safety TechWheels & Tires
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…
NHTSA complaint #11687027 · source - Filed Mar 18, 2025AZDriver Assistance & Safety TechAcceleration & Cruise ControlSteering
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 complaint #11649039 · source - Filed Feb 8, 2025CADriver Assistance & Safety TechElectrical System
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 complaint #11641476 · source - Filed Oct 4, 2024200 miPADriver Assistance & Safety Tech
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…
NHTSA complaint #11618036 · source
Other 2021 Nissan Sentra problem areas
- Steering (40)
- Electrical System (38)
- Brakes (25)
- Other / Unknown (19)
- Engine (7)
- Lighting (6)
- Suspension (6)
- Wheels & Tires (6)
- Acceleration & Cruise Control (6)
- Body & Structure (4)
- Transmission & Drivetrain (4)
- Visibility & Wipers (2)
- Seats & Seat Belts (1)
Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology