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full bulletin at NHTSA ↗2018 Nissan Sentra brakes problems
severe Owners of the 2018 Nissan Sentra have filed 14 NHTSA complaints about the brakes, typically surfacing around 43,837 miles at roughly $450 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See brakes across all vehicles →
Failure mileage
Complaints
14
Recalls
0
Avg fix
$450
| Model year | brakes complaints |
|---|---|
| 2014 Sentra | 27 |
| 2015 Sentra | 11 |
| 2016 Sentra | 10 |
| 2017 Sentra | 9 |
| 2018 Sentra (this page) | 14 |
| 2019 Sentra | 14 |
| 2020 Sentra | 14 |
| 2021 Sentra | 9 |
| 2022 Sentra | 3 |
2fires
When does it fail?
Of the 14 brakes complaints filed for the 2018 Nissan Sentra, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA brakes complaint has been filed on this vehicle in over 6 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering brakes on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
ABS/VDC CAN DIAGNOSIS INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The brake complaints cluster around a few persistent problems. Most common is the automatic emergency braking sensor repeatedly throwing false obstruction warnings ("Front Radar Unavailable") even immediately after dealership replacement, calibration, and cleaning. Owners report the warning light and dashboard beeping recur within a day or two of service, sometimes even during the same test drive home. The system also unexpectedly slows the vehicle while driving, unrelated to any driver input, and owners cannot reliably restore normal acceleration without lifting off the gas pedal and pressing hard again.
Brake light switches fail to illuminate taillights, also intermittently, and are replaced multiple times with no permanent fix. Related to this, the brake pedal/push-button start interlock fails—the vehicle won't start even when both the brake and ignition button are pressed—forcing owners to tap the brake repeatedly until the vehicle cooperates. One owner made six dealer visits for this recurring fault over 2.5 years.
The most severe narrative describes brakes locking on at 45 mph, causing brake pads to smoke and front tires to overheat so badly they melted wheel weights. The dealer diagnosed faulty brake angle and steering angle sensors requiring replacement.
One owner cites a recall for brake fluid buildup risking total brake loss, though details are limited. Multiple owners note Nissan is aware of the AEB sensor problem across multiple vehicles but has not issued a recall or permanent fix.
Same Nissan Sentra brakes reports on nearby years: 2015 · 2016 · 2019 · 2020
Failure modes owners describe
Automatic Emergency Braking (AEB) sensor malfunction
Sensor reports false obstruction warnings ('Front Radar Unavailable') or becomes unresponsive. The forward collision avoidance system warning light illuminates repeatedly during normal driving. Dealership attempts include sensor replacement, calibration, and cleaning, but the warning recurs shortly after repair, sometimes within one day.
When: Occurs early in ownership (one report at 3 weeks; another at 1 day; one at 30,000 miles). Happens intermittently during highway and local street driving, and also while stationary.
Symptoms owners cite: Dashboard warning 'Front Radar Unavailable' or 'Radar Unavailable' displays repeatedly; AEB system warning light illuminates at random intervals; Continuous dinging/beeping from dashboard; Vehicle slows down unexpectedly while driving, unrelated to driver input; System deactivates itself, disabling cruise control
Repairs/costs cited: Dealership service includes sensor replacement (multiple times in some cases), sensor calibration, and cleaning of sensor lens. Despite these interventions, failures recur. One owner reports dealership has acknowledged the issue affects multiple vehicles but has no permanent fix.
Recalls/TSBs owners mention: Nissan is aware of the issue (per owner reports). Some owners reference a potential recall (NHTSA Campaign 21V135000 for Exterior Lighting mentioned in one narrative, though that is exterior lighting, not AEB). No recall specifically issued for AEB sensor defect per owner complaints.
Brake light switch failure
Brake light switch loses function intermittently or permanently, preventing brake lights from illuminating. Replacement is temporary; failure reoccurs the same day or shortly thereafter. One owner notes their VIN was excluded from a recall despite matching symptoms.
When: Failures occur during normal vehicle operation. One report mentions the issue happened on the same day as repair.
Symptoms owners cite: Brake lights do not illuminate when brake pedal is depressed; Vehicle will not start when push-to-start button and brake pedal are depressed together; Warning lights and dashboard malfunction indicators appear
Repairs/costs cited: Brake light switch replacement performed by dealership and independent master mechanic. Repair is ineffective; switch fails again within hours or days.
Recalls/TSBs owners mention: A recall exists for this model year related to brake light switch/rear stop lamp (referenced in one narrative as covering ABS, rear stop lamp switch, Engine and Cruise Control). However, not all VINs are included in the recall despite owner exhibiting identical symptoms.
Brake pedal / push-button start interlock failure
Brake switch fails to properly register brake pedal depression, preventing the engine from starting when the push-button ignition is pressed. The fault is intermittent and occurs only when the vehicle is stationary (during start attempts).
When: Intermittent failures over 2.5 years of ownership; one owner reports 6 service visits for the same issue.
Symptoms owners cite: Engine will not start when push-to-start button is pressed and brake pedal is depressed; Requires tapping the brake pedal multiple times before the vehicle will start; Vehicle is effectively stranded until the fault resolves or repair is completed; Problem occurs only at startup (vehicle stationary)
Repairs/costs cited: Dealership service address this issue; specific repair details not provided in narratives. One owner reports 6 service visits over 2.5 years for the same recurring problem.
Unintended acceleration and loss of brake function
Brake system fails during normal driving, causing the vehicle to decelerate uncontrollably or become non-responsive to accelerator input. In one severe case, brakes locked on while vehicle was being driven, causing extreme heat buildup. Brake pads smoked and front tires overheated, melting wheel weights.
When: At 58,972 miles. Vehicle was depressing accelerator but brakes were stopping the vehicle without driver input.
Symptoms owners cite: Brakes fail to function properly while driving at 45 mph; Vehicle slows unexpectedly despite accelerator pedal depression; Brake components overheat; brake pads smoke; Front tires become dangerously hot, melting wheel weights; Unintended acceleration while attempting to park
Repairs/costs cited: Dealership diagnosed faulty brake angle sensor and brake/steering angle sensor. Both sensors required replacement. One owner's brakes were replaced (pending repair at dealership, not completed).
Recalls/TSBs owners mention: Manufacturer made aware of failure in first narrative; case number provided and contact referred to NHTSA. Recall applies to another narrative (ABS, rear stop lamp switch, Engine and Cruise Control) covering brake-related repairs.
Brake fluid accumulation / loss of brake pressure
One owner reports a recall due to fluid buildup that can cause complete loss of brakes. Details are sparse, but the owner purchased the vehicle from a used-car dealer without disclosure of the recall.
When: Timeline not specified; owner recently purchased vehicle from Carvana.
Symptoms owners cite: Recall notification indicates risk of brake fluid buildup; Potential for complete brake failure
Repairs/costs cited: Owner discovered recall via VIN search; repair not yet performed. Owner seeks immediate resolution.
Recalls/TSBs owners mention: Recall exists but was not disclosed to the owner by the used-car seller.
Engine start failure and rough idle
Vehicle fails to start when push-to-start button is depressed. When the engine does start, RPM surges to 5,000 and a burning smell is present during driving. One narrative mentions the vehicle was previously serviced for a separate exterior lighting recall.
When: At 19,127 miles.
Symptoms owners cite: Engine fails to start when push-to-start button and brake pedal are depressed; RPM surges to 5,000 when accelerator pedal is depressed; Burning smell present during driving
Repairs/costs cited: No repair documented in narrative.
Recalls/TSBs owners mention: Manufacturer not made aware of this specific failure.
Synthesized from 14 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
On 12/16/19 I reported an issue with the automatic brake system warning it's unavailable. I've had the vehicle in 3 times to fix the issue at metro Nissan in montclair california. They can't fix the problem and know about it from other vehicles. They have now chosen to blame me for the issue. This dealership is the worst possible. Nissan is well aware of the issue and doesn't have a fix. The…
Automatic emergency braking system sensor frequently lights up with a warning radar unavailable while driving on the highway and local streets. I just got this car and after one day I had to take it back to the dealer. First they said they would replace the sensor. After four days in the shop they said they cleaned the sensor and cleared the codes. They also calibrated the sensor. The next day it…
Emergency breaking system sensor seems to say there is something obstructing front car its faulty/bad sensor just purchased vehicle.
Had brakes trouble with your 2018 Nissan Sentra?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the brakes problem on the 2018 Nissan Sentra?
It's a meaningful issue. 14 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $450.
At what mileage does the brakes typically fail?
Across the 10 complaints that reported odometer mileage, most brakes failures cluster between 28,425 and 45,000 miles, with the median around 43,837. A quarter of owners report trouble before 28,425; a quarter make it past 45,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $450 for brakes repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to brakes?
No active recalls currently cover brakes issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2018/Nissan/Sentra.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.