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full bulletin at NHTSA ↗2018 Nissan Sentra electrical problems
moderate Owners of the 2018 Nissan Sentra have filed 31 NHTSA complaints about the electrical, typically surfacing around 39,000 miles at roughly $850 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →
Failure mileage
Complaints
31
Recalls
0
Avg fix
$850
| Model year | electrical complaints |
|---|---|
| 2014 Sentra | 23 |
| 2015 Sentra | 17 |
| 2016 Sentra | 33 |
| 2017 Sentra | 27 |
| 2018 Sentra (this page) | 31 |
| 2019 Sentra | 56 |
| 2020 Sentra | 38 |
| 2021 Sentra | 37 |
| 2022 Sentra | 21 |
1crash
When does it fail?
Of the 31 electrical complaints filed for the 2018 Nissan Sentra, here's the actual mileage breakdown — failures cluster heaviest at 100,000-125,000 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
Owners have filed 31 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical 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.
CAN COMMUNICATION CODES – DIAGNOSTIC TIPS AND GUIDELINES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
full bulletin at NHTSA ↗CAN COMMUNICATION – NETWORK DIAGNOSTIC FLOW CHART This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
full bulletin at NHTSA ↗VEHICLE KEY NOT DETECTED / AUTHENTICATED, ENGINE WILL NOT START This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
full bulletin at NHTSA ↗SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin is no longer active. To access infotainment software updates via the Infotainment Software Update Utility: Select SPECIALTY TOOLS, and then select Infotainment Software Updates on the left side of ASIST. Please discard previous versions of NTB23-018.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The front radar sensor and automatic emergency braking (AEB) system dominate complaints. Owners consistently report false "front radar obstruction" warnings that disable safety features—cruise control shuts down, and the vehicle either brakes unprompted or activates collision warnings with nothing ahead. Multiple owners replaced the radar sensor only to have the problem persist immediately after. Dealers acknowledge no fix is available from Nissan; parts are backordered with some owners waiting a month or more while being told over 1,000 vehicles are ahead in the queue.
Push-button start failures strand owners, particularly between 21,500–23,500 miles. Vehicles refuse to crank until the brake sensor resets, sometimes taking 20+ minutes in heat. Repeated occurrences on single vehicles have occurred, and battery replacements do not resolve it.
Interior and exterior lights malfunction: headlights fail, seatbelt and oil warning lights don't illuminate, and dashboard lights short out. One recall (21V135000) did not fix the MIL. AC systems blow hot air with no identifiable cause. Fuel gauges show gas remaining when tanks are empty, and backup cameras flicker or black out. Electrical wiring failures following moisture exposure remain undiagnosed after weeks in the shop. The brake light switch fails silently, leaving brake lights dark.
Same Nissan Sentra electrical reports on nearby years: 2016 · 2017 · 2019 · 2020 · 2021
Failure modes owners describe
Front Radar Sensor / Automatic Emergency Braking (AEB) System Malfunction
The front-facing radar sensor triggers false 'unavailable' or 'obstruction' warnings even when no obstruction is present, causing the automatic emergency braking system to malfunction. Vehicle may brake unprompted or fail to brake when needed, and cruise control may be disabled. Repair attempts including sensor replacement have not resolved the issue.
When: Occurs within first year of ownership; reported at mileages ranging from 14,000 to 180,000 miles; sometimes within weeks of purchase
Symptoms owners cite: Constant 'Front Radar Unavailable' or 'Front Radar Obstruction' warning on instrument panel; AEB warning light with persistent beeping or alarm sound; Vehicle brakes unexpectedly without obstruction ahead; Cruise control disabled when sensor warning appears; Deactivated radar symbol on dash; False collision detection alerts while driving at highway speeds
Codes mentioned: Front Radar Sensor Error, AEB Malfunction Code
Repairs/costs cited: Sensor replacement attempted on multiple vehicles with failure persisting after repair; dealers report no fix available from Nissan; one owner charged $5,754.42 for AEB sensor repair out of warranty
Recalls/TSBs owners mention: Nissan dealers state no fix is available; parts on backorder affecting over 1,000 vehicles; some dealers recommend continuing to drive vehicle while waiting for parts; Nissan contacted in multiple complaints with case numbers issued (e.g., 37101150); no recalls identified by owners
Brake Sensor / Push-Button Start Failure
Brake sensor malfunction prevents vehicle from starting via push-button ignition. Vehicle becomes stranded and will not start until sensor resets, sometimes taking 20+ minutes in hot conditions. Occurs repeatedly at specific mileage ranges.
When: Between 21,500–23,500 miles for multiple occurrences on one vehicle; also reported at 51,000 miles and other mileages; varies by vehicle
Symptoms owners cite: Vehicle will not start despite battery having power; Push-button ignition unresponsive; Vehicle becomes stranded until sensor resets; Extended wait time (20+ minutes) before engine turns over
Codes mentioned: Brake Sensor Fault
Repairs/costs cited: Battery replacement attempted but failure persisted; owners report issue is common and well-documented online
Keyless Ignition / Push-Button Start Failure
Push-button start system fails to engage engine even after key fob battery and car battery replacement. Issue recurs shortly after temporary resolution.
When: Reported at various mileages; recurring issue within days of initial repair attempt
Symptoms owners cite: Engine will not turn over via push-button start; No engine cranking despite electrical power present; Problem returns after temporary fix
Codes mentioned: Keyless Ignition System Fault
Repairs/costs cited: Battery replacements (fob and vehicle) attempted without permanent resolution
Backup Camera Flickering and Blackout
Backup camera display blacks out and flickers intermittently, particularly after rain or moisture exposure. Dealer unable to locate cause despite inspection.
When: Early in ownership; first few months after purchase
Symptoms owners cite: Backup camera screen blacking out intermittently; Screen flickering on and off; Display failure after rain
Repairs/costs cited: Dealer inspection found no identifiable issue
Air Conditioning System Failure
AC system blows hot air and loses cooling capacity completely. Despite multiple repair attempts, mechanics cannot identify or fix the underlying cause.
When: Early in ownership; within first year
Symptoms owners cite: AC blowing hot air instead of cold; Complete loss of air conditioning; Potential overheating when AC in use
Repairs/costs cited: Repair attempts made with no cause found
Electrical Wiring / Electrical System Malfunction
Generalized electrical system failure following water exposure (puddle contact). Vehicle loses proper operation and remains in dealer shop unrepaired for extended periods.
When: Days after water contact or oil change service
Symptoms owners cite: Car stops moving or runs improperly; Wiring system malfunction after water exposure
Repairs/costs cited: Nissan identified as electrical wire problems; vehicle held at dealer for nearly 3 weeks without repair completion
Interior and Dashboard Light Failures
Multiple interior and dashboard lights short out or fail to illuminate, including headlight assembly issues and seatbelt reminder light. Some lights require specific on/off sequence to work.
When: Reported at various mileages; some following headlight assembly replacement service
Symptoms owners cite: Headlight assembly bulb failure; High beam out after left headlight assembly replacement; Oil pressure warning light does not illuminate; Seatbelt reminder light does not illuminate; Interior lights short out intermittently; Overhead lights and screens fail unless turned on specific way; Radio and temperature control display lights out
Recalls/TSBs owners mention: Recall 21V135000 (Exterior Lighting) issued; however, MIL remained illuminated after recall repair and unknown additional repair also failed to resolve
Brake Light Switch Failure
Brake light switch fails, causing rear brake lights not to illuminate. Safety recall notification received by owner but dealer unable to schedule repair appointment.
When: Unspecified mileage
Symptoms owners cite: Rear brake lights not illuminating
Recalls/TSBs owners mention: Safety recall identified; owners unable to book dealer appointments
Fuel Gauge Malfunction
Fuel gauge displays incorrect fuel level, showing remaining range when vehicle actually runs out of gas. No warning lights illuminate despite empty tank.
When: Unspecified mileage
Symptoms owners cite: Fuel gauge shows 60–120 miles remaining when tank is actually empty; No check engine light or fuel warning light illuminates; Vehicle loses power mid-drive on uphill grades; Power steering fails when vehicle stalls due to fuel depletion
Instrument Cluster / Malfunction Indicator Light (MIL) Persistence
Malfunction Indicator Light (MIL) remains illuminated after recall repair work. Subsequent repair attempts by dealer do not resolve the fault.
When: At approximately 105,816 miles; after recall 21V135000 repair
Symptoms owners cite: MIL remains illuminated after recall repair; Unknown malfunction warning message displayed; Vehicle lost motive power on one occurrence
Repairs/costs cited: Recall 21V135000 remedy did not fix failure; unknown second repair also unsuccessful
Recalls/TSBs owners mention: NHTSA Campaign 21V135000 (Exterior Lighting) issued; manufacturer referred contact back to dealer
Synthesized from 31 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
My gas gauge said 60 miles until fill up, I ran out of gas with no warning, no check engine light and no gas light, in the middle of the street. I was not able to wheel it to the side as I was going uphill at the time and the steering went out. Traffic had to avoid hitting me as I was completely locked up. There is nothing previously wrong with the car.
The contact owns a 2018 Nissan Sentra. The contact received notification of NHTSA Campaign Number: 21V135000 (Exterior Lighting) and the vehicle was taken to the dealer for the recall repair; however, the Malfunction Indicator Light (MIL) remained illuminated after the repair. The vehicle was taken back to the dealer where an unknown repair was completed but the failure persisted. The vehicle was…
Had electrical 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 electrical problem on the 2018 Nissan Sentra?
It's a documented issue but not catastrophic. 31 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Across the 22 complaints that reported odometer mileage, most electrical failures cluster between 14,000 and 42,300 miles, with the median around 39,000. A quarter of owners report trouble before 14,000; a quarter make it past 42,300. 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 $850 for electrical 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 electrical?
No active recalls currently cover electrical 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.