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moderate Owners of the 2015 Hyundai Sonata have filed 21 NHTSA complaints about the lighting, typically surfacing around 56,000 miles at roughly $250 to repair (U.S. federal records, as of August 2026). Source: NHTSA Office of Defects Investigation. See lighting across all vehicles →
| Model year | lighting complaints |
|---|---|
| 2011 Sonata | 156 |
| 2012 Sonata | 81 |
| 2013 Sonata | 125 |
| 2014 Sonata | 70 |
| 2015 Sonata (this page) | 21 |
| 2016 Sonata | 24 |
| 2017 Sonata | 18 |
| 2018 Sonata | 18 |
| 2019 Sonata | 18 |
No new NHTSA lighting complaint has been filed on this vehicle in over 10 years — the issue may be aging out of the active population.
A turn signal that activates in the opposite direction of what was intended by the driver increases the risk of a crash.
The manufacturer has issued service bulletins covering lighting 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.
This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. Lamp assembly replacement is NOT necessary in most cases. This condition can be eliminated by turning on the lamps with the engine running for several minutes or during normal driving operation.
full bulletin at NHTSA ↗This bulletin provides information regarding condensation related to moisture accumulation in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. The TSB illustrates the various causes of condensation inside the lamp assembly. Lamp assembly replacement is NOT necessary in most cases. This condition can be eliminated by turning on the lamps with the engine running for several minutes, or during normal driving operation.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
Owners of this 2015 Sonata report three distinct lighting problems. First, headlights set to auto mode spontaneously shut off—sometimes for several seconds—when the turn signal is activated, particularly during turns. The dash shows lights on while they're physically off. This happens intermittently and has been going on for years in some cases; dealerships say they cannot reproduce it. Second, turn signals operate backwards or incorrectly: activating the left signal causes the right to flash, or signals delay 5–10 seconds before responding. A prior recall addressed this with a software update, but the problem persists in some vehicles. Third, owners report projector-type headlights create visibility problems on hills and curves—the beam cuts off sharply, casting shadows that block road view, and the light pivots downward on downslopes, severely limiting sight distance. Owners cite this as dangerous for spotting pedestrians and road signs. Fourth, some report interior overhead lights staying on at night, impairing night vision, and a few mention dim headlights overall, bulbs failing repeatedly, or wiring shorts in the low-beam circuit.
Same Hyundai Sonata lighting reports on nearby years: 2012 · 2013 · 2014 · 2016 · 2017
When headlights are set to auto mode at night, activating the turn signal causes headlights and daytime running lights to turn off completely for several seconds. The dash indicator may still show lights on. Lights restore when the turn signal is released or wheel straightens.
When: Intermittent, primarily during nighttime turns; has occurred for multiple years in some vehicles
Symptoms owners cite: Headlights turn off when turn signal is used; Daytime running lights turn off; Dash shows lights on but they are physically off; Headlights restore after straightening wheel or signal release; Most common during 90-degree turns
Repairs/costs cited: Two dealerships reported inability to reproduce the issue. One owner cited $636 repair estimate. Hyundai customer service declined assistance.
Recalls/TSBs owners mention: No recall issued. Dealerships claim inability to diagnose. One prior software update recall for turn signal operation did not resolve this issue.
Turn signals flash in the opposite direction from what the driver intends, or operate intermittently with 5–10 second delays before responding. Left turn signal may trigger right signal flash, then switch to left.
When: At various speeds; failure mileage noted at 58,000 miles in one case
Symptoms owners cite: Left turn signal flashes right without warning; Right turn signal flashes left; 5–10 second delay before turn signal responds; Turn signals operate independently
Repairs/costs cited: One dealership recommended turn signal assembly replacement. One owner reported $125 diagnostic fee quoted.
Recalls/TSBs owners mention: Recall issued for software update to address wrong turn signal display. However, some owners report the issue persists after recall service or their vehicle does not appear in the recall database despite having the problem.
Projector-type headlights cast a sharp cut-off and shadow that significantly impairs visibility. On downslopes or hills, the light beam pivots downward, directing the cut-off line downward onto the road surface, leaving the upper field of vision dark. On flat roads or curves, the focused beam creates shadows that block sight of the roadway. This severely limits driver ability to see pedestrians, animals, and road signs.
When: Occurs on hilly or undulating terrain when descending, and on flat roads at intersections; present throughout vehicle operation
Symptoms owners cite: Headlight beam appears driven into road surface on downslopes; Upper windshield portion appears dark as if covered by black sheet; Visibility reduced to only a few feet in front of car; Road safety signs not illuminated on down-slopes; Poor visibility around corners at dark intersections; Limited peripheral vision
Repairs/costs cited: No repairs cited. One dealership stated this defect is 'normal' and owners have been instructed to claim as such.
Recalls/TSBs owners mention: No recall. Dealership informed owners this is normal operation and other owners have complained but factory directs dealers to classify as expected behavior.
Overhead interior lights remain on continuously during nighttime driving and cannot be turned off. This impairs night vision and peripheral vision similar to a passenger shining a flashlight into the driver's eyes.
When: Occurs at night; described as ongoing condition
Symptoms owners cite: Overhead lights remain on and cannot be turned off; Impairs night vision; Interferes with peripheral vision; Similar to flashlight shining in driver's eyes
Low-beam bulbs fail repeatedly or do not seat properly in the socket. Bulbs are replaced but fail again within months. In one case, the driver-side bulb cannot be extracted from the fixture.
When: One owner replaced one bulb four times in three years; bulb failures began around 30k miles
Symptoms owners cite: Bulb burnout; Bulb will not stay in fixture; Intermittent bulb operation requiring reinstallation; Bulb cannot be removed from fixture (driver left side)
Repairs/costs cited: Bulb replacement attempted multiple times; one owner reported inability to remove bulb from driver-left fixture.
Short in wiring for the left low-beam headlight causes the system to falsely indicate bulb replacement is needed and intermittently cuts off the light during operation.
When: Intermittent during vehicle operation
Symptoms owners cite: Unnecessary bulb replacement indicator; Intermittent low-beam cut-off during operation; Left low-beam affected
Headlights shut off completely for 4 to 45 seconds during nighttime driving. Failures can occur 0 to 6 times in a 25-minute drive. Issue does not occur when vehicle is stationary.
When: Began around 30,000 miles; primarily during nighttime driving
Symptoms owners cite: Headlights turn off without warning; Daytime running lights turn off; Duration of 4 to 45 seconds per failure; Multiple occurrences per drive
Repairs/costs cited: Dealership unable to diagnose since problem does not occur while stationary.
Low-beam headlights are too dim to adequately light the roadway, making night driving hazardous.
Symptoms owners cite: Headlights too dim to light roadway
Instrument cluster displays headlight low-beam warning with a triangle and exclamation mark indicator.
Symptoms owners cite: Headlight low and triangle exclamation warning appears
Lights turn on when the car is parked with the engine off, primarily during nighttime hours.
When: Nighttime; occurred twice in two months
Symptoms owners cite: Lights activate with engine off and vehicle parked
Synthesized from 21 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
Inside lighting of vehicle will not turn off. This interferes with night vision and also disturbs peripheral vision. This is like a passenger shining a flashlight into your eyes from the side. This is a very unsafe condition while driving at night.
It's a documented issue but not catastrophic. 21 complaints have been filed. Repairs average $250 and most owners catch it before it causes a breakdown.
Across the 10 complaints that reported odometer mileage, most lighting failures cluster between 30,000 and 62,000 miles, with the median around 56,000. A quarter of owners report trouble before 30,000; a quarter make it past 62,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
Independent shops typically charge around $250 for lighting 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.
Yes — 1 active recall(s) cover lighting issues on this vehicle. Recall fixes are always free regardless of mileage or warranty status. Use the VIN decoder at the top of the page to check if your specific vehicle is affected.