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 ↗2010 Hyundai Genesis Coupe lighting problems
moderate 10 complaints filed with NHTSA · avg repair $250 · see lighting across all vehicles →
Failure mileage
Complaints
10
Recalls
0
Avg fix
$250
When does it fail?
Of the 10 lighting complaints filed for the 2010 Hyundai Genesis Coupe, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 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 lighting complaint has been filed on this vehicle in over 7 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 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 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 ↗HYUNDAI: HIGH MOUNTED STOP LAMP MOUNTING SCREWS REPLACEMENT.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The dominant complaint across these ten narratives is headlights shutting off intermittently when turn signals are activated. Owners describe lights going dark for 2-5 seconds at any driving speed, whether moving or stopped, during night driving. The lights typically come back on once the turn signal is deactivated or the headlight stalk is jiggled. One owner pulled over unsafely on the freeway when lights went out completely for about 5 seconds. Multiple owners note this happens almost every time they drive with headlights on while signaling.
Related electrical issues include audible popping sounds (described as short circuit noise) when switching headlights from auto to on position. Turn signals also trigger this noise. One dealer reportedly attempted repair, but the failure recurred.
Separately, brake lights have failed to illuminate on at least one vehicle at 102,000 miles, persisting even after manufacturer recall service in 2014 and 2016.
Low-beam headlight pattern is inadequate on hillier terrain—lights project downward like spotlights rather than flooding the road, creating a dark horizontal line that moves with road bumps and completely obscures the road ahead when descending hills. Dealers confirm the lights meet specification but refuse adjustment.
One owner found the up and down arrow markings on both headlight housings are backwards, causing confusion during adjustment and internal projector misalignment.
Failure modes owners describe
Headlights turn off when turn signals activated
Headlights intermittently shut off completely when turn signals are engaged, remaining dark for 2-5 seconds before coming back on once the turn signal is deactivated or the headlight stalk is jiggled. Occurs during night driving and affects visibility.
When: Intermittent; occurs at any speed during night driving, regardless of whether vehicle is moving or stopped
Symptoms owners cite: Headlights cut off when turn signal activated; Lights remain off 2-5 seconds until turn signal deactivated or stalk jiggled; Occurs almost every time headlights are on while using turn signals; Flashing effect seen by oncoming drivers
Repairs/costs cited: One owner reports dealer repair attempted but failure recurred; owner unaware of what was replaced. Another owner reports issue persists after attempted repairs.
Electrical noise and headlight flickering on position changes
When switching headlights from auto to on position, lights flash and occasionally blackout for 2-5 seconds. An electrical popping noise (described as short circuit sound) occurs during position changes. Turn signals also trigger this noise.
When: Can occur while moving or standing still, on any roadway
Symptoms owners cite: Headlights flash when switching from auto to on position; Electrical pop/short circuit noise when switching modes; Blackout periods of 2-5 seconds until stalk is jiggled; Turn signals trigger short circuit noise
Brake lights failure to illuminate
Brake lights fail to illuminate at approximately 102,000 miles. Vehicle was serviced per unknown recall campaigns in 2014 and 2016, but failure persisted. Vehicle was not included in NHTSA campaign 13V113000.
When: Approximately 102,000 miles
Symptoms owners cite: Brake lights fail to illuminate
Repairs/costs cited: Dealer had not diagnosed vehicle; vehicle not repaired despite prior recall service
Recalls/TSBs owners mention: Vehicle serviced per unknown recall campaigns 2014 and 2016; not included in NHTSA campaign 13V113000
Headlight beam pattern inadequate for night driving
Low beam headlights project like spotlights with a sharp horizontal dark line across the visual field rather than providing flood illumination. The dark horizon line moves up and down with road bumps, obscuring the road ahead when descending hills. Dealer confirmed lights are within spec but refused adjustment.
When: Apparent from delivery; manifests particularly when driving hills
Symptoms owners cite: Low beam light directed downward only; Horizontal dark line divides light and dark areas; Dark area completely covers road ahead when descending hills; Cannot see road climbing in front of vehicle; Dark line moves with bumps in road
Repairs/costs cited: Dealer refused to adjust lights, stating they are within specification
Headlight adjustment markings reversed
Up and down arrow markings embossed into plastic headlight housing are backwards on both headlights. This design defect caused owner multiple adjustment attempts and internally misaligned the projector assembly.
When: Present from factory
Symptoms owners cite: Up and down arrows on housing are reversed; Causes confusion during adjustment attempts; Led to internal projector assembly misalignment
Repairs/costs cited: Projector assembly internally put out of alignment due to reversed markings
Synthesized from 10 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
Headlights flash when switching from "auto" to "on" position. Occasionally the headlights in the "on" positon will blackout for 2-5 seconds until headlight stalk is giggled. There is an electrical "noise" (like a short circuit sound...a "pop") when switching from auto to on. The turn signals also seem to trigger the "short circuit". All of these conditions can occur moving or standing…
Had lighting trouble with your 2010 Hyundai Genesis Coupe?
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 lighting problem on the 2010 Hyundai Genesis Coupe?
It's a documented issue but not catastrophic. 10 complaints have been filed. Repairs average $250 and most owners catch it before it causes a breakdown.
At what mileage does the lighting typically fail?
Across the 9 complaints that reported odometer mileage, most lighting failures cluster between 46,000 and 100,000 miles, with the median around 59,000. A quarter of owners report trouble before 46,000; a quarter make it past 100,000. 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 $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.
Are there any recalls related to lighting?
No active recalls currently cover lighting 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/2010/Hyundai/Genesis Coupe.
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.