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 ↗2009 Hyundai Genesis lighting problems
moderate 18 complaints filed with NHTSA · avg repair $250 · see lighting across all vehicles →
Failure mileage
Complaints
18
Recalls
0
Avg fix
$250
When does it fail?
Of the 18 lighting complaints filed for the 2009 Hyundai Genesis, 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
Among the 5 model years of Hyundai Genesis in our records for lighting problems, this one ranks #2 by owner-complaint volume.
No new NHTSA lighting complaint has been filed on this vehicle in over 11 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: STOP LAMP Z01 DIODE INSPECTION PROCEDURE. SOME VEHICLES MAY EXPERIENCE THE STOP LAMPS BLINKING ON AND OFF EVEN WHEN THE BRAKES ARE NOT APPLIED. IF THE Z01 DIODE IS SUSPECTED AS THE CAUSE OF THE STOP LAMP MALFUNCTION, THE Z01 DIODE MUST BE INSPECTED ACCORDING TO PROCEDURES. IF THERE IS NO TROUBLE WITH THE Z01 DIODE AFTER INSPECTION, CARRY OUT OTHER NECESSARY REPAIRS AND DO NOT REPLACE THE Z01 DIODE. NO MODEL YEARS LISTED.
full bulletin at NHTSA ↗HYUNDAI: ADAPTIVE FRONT LIGHTING SYSTEM (AFLS) ECU REPLACEMENT PART. PROVIDES INFORMATION ABOUT ECU REPLACEMENT PART AVAILABILITY FOR THE VEHICLE ADAPTIVE FRONT LIGHTING SYSTEM (AFLS) ECU CHANGE. NO MODEL YEARS LISTED.
full bulletin at NHTSA ↗HYUNDAI: STOP LAMP Z01 DIODE INSPECTION PROCEDURE. SOME VEHICLES MAY EXPERIENCE THE STOP LAMPS BLINKING ON AND OFF EVEN WHEN THE BRAKES ARE NOT APPLIED. NO MODEL YEARS LISTED.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Brake light failures dominate these complaints. All three brake lights routinely quit working with the brake pedal depressed, and owners learn about it from other motorists or police instead of a warning light. The core issue is the stop lamp switch diode assembly (part #13-01-021-3), which fails intermittently—and critically, it fails again after dealership replacement. One owner reports three failures across three years. Another says the diode failed seven months after recall service was performed in December 2013, despite owning the car since new. A self-described electrical engineer notes the designer likely underestimated inrush current from a cold bulb filament when selecting the component.
Hyundai issued recalls (campaigns #13V113000 and #14V713000 for exterior lighting), yet the failures recur. Dealers have replaced the diode multiple times on the same vehicles. One service manager blamed the owner for "riding the brake," and another dealer refused to perform the recall a third time, claiming it had already been done twice. The lack of a dashboard warning leaves drivers oblivious to the hazard—owners report nearly being rear-ended while unaware their brake lights were dark.
One early complaint also mentions headlight voltage regulator assemblies radiating RF noise that interferes with the TPMS left front tire sensor signal.
Same Hyundai Genesis lighting reports on nearby years: 2012
Failure modes owners describe
Brake lights inoperative
Complete failure of all brake lights (center, left, right) to illuminate when brake pedal is depressed. No dashboard warning light alerts the driver to the failure. Owners report being notified by other motorists or receiving fix-it tickets from police, unaware of the problem while driving. Some cases involve flickering brake lights instead of complete failure.
When: Failures reported across vehicle lifespans from as early as 8,110 miles to 165,000 miles; recurring pattern noted across multiple years (2011–2014)
Symptoms owners cite: Brake lights do not illuminate when brake pedal pressed; No warning light on dashboard; Brake lights flicker when brake applied; All three brake lights fail simultaneously; Problem recurs after dealership repair
Repairs/costs cited: Stop lamp switch replaced (part #13-01-021-3); diode in switch assembly replaced multiple times; diode wiring system replaced; same failures recur within weeks to months after repair
Recalls/TSBs owners mention: NHTSA recall campaign #14V713000 (Exterior Lighting); NHTSA campaign #13V113000 (Service Brakes); some owners report dealers stating recall was being worked on or already performed, yet failures continue
Headlight voltage regulator interference with TPMS
Headlight voltage regulator assemblies create radio frequency interference that cancels or confuses the signal from the left front tire pressure sensor, causing TPMS system malfunction. One owner reported persistent TPMS warning messages and noted headlights inoperable unless switch set to auto mode.
When: Early in vehicle ownership (reported around 2,000 miles in one case); also noted at higher mileage (138,526 miles in another)
Symptoms owners cite: TPMS warning message displayed on dashboard; Headlights inoperable unless switch set to auto mode; Radio frequency interference from voltage regulator
Repairs/costs cited: Not specified; one case indicated issue involved headlight voltage regulator assembly
Synthesized from 18 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
In july ,2014 , I was told by another driver that the stop lights were not functioning; I immediately took the vehicle to my local mechanic after my Hyundai dealer told me that it was not covered under my warranty. It was corrected the next day after my car was left until fixed. I was just notified by NHTSA that a recall ( campaign # 14v713) was just issued for faulty stoplight problem. I…
Had lighting trouble with your 2009 Hyundai Genesis?
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 2009 Hyundai Genesis?
It's a documented issue but not catastrophic. 18 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 15 complaints that reported odometer mileage, most lighting failures cluster between 15,400 and 79,000 miles, with the median around 43,650. A quarter of owners report trouble before 15,400; a quarter make it past 79,000. 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/2009/Hyundai/Genesis.
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.