IllustrationCOMPLETE LOSS OF ALL POWER SUPPLY AND TOTAL MECHANICAL SYSTEM/ENGINE NO LONGER OPERATIONAL
2012 Hyundai Genesis
Owner reports · Recalls · Investigations
More warning signs than most Genesis years
Owner complaints for the 2012 Hyundai Genesis are substantially higher than the model-year median of 109.
About this comparison →How this year compares
Owner complaints by model year
Compare all Genesis years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
340–25K
5925–50K
5350–75K
4375–100K
13100–150K
8150K+
210 reports with mileage · 49 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine. Review the 68 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 49 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 39 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
8 crash reports1 fire reports5 injury reports
What owners actually said
259 reportsCAR SHUT OFF FULL POWER OFF WHILE ON A RESIDENTIAL ROAD AND I WENT ACROSS THE ROAD UP A SLANTED SMALL HILL AND RAN OVER TREE AND YARD DEBRIS.
COMPLETE FAILURE OF ENGINE. SENSORS AND ELECTRICAL COMPONENTS MALFUNCTIONS. TOUCH SCREEN DISPLAY NON RESPONSIVE AND KEYSTROKES OFF. GAS/FUEL WOULD SPEW BACK OUT WHEN FILLING. WINDSHIELD VISIBILITY POOR. LIGHTING DIM. HYDRAULIC SYSTEM FAIL. TIMING BELT FAIL. FLANG SOUND (TICKING IN ENGINE) LED TO ENGINE FAIL. ELECTRICAL LIGHTS FL…
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COMPLETE FAILURE OF ENGINE. SENSORS AND ELECTRICAL COMPONENTS MALFUNCTIONS. TOUCH SCREEN DISPLAY NON RESPONSIVE AND KEYSTROKES OFF. GAS/FUEL WOULD SPEW BACK OUT WHEN FILLING. WINDSHIELD VISIBILITY POOR. LIGHTING DIM. HYDRAULIC SYSTEM FAIL. TIMING BELT FAIL. FLANG SOUND (TICKING IN ENGINE) LED TO ENGINE FAIL. ELECTRICAL LIGHTS FLICKERING WAS ME. VEHICLE STALLED OUT COMPLETELY SHUTTING OFF LOCKING UP AND SEIZING OUT. COMPONENTS MALFUNCTIONING. HARD BRAKE CHECKS, HIGH RPM RREVVING, AND IDLEING ALL ARE SHOWN WHEN CAR WAS TRAVELING AT 45 MPH AND NO CHANGE IN SPEED. FAILURE OF FLUIDS CAUSE CORROSION AND HECU. ENGINE LIGHT INDICATOR AND ENGINE OIL LAMP LIGHT FLICKERING WITH NO DISTINCT PATTERN. PROCEEDED TO BANG LOUD IN ENGINE. RPM REV 2-3K BEFORE SPEED CATCHES. CD PLAYER PROBLEMS. ALWAYS MAKING A SOUND AS IF IT IS TRYING TO EJECT AND THEN SPUTTERS OUT. IN 2 DAYS THE ENTIRE VEHICLE WENT FROM NO LIGHTS DISPLAYING NO KNOCKING SOUND. 94K MILES TOTAL
NAVIGATION DISPLAY FAILURE RESULTING IN NO BACK-UP CAMERA, NO A/V FUNCTIONS, AND HVAC CONTROL MALFUNCTION. DEALER REPLACED WITHIN APPROXIMATELY 8 MONTHS OF PURCHASE. SYSTEM HAS FAILED AGAIN AND CORPORATE ADVISED THAT THE PART WAS ON BACKORDER AND WE WAITED FOR A REPLACEMENT PART FOR 8 MONTHS. NOW CORPORATE HAS ADVISED THAT THE P…
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NAVIGATION DISPLAY FAILURE RESULTING IN NO BACK-UP CAMERA, NO A/V FUNCTIONS, AND HVAC CONTROL MALFUNCTION. DEALER REPLACED WITHIN APPROXIMATELY 8 MONTHS OF PURCHASE. SYSTEM HAS FAILED AGAIN AND CORPORATE ADVISED THAT THE PART WAS ON BACKORDER AND WE WAITED FOR A REPLACEMENT PART FOR 8 MONTHS. NOW CORPORATE HAS ADVISED THAT THE PART, A-V MONITOR ASSEMBLY PART #965633M851, IS UNAVAILABLE/DISCONTINUED. NO WAY TO REPAIR OR REPLACE THE PART. VEHICLE HAS 44,000 MILES ON IT. SUNROOF FAILED WITHIN FIRST 20,000 MILES AND WAS SEALED TO AVOID EXPENSIVE REPAIR. MOST RECENTLY THE CAR DIED WITHOUT WARNING WHILE STATIONARY. IN FOR EVALUATION NOW. THIS CAR HAS BEEN A CHRONIC PROBLEM SINCE WE FIRST PURCHASED IT AND CORPORATE HAS TOLD US THAT WE ARE AT A DEAD END REGARDING THE A/V MONITOR ASSEMBLY - THERE IS NOTHING THEY CAN DO. A/V MONITOR ASSEMBLY ISSUE OCCURRED IN JUNE OF 2020.
BRAKE FAILURE. BRAKE PEDAL MUST BE PUMPED TO COMPLETELY DEPRESS THE BRAKES AND STOP THE CAR. THIS ISSUE PERSISTS THROUGHOUT USE OF THE VEHICLE AND NO MATTER WHETHER AT HIGHWAY SPEEDS OR IN TOWN. THE ISSUE BEGAN SUDDENLY AND HAS BEEN CONSISTENT WITH THE VEHICLE SINCE THAT POINT. THE BRAKES NOT BEING FULLY FUNCTIONAL RENDER TH…
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BRAKE FAILURE. BRAKE PEDAL MUST BE PUMPED TO COMPLETELY DEPRESS THE BRAKES AND STOP THE CAR. THIS ISSUE PERSISTS THROUGHOUT USE OF THE VEHICLE AND NO MATTER WHETHER AT HIGHWAY SPEEDS OR IN TOWN. THE ISSUE BEGAN SUDDENLY AND HAS BEEN CONSISTENT WITH THE VEHICLE SINCE THAT POINT. THE BRAKES NOT BEING FULLY FUNCTIONAL RENDER THE CAR UNSAFE TO DRIVE UNDER ANY DRIVING CONDITIONS. CRUISE CONTROL LIGHT TURNS ON INTERMITTENTLY AND CRUISE CONTROL IS FEQUENTLY UNAVAILABLE ON THE CAR.
THE OUTLINE OF THE PASSENGER SIDE SEA AIRBAG SEEMS TO BE OPENING AS THOUGH THE AIRBAG WILL COME OUT AT ANY MOMENT. THERE ARE 2 PERFECT CUTS ON THE DASHBOARD WHERE THE AIRBAG IS AS THOUGHT THE AIRBAG IS TRIED TO DEPLOY BUT COULDN'T. I NOTICED ONE LINE ABOUT 2 MONTHS AGO AND THE OTHER LINE TODAY 8/15/20
ENGINE COMPLETELY STALLED 4 TIMES WHEN COMING TO A STOP AT A RED LIGHT. DASHBOARD LIT UP WITH ALL THE ICONS LIKE IT DOES WHEN YOU PRESS START ON THE CAR WITHOUT ACTUALLY TURNING IT ON. AC AND RADIO STAYED ON BUT BRAKE PEDAL AND STEERING WHEEL TIGHTENED UP AND LOSS OF FUNCTION IN TRAFFIC. HAD TO PUT GEAR IN PARK TURN OFF THE CAR …
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ENGINE COMPLETELY STALLED 4 TIMES WHEN COMING TO A STOP AT A RED LIGHT. DASHBOARD LIT UP WITH ALL THE ICONS LIKE IT DOES WHEN YOU PRESS START ON THE CAR WITHOUT ACTUALLY TURNING IT ON. AC AND RADIO STAYED ON BUT BRAKE PEDAL AND STEERING WHEEL TIGHTENED UP AND LOSS OF FUNCTION IN TRAFFIC. HAD TO PUT GEAR IN PARK TURN OFF THE CAR AND TURN IT BACK ON. ALL 4 TIMES IT CAME BACK ON WITHOUT ANY PROBLEMS AND TOOK ME HOME. COMMON ISSUE THAT OTHERS HAVE DESCRIBED AND CAN KILL SOMEONE!
TL* THE CONTACT OWNS A 2012 HYUNDAI GENESIS. THE CONTACT STATED THAT WHILE DRIVING AT A LOW RATE OF SPEED, THE VEHICLE STALLED AFTER THE ACCELERATOR PEDAL WAS RELEASED. THE CONTACT STATED THAT SEVERAL UNKNOWN WARNING LIGHTS WERE ILLUMINATED. THE VEHICLE WAS SHIFTED INTO NEUTRAL, RESTARTED, AND OPERATED AS INTENDED. THE VEHICLE W…
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TL* THE CONTACT OWNS A 2012 HYUNDAI GENESIS. THE CONTACT STATED THAT WHILE DRIVING AT A LOW RATE OF SPEED, THE VEHICLE STALLED AFTER THE ACCELERATOR PEDAL WAS RELEASED. THE CONTACT STATED THAT SEVERAL UNKNOWN WARNING LIGHTS WERE ILLUMINATED. THE VEHICLE WAS SHIFTED INTO NEUTRAL, RESTARTED, AND OPERATED AS INTENDED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC TO BE DIAGNOSED. THE MECHANIC WAS UNABLE TO DUPLICATE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. NEITHER THE DEALER NOR THE MANUFACTURER WERE NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 60,000.
BRAKE PEDAL GOES TO FLOORBOARD -- CAN PUMP AND GET PARTIAL BRAKE - AFRAID TO DRIVE AT HIGHER SPEEDS -- HAVE HAD THE MASTER CYLINDER REPLACED AND BRAKE SYSTEM BLED- DID NOT HELP THE PROBLEM
TL* THE CONTACT OWNS A 2012 HYUNDAI GENESIS. THE CONTACT STATED WHILE DRIVING AT 20 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS RESTARTED AND DRIVEN TO THE DESTINATION. THE CONTACT ALSO STATED THAT WHILE HER DAUGHTER WAS DRIVING AT THE SAME SPEED WEEKS LATER, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS TAK…
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TL* THE CONTACT OWNS A 2012 HYUNDAI GENESIS. THE CONTACT STATED WHILE DRIVING AT 20 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS RESTARTED AND DRIVEN TO THE DESTINATION. THE CONTACT ALSO STATED THAT WHILE HER DAUGHTER WAS DRIVING AT THE SAME SPEED WEEKS LATER, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO KEITH HAWTHORNE HYUNDAI OF GASTONIA (4712 WILKINSON BLVD, GASTONIA, NC 28056) HOWEVER, THE MECHANIC WAS UNABLE TO DUPLICATE THE FAILURE. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND REFERRED THE CONTACT TO THE DEALER. THE FAILURE MILEAGE WAS 138,000. THE VIN WAS NOT AVAILABLE.
Official recalls
216V117000 · Visibility:windshield Wiper/washer:motor
Feb 29, 2016
Hyundai Motor America (Hyundai) is recalling certain model year 2012 Genesis vehicles manufactured August 1, 2011, to April 30, 2012, and 2011-2013 Equus vehicles manufactured July 10, 2011, to June 12, 2012. The windshield wiper motor cover seal on the affected vehicles may degrade allowing corrosion on the wiper motor's circuit board. The corrosion can cause intermittent or total loss of wiper function.
Consequence & remedy
Consequence: Inoperative wipers during inclement weather can decrease driver visibility, increasing the risk of a crash.
Remedy: Hyundai will notify owners, and dealers will replace the wiper motor cover and seal, free of charge. The recall began on April 22, 2016. Owners may contact Hyundai customer service at 1-800-633-5151. Hyundai's number for this recall is 140.
13V489000 · Service Brakes, Hydraulic:fluid
Oct 29, 2013
Hyundai is recalling certain model year 2009-2012 Genesis vehicles manufactured April 30, 2008, through March 28, 2012. The vehicles may contain brake fluid which does not protect against corrosion of the Hydraulic Electronic Control Unit (HECU).
Consequence & remedy
Consequence: If the module corrodes, reduced brake effectiveness may result, increasing the risk of a crash.
Remedy: Hyundai will notify owners and instruct them to bring their vehicle to a dealer for service. Hyundai will inspect the HECU module for proper operation, and will replace the modules as necessary. Hyundai will replace the factory brake fluid in those vehicles that have not previously had the factory brake fluid replaced. These repairs will be done free of charge. The recall began on December 24, 2013. Owners may contact Hyundai at 1-800-633-5151 or by email at consumeraffairs@hmausa.com. Hyundai's recall number is 114.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1PE13033 · Brake Hydraulic Control Module Failure
Opened Oct 17, 2013 · Closed Apr 4, 2014
Status: closed (inferred from source dates) · Service Brakes, Hydraulic; Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip; Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module
On October 28, 2013, Hyundai Motor Company (Hyundai) submitted a Defect Information Report (DIR) to NHTSA describing a safety defect in the braking system of approximately 43,500 model year (MY) 2009 through 2012 Hyundai Genesis sedans (NHTSA Recall No. 13V-489).The Hyundai report indicates that the recalled vehicles may contain brake fluid that does not sufficiently inhibit corrosion on the zinc plating of control valve armatures in the Hydraulic Electronic Control Unit (HECU) module. The DIR indicated that, over time, the build-up of corrosion products may affect operation of HECU control valves, resulting in a low/soft brake pedal with reduced brake effectiveness, which may increase the risk of a crash.In October 2011, the HECU supplier notified Hyundai that the brake fluid used in production plants was causing corrosion of valve armatures in the control module.The supplier changed the coating of the valve armatures in late March 2012 to correct the problem in production vehicles.Hyundai's recall includes Genesis vehicles produced prior to the implementation of the HECU change.In March 2013, Hyundai initiated a Service Campaign (TL6) to replace brake fluid in the subject vehicles with brake fluid with better corrosion resistance properties.According to Hyundai's DIR letter, after PE13-033 was opened, the company noted that some of the vehicles serviced in the TL6 campaign subsequently required HECU replacement.This was an indication that internal corrosion had progressed enough to affect valve operation and brake performance, prompting Hyundai to conduct a safety recall.Hyundai's repair procedures for 13V-489 require brake system flushing and replacement in all recalled vehicles with a new fluid containing the necessary corrosion inhibitor.In addition, for vehicles produced prior to June 1, 2010, dealers will perform an inspection procedure to verify that the HECU is functioning properly and replace units that do not meet the test requirements.Hyundai indicated that, based on analysis of claim data, only vehicles produced prior to June 1, 2010 have been in service long enough to require the additional inspection/replacement of the HECU. Analysis of failure data reported to NHTSA and provided by Hyundai in response to ODI's information request letter for PE13-033 identified 756 complaints and 1,683 warranty claims for 30,114 subject vehicles produced prior to June 1, 2010, resulting in a complaint rate of 25.1 incidents per thousand vehicles (IPTV) and a claim rate of 5.6 percent.The MY 2009 vehicles, with the longest exposure times, experienced the highest complaint (33.5 IPTV) and warranty (7.0 percent) rates.For the 45,639 subject vehicles produced after June 1, 2010, ODI identified 13 complaints and 34 warranty claims, resulting in a complaint rate of 0.3 IPTV and a warranty claim rate of 0.1 percent, indicating that the brake fluid corrosion concern had not progressed far enough to result in significant rates of brake system performance symptoms in those vehicles.This investigation is closed.ODI will continue to monitor complaints to evaluate the effectiveness of Hyundai's recall.The VOQs noted in the Failure Report are: 10569231, 10560898, 10560495, 10559360, 10558279, 10558264, 10556964, 10556631, 10556577, 10556322, 10554988, 10554802, 10554122, 10552958, 10551817, 10551157, 10551110, 10551092, 10550791, 10550773, 10550431, 10549750, 10549634, 10549629, 10549567, 10549402, 10549376, 10549270, 10549228, 10549186, 10549021, 10548903, 10548823, 10548791, 10548737, 10548722, 10548716, 10548705, 10546565, 10544803, 10543663, 10542962, 10541959, 10541741, 10538208, 10537934, 10536652, 105354
Additional source detail variants (3)
Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module
On October 28, 2013, Hyundai Motor Company (Hyundai) submitted a Defect Information Report (DIR) to NHTSA describing a safety defect in the braking system of approximately 43,500 model year (MY) 2009 through 2012 Hyundai Genesis sedans (NHTSA Recall No. 13V-489).The Hyundai report indicates that the recalled vehicles may contain brake fluid that does not sufficiently inhibit corrosion on the zinc plating of control valve armatures in the Hydraulic Electronic Control Unit (HECU) module. The DIR indicated that, over time, the build-up of corrosion products may affect operation of HECU control valves, resulting in a low/soft brake pedal with reduced brake effectiveness, which may increase the risk of a crash.In October 2011, the HECU supplier notified Hyundai that the brake fluid used in production plants was causing corrosion of valve armatures in the control module.The supplier changed the coating of the valve armatures in late March 2012 to correct the problem in production vehicles.Hyundai's recall includes Genesis vehicles produced prior to the implementation of the HECU change.In March 2013, Hyundai initiated a Service Campaign (TL6) to replace brake fluid in the subject vehicles with brake fluid with better corrosion resistance properties.According to Hyundai's DIR letter, after PE13-033 was opened, the company noted that some of the vehicles serviced in the TL6 campaign subsequently required HECU replacement.This was an indication that internal corrosion had progressed enough to affect valve operation and brake performance, prompting Hyundai to conduct a safety recall.Hyundai's repair procedures for 13V-489 require brake system flushing and replacement in all recalled vehicles with a new fluid containing the necessary corrosion inhibitor.In addition, for vehicles produced prior to June 1, 2010, dealers will perform an inspection procedure to verify that the HECU is functioning properly and replace units that do not meet the test requirements.Hyundai indicated that, based on analysis of claim data, only vehicles produced prior to June 1, 2010 have been in service long enough to require the additional inspection/replacement of the HECU. Analysis of failure data reported to NHTSA and provided by Hyundai in response to ODI's information request letter for PE13-033 identified 756 complaints and 1,683 warranty claims for 30,114 subject vehicles produced prior to June 1, 2010, resulting in a complaint rate of 25.1 incidents per thousand vehicles (IPTV) and a claim rate of 5.6 percent.The MY 2009 vehicles, with the longest exposure times, experienced the highest complaint (33.5 IPTV) and warranty (7.0 percent) rates.For the 45,639 subject vehicles produced after June 1, 2010, ODI identified 13 complaints and 34 warranty claims, resulting in a complaint rate of 0.3 IPTV and a warranty claim rate of 0.1 percent, indicating that the brake fluid corrosion concern had not progressed far enough to result in significant rates of brake system performance symptoms in those vehicles.This investigation is closed.ODI will continue to monitor complaints to evaluate the effectiveness of Hyundai's recall.The VOQs noted in the Failure Report are: 10569231, 10560898, 10560495, 10559360, 10558279, 10558264, 10556964, 10556631, 10556577, 10556322, 10554988, 10554802, 10554122, 10552958, 10551817, 10551157, 10551110, 10551092, 10550791, 10550773, 10550431, 10549750, 10549634, 10549629, 10549567, 10549402, 10549376, 10549270, 10549228, 10549186, 10549021, 10548903, 10548823, 10548791, 10548737, 10548722, 10548716, 10548705, 10546565, 10544803, 10543663, 10542962, 10541959, 10541741, 10538208, 10537934, 10536652, 105354
Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip
On October 28, 2013, Hyundai Motor Company (Hyundai) submitted a Defect Information Report (DIR) to NHTSA describing a safety defect in the braking system of approximately 43,500 model year (MY) 2009 through 2012 Hyundai Genesis sedans (NHTSA Recall No. 13V-489).The Hyundai report indicates that the recalled vehicles may contain brake fluid that does not sufficiently inhibit corrosion on the zinc plating of control valve armatures in the Hydraulic Electronic Control Unit (HECU) module. The DIR indicated that, over time, the build-up of corrosion products may affect operation of HECU control valves, resulting in a low/soft brake pedal with reduced brake effectiveness, which may increase the risk of a crash.In October 2011, the HECU supplier notified Hyundai that the brake fluid used in production plants was causing corrosion of valve armatures in the control module.The supplier changed the coating of the valve armatures in late March 2012 to correct the problem in production vehicles.Hyundai's recall includes Genesis vehicles produced prior to the implementation of the HECU change.In March 2013, Hyundai initiated a Service Campaign (TL6) to replace brake fluid in the subject vehicles with brake fluid with better corrosion resistance properties.According to Hyundai's DIR letter, after PE13-033 was opened, the company noted that some of the vehicles serviced in the TL6 campaign subsequently required HECU replacement.This was an indication that internal corrosion had progressed enough to affect valve operation and brake performance, prompting Hyundai to conduct a safety recall.Hyundai's repair procedures for 13V-489 require brake system flushing and replacement in all recalled vehicles with a new fluid containing the necessary corrosion inhibitor.In addition, for vehicles produced prior to June 1, 2010, dealers will perform an inspection procedure to verify that the HECU is functioning properly and replace units that do not meet the test requirements.Hyundai indicated that, based on analysis of claim data, only vehicles produced prior to June 1, 2010 have been in service long enough to require the additional inspection/replacement of the HECU. Analysis of failure data reported to NHTSA and provided by Hyundai in response to ODI's information request letter for PE13-033 identified 756 complaints and 1,683 warranty claims for 30,114 subject vehicles produced prior to June 1, 2010, resulting in a complaint rate of 25.1 incidents per thousand vehicles (IPTV) and a claim rate of 5.6 percent.The MY 2009 vehicles, with the longest exposure times, experienced the highest complaint (33.5 IPTV) and warranty (7.0 percent) rates.For the 45,639 subject vehicles produced after June 1, 2010, ODI identified 13 complaints and 34 warranty claims, resulting in a complaint rate of 0.3 IPTV and a warranty claim rate of 0.1 percent, indicating that the brake fluid corrosion concern had not progressed far enough to result in significant rates of brake system performance symptoms in those vehicles.This investigation is closed.ODI will continue to monitor complaints to evaluate the effectiveness of Hyundai's recall.The VOQs noted in the Failure Report are: 10569231, 10560898, 10560495, 10559360, 10558279, 10558264, 10556964, 10556631, 10556577, 10556322, 10554988, 10554802, 10554122, 10552958, 10551817, 10551157, 10551110, 10551092, 10550791, 10550773, 10550431, 10549750, 10549634, 10549629, 10549567, 10549402, 10549376, 10549270, 10549228, 10549186, 10549021, 10548903, 10548823, 10548791, 10548737, 10548722, 10548716, 10548705, 10546565, 10544803, 10543663, 10542962, 10541959, 10541741, 10538208, 10537934, 10536652, 105354
Service Brakes, Hydraulic
On October 28, 2013, Hyundai Motor Company (Hyundai) submitted a Defect Information Report (DIR) to NHTSA describing a safety defect in the braking system of approximately 43,500 model year (MY) 2009 through 2012 Hyundai Genesis sedans (NHTSA Recall No. 13V-489).The Hyundai report indicates that the recalled vehicles may contain brake fluid that does not sufficiently inhibit corrosion on the zinc plating of control valve armatures in the Hydraulic Electronic Control Unit (HECU) module. The DIR indicated that, over time, the build-up of corrosion products may affect operation of HECU control valves, resulting in a low/soft brake pedal with reduced brake effectiveness, which may increase the risk of a crash.In October 2011, the HECU supplier notified Hyundai that the brake fluid used in production plants was causing corrosion of valve armatures in the control module.The supplier changed the coating of the valve armatures in late March 2012 to correct the problem in production vehicles.Hyundai's recall includes Genesis vehicles produced prior to the implementation of the HECU change.In March 2013, Hyundai initiated a Service Campaign (TL6) to replace brake fluid in the subject vehicles with brake fluid with better corrosion resistance properties.According to Hyundai's DIR letter, after PE13-033 was opened, the company noted that some of the vehicles serviced in the TL6 campaign subsequently required HECU replacement.This was an indication that internal corrosion had progressed enough to affect valve operation and brake performance, prompting Hyundai to conduct a safety recall.Hyundai's repair procedures for 13V-489 require brake system flushing and replacement in all recalled vehicles with a new fluid containing the necessary corrosion inhibitor.In addition, for vehicles produced prior to June 1, 2010, dealers will perform an inspection procedure to verify that the HECU is functioning properly and replace units that do not meet the test requirements.Hyundai indicated that, based on analysis of claim data, only vehicles produced prior to June 1, 2010 have been in service long enough to require the additional inspection/replacement of the HECU. Analysis of failure data reported to NHTSA and provided by Hyundai in response to ODI's information request letter for PE13-033 identified 756 complaints and 1,683 warranty claims for 30,114 subject vehicles produced prior to June 1, 2010, resulting in a complaint rate of 25.1 incidents per thousand vehicles (IPTV) and a claim rate of 5.6 percent.The MY 2009 vehicles, with the longest exposure times, experienced the highest complaint (33.5 IPTV) and warranty (7.0 percent) rates.For the 45,639 subject vehicles produced after June 1, 2010, ODI identified 13 complaints and 34 warranty claims, resulting in a complaint rate of 0.3 IPTV and a warranty claim rate of 0.1 percent, indicating that the brake fluid corrosion concern had not progressed far enough to result in significant rates of brake system performance symptoms in those vehicles.This investigation is closed.ODI will continue to monitor complaints to evaluate the effectiveness of Hyundai's recall.The VOQs noted in the Failure Report are: 10569231, 10560898, 10560495, 10559360, 10558279, 10558264, 10556964, 10556631, 10556577, 10556322, 10554988, 10554802, 10554122, 10552958, 10551817, 10551157, 10551110, 10551092, 10550791, 10550773, 10550431, 10549750, 10549634, 10549629, 10549567, 10549402, 10549376, 10549270, 10549228, 10549186, 10549021, 10548903, 10548823, 10548791, 10548737, 10548722, 10548716, 10548705, 10546565, 10544803, 10543663, 10542962, 10541959, 10541741, 10538208, 10537934, 10536652, 105354