IllustrationDRIVING ABOUT 40 MPH, WHEN I HAD TO STOP SUDDENLY FOR THE RED LIGHT AT THE INTERSECTION, FOR SOME REASON BRAKES WAS REAL SOFT. IT WAS VERY CLEAR THAT I WASN'T ABLE TO STOP THE CAR AS EXPECTED, CHECKED ALL THE FLUIDS AND BRAKES FOR ANY LEAKS. EVERYTHING LOOKED NORMAL BUT BRAKE PEDAL STILL GO ALL THE WAY TO THE FLOOR. *TR
2009 Hyundai Genesis
Owner reports · Recalls · Investigations
More warning signs than most Genesis years
Owner complaints for the 2009 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
290–25K
4725–50K
6050–75K
3675–100K
27100–150K
8150K+
207 reports with mileage · 27 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.
- Service Brakes. Review the 110 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 28 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Exterior Lighting. Review the 24 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
15 crash reports2 fire reports3 injury reports
What owners actually said
234 reportsWHILE DRIVING WITH FAMILY ON DAY BEFORE FATHER-IN-LAWS FUNERAL MY BRAKE PEDAL WENT TO FLOOR. AFTER RESTARTING SEVERAL TIMES SAME THING EXPERIENCED. NO FAULT CODES SEEN READ MANY ONLINE FORUM POSTS WITH SAME PROBLEMS. BRAKING POWER REDUCED BY APPROX 70%. SCARY TO DRIVE CAR NOW. THIS SHOULD BE RECALLED. ALL POSTS POINT TO AB…
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WHILE DRIVING WITH FAMILY ON DAY BEFORE FATHER-IN-LAWS FUNERAL MY BRAKE PEDAL WENT TO FLOOR. AFTER RESTARTING SEVERAL TIMES SAME THING EXPERIENCED. NO FAULT CODES SEEN READ MANY ONLINE FORUM POSTS WITH SAME PROBLEMS. BRAKING POWER REDUCED BY APPROX 70%. SCARY TO DRIVE CAR NOW. THIS SHOULD BE RECALLED. ALL POSTS POINT TO ABS UNIT FAILURE. DEALER CALLED FOR AND DID TSB CHANGE TO HIGH TEMP BRAKE FLUID AT LAST SERVICE. RELATED TO ATTEMPT AND PREVENT THIS?? COULD VERY WELL BE. PLEASE HELP. *TR
THIS IS THE SECOND TIME BRAKE LIGHTS FAILED. NO INDICATION TO DRIVER. ALMOST CAUSED AN ACCIDENT. SAME DIODE PACKAGE REPLACED AS THE FIRST FAILURE REPORTED LESS THAN A YEAR AGO AND 5 K MILES. UPDATED 10/22/13 *CN THE CONSUMER STATEDALL BRAKE LIGHTS FAIL INCLUDING THE RIGHT, LEFT AND CENTER. *JS
ALL BRAKE LIGHTS FAILED NO INDICATION TO OPERATOR
HAD TO APPLY BRAKES SUDDENLY, CAR STOPPED AS NORMAL/EXPECTED. AFTER THIS INSTANCE, THE BRAKE PEDAL HAS BEEN EXCEPTIONALLY SOFT, OFTEN TRAVELING ALL THE WAY TO THE FLOOR PRIOR TO ANY STOPPING POWER. THE FLUID LEVEL IS NORMAL, BRAKE PADS ARE GOOD. *JB
WAS TRAVELING ON A ROAD AT THE POSTED 45 MPH WHEN I CAME TO S STOP SIGN. WHEN I TRIED TO SLOW DOWN PRIOR TO REACHING THE SIGN, THE CAR DID NOT SLOW DOWN AT ALL AND THE BRAKES WERE SOFT AND WENT DOWN ALL THE WAY TO THE FLOOR. NEEDLES TO SAY, I WAS NOT ABLE TO STOP AT THE STOP SIGN BUT BY VIRTUE OF PUMPING THE BRAKES I STOPPED ON …
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WAS TRAVELING ON A ROAD AT THE POSTED 45 MPH WHEN I CAME TO S STOP SIGN. WHEN I TRIED TO SLOW DOWN PRIOR TO REACHING THE SIGN, THE CAR DID NOT SLOW DOWN AT ALL AND THE BRAKES WERE SOFT AND WENT DOWN ALL THE WAY TO THE FLOOR. NEEDLES TO SAY, I WAS NOT ABLE TO STOP AT THE STOP SIGN BUT BY VIRTUE OF PUMPING THE BRAKES I STOPPED ON THE OTHER SIDE OF THE STREET. HAD THIS TRANSPIRED DURING A BUSY TIME, I WOULD HAVE T BONED A CAT THAT HAD A RIGHT OF WAY AND AT 45 MPH, I AM SURE THERE COULD HAVE BEEN LIVES LOST IF THE OTHER CAR HAD PASSENGERS. RESEARCH SHOWS THAT THIS IS A COMMON PROBLEM WITH HYUNDAI THAT IS BEING DISREGARDED. THE CAR HAS 62,900 MILES AND THE DEALER SIMPLY SAYS, SORRY, YOU ARE ONE MONTH AND 3000 MILES OVER THE WARRANTY. THE PROBLEM ACCORDING TO THE DEALER IS A FLUID LEAKING IN THE ABS CONTROL UNIT AND THEY WANT ABOUT $2500 TO REPLACE IT .CURIOUSLY, THE ESTIMATE INVOICE ALSO SHOWED THAT THEY HAD FLUSHED THE BRAKE LINES AND REPLACE IT WITH A NEW DOT 4 BRAKE FLUID AND, THIS WAS DONE UNDER A WARRANTY WHICH HAS EXPIRED. COULD THE ORIGINAL FLUID HAVE CREATED SOME OF THE PROBLEMS? EITHER WAY, THE BREAKS FAIL WITHOUT ANY WARNING WHATSOEVER AND I CERTAINLY HOPE THAT SOMEONE LOOKS INTO THIS BEFORE A DISASTROUS ACCIDENT WITH CASUALTIES TAKES PLACE. *JB
I WAS HEADING TO WORK AND WHEN I PRESSED THE BRAKE PEDAL IT HIT THE FLOOR AND THE CAR DIDN'T STOPPED SO I AM INTERMEDIATELY PRESSED THE PARK PEDAL AND MY CAR STARTED SPIN ON THE STREET. *JS
MY WIFE WAS COMING BACK HOME FROM DROPPING OFF THE KIDS AT SCHOOL, WHEN TRAFFIC WAS COMING TO A STOP IN FRONT OF HER. WHEN SHE TRIED TO APPLY THE BRAKES, THE BRAKE PEDAL WENT TO THE FLOOR WITH ALMOST NO RESISTANCE. FORTUNATELY, SHE WAS ABLE TO STOP BEFORE SHE HIT THE OTHER STOPPED CARS. THE DEALER HAS INFORMED ME THAT THE ABS…
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MY WIFE WAS COMING BACK HOME FROM DROPPING OFF THE KIDS AT SCHOOL, WHEN TRAFFIC WAS COMING TO A STOP IN FRONT OF HER. WHEN SHE TRIED TO APPLY THE BRAKES, THE BRAKE PEDAL WENT TO THE FLOOR WITH ALMOST NO RESISTANCE. FORTUNATELY, SHE WAS ABLE TO STOP BEFORE SHE HIT THE OTHER STOPPED CARS. THE DEALER HAS INFORMED ME THAT THE ABS MODULE HAS FAILED ON THE CAR. FROM LOOKING AT THIS SITE, I AM NOT THE FIRST DRIVER WITH THIS PROBLEM. SEEMS TO ME THAT HYUNDAI GOT A BAD BATCH OF ABS MODULES. I WOULD APPRECIATE IF NTHSB COULD CORRELATE THE VIN NUMBERS OF THOSE REPORTING THIS PROBLEM TO SEE IF THERE IS A PATTERN OF CLOSE VINS. HYUNDAI SHOULD MAKE THIS RIGHT AS THIS IS A MAJOR SAFETY ISSUE. THERE WAS NO WARNING OR INDICATION OF ANYTHING WRONG WITH THE BRAKES UNTIL THEY JUST SUDDENLY FAILED TO OPERATE. THE DEALER HAS CONFIRMED TO ME THAT THERE WAS ABSOLUTELY NO PREVENTATIVE MAINTENANCE OR SERVICE THAT I COULD HAVE OR SHOULD HAVE DONE TO PREVENT THIS FROM HAPPENING. LOOKING THROUGH THE ENTRIES OF SIMILAR PROBLEMS AT NHTSA AND READING THROUGH THE ENTRIES AT HTTP://WWW.GENESISOWNERS.COM, I AM SURPRISED THAT NO ONE HAS DIED FROM THIS ISSUE YET.
I WAS DRIVING AT ABOUT 35 MPH WHEN I HAD TO SLOW DOWN DUE TO VEHICLE SLOWING IN FROM OF ME. I PLACED MY FOOT ON THE BRAKE PEDAL. THE BRAKE PEDAL WENT TO THE FLOOR, SO I BEGAN PUMPING TO SEE IF THE BRAKES WOULD RESPOND. THE BRAKE PEDAL RESPONDED WITH AN INCREASE RESISTANCE AND I WAS ABLE TO SLOW DOWN. SHORTLY AFTER THE BRAKES R…
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I WAS DRIVING AT ABOUT 35 MPH WHEN I HAD TO SLOW DOWN DUE TO VEHICLE SLOWING IN FROM OF ME. I PLACED MY FOOT ON THE BRAKE PEDAL. THE BRAKE PEDAL WENT TO THE FLOOR, SO I BEGAN PUMPING TO SEE IF THE BRAKES WOULD RESPOND. THE BRAKE PEDAL RESPONDED WITH AN INCREASE RESISTANCE AND I WAS ABLE TO SLOW DOWN. SHORTLY AFTER THE BRAKES RESPONDED NORMALLY. A FEW DAYS LATER MY WIFE HAD A SIMILAR PROBLEM WITH THE BRAKE PEDAL WHEN PRESSURE WAS APPLIED. *TR
HAD TO BRAKE HARD TO AVOID DEBRIS ON HWY EXIT. FOLLOWING THAT THE BRAKE PEDAL BEGAN TO INTERMITTENTLY FADE NOTICEABLY. WITHIN 2 WEEKS IT BECAME A CHRONIC ISSUE. HAD THE BRAKE FLUID FLUSHED AND REPLACE. NO BETTER, HAD BRAKES REPLACED, NO BETTER, HAD THE MASTER CYLINDER AND BOOSTER REPLACED, AND AGAIN NO BETTER. I HAVE SPENT S…
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HAD TO BRAKE HARD TO AVOID DEBRIS ON HWY EXIT. FOLLOWING THAT THE BRAKE PEDAL BEGAN TO INTERMITTENTLY FADE NOTICEABLY. WITHIN 2 WEEKS IT BECAME A CHRONIC ISSUE. HAD THE BRAKE FLUID FLUSHED AND REPLACE. NO BETTER, HAD BRAKES REPLACED, NO BETTER, HAD THE MASTER CYLINDER AND BOOSTER REPLACED, AND AGAIN NO BETTER. I HAVE SPENT SEVERAL HUNDRED TO RESOLVE THIS PROBLEM. RECENTLY READ AN ON-LINE FORUM WHERE MANY GENESIS OWNERS ARE REPORTING SIMILAR PROBLEMS WITH SIMILAR PROBLEMS NARROWING IT DOWN. THE CONSENSUS APPEARS TO BE THAT THE ABS CONTROLLER IS FAULTY AND AT A COST OF ALMOST $3000 TO REPAIR. THIS IS TOTALLY UNSATISFACTORY! IT ISN'T JUST THE OUTRAGEOUS COST, BUT A SAFETY ITEM SHOULD NOT FAIL AS FREQUENTLY AS THEY APPEAR TO BE AND NOT ON A CAR THAT IS STILL RELATIVELY "NEW". *TR
Official recalls
314V713000 · Exterior Lighting:brake Lights:switch
Nov 7, 2014
Hyundai Motor America (Hyundai) is recalling certain 2009-2011 Hyundai Genesis vehicles manufactured April 30, 2008, to November 21, 2010, and 2011 Hyundai Equus vehicles manufactured July 31, 2010, to November 21, 2010. Due to a circuit failure, the stop lamps in the affected vehicles may not illuminate.
Consequence & remedy
Consequence: A following vehicle may not recognize that the vehicle is slowing or coming to a stop if the stop lamps on the vehicle do not illuminate as expected. There is an increased risk of a rear-end crash as a result.
Remedy: Hyundai will notify owners, and dealers will repair the stop lamp switch circuit, free of charge. Hyundai issued an interim notification to owners on January 6, 2015. The recall began on March 23, 2015. Owners may contact Hyundai customer service at 1-855-671-3059. Hyundai's number for this recall is 125.
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.
13V113000 · Exterior Lighting:brake Lights:switch
Apr 1, 2013
Hyundai Motor Company (Hyundai) is recalling certain model year 2006-2009 Accent, model year 2007-2011 Azera, Sonata and Sante Fe,2006-2011 Tucson, 2009-2011 Elantra Touring, 2007-2010 Elantra, 2008-2011 Veracruz, 2009-2011 Genesis, 2010-2011 Genesis Coupe, 2007-2008 Entourage, and 2006-2008 Tiburon vehicles. Originally, in April 2013, Hyundai recalled 1,059,824 model year 2007-2009 Accent and Tucson, model year 2007-2010 Elantra, model year 2007-2011 Santa Fe, model year 2008-2009 Veracruz, model year 2010-2011 Genesis Coupe, and model year 2011 Sonata vehicles. In September 2013, Hyundai informed the agency that it was adding more vehicles to this campaign, representing an additional 652,512 units. The total number of vehicles being recalled is now 1,712,336. In the affected vehicles, the stop lamp switch may malfunction. A malfunctioning stop lamp switch may cause the brake lights to not illuminate when the brake pedal is depressed or may cause an inability to deactivate the cruise control by depressing the brake pedal. Additionally, a malfunctioning stop lamp switch may also result in intermittent operation of the push-button start feature, affect the operation of the brake transmission shift interlock feature, preventing the shifter from being moved out of the PARK position and cause the Electronic Stability Control (ESC) malfunction light to illuminate.
Consequence & remedy
Consequence: Failure to illuminate the stop lamps during braking or inability to disengage the cruise control could increase the risk of a crash. Additionally, when the ignition is in the 'ON' position, the transmission shifter may be able to be moved out of Park without first applying the brake. This may lead to unintentional movement of the car which may increase the risk of a crash.
Remedy: Hyundai will notify owners, and dealers will replace the stop lamp switch, free of charge. The safety recall began on April 22, 2013. Owners may contact Hyundai at 1-800-633-5151. Hyundai's recall campaign number is 110.
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