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2009 Hyundai Sonata

Owner reports · Recalls · Investigations

More warning signs than most Sonata years

Owner complaints for the 2009 Hyundai Sonata are substantially higher than the model-year median of 161.

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When problems were reported

Mileage at the reported incident

375 reports with mileage · 85 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 64 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 61 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 56 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

21 crash reports11 fire reports20 injury reports

Electronic Stability Control (esc) complaints

51 reports
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152,000 miles · Oct 16, 2020
Electrical SystemElectronic Stability Control (esc)Engine

WAS DRIVING ON ACCESS ROAD AND THE ESC OFF LIGHT CAME ON AND THE CAR STARTED TO STALL- UNABLE TO ACCELERATE. HAD TO PULL TO SIDE OF THE ROAD ON WURZBACH PARKWAY. TOOK IT TO SHOP AND HAD CAM SHAFT, CRANKSHAFT SENSORS REMOVED AND REPLACED. HAD $700 OF OTHER WORK DONE AND CAR WORKED GREAT FOR 2 WEEKS. UNFORTUNATELY TODAY WHILE DRI…

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WAS DRIVING ON ACCESS ROAD AND THE ESC OFF LIGHT CAME ON AND THE CAR STARTED TO STALL- UNABLE TO ACCELERATE. HAD TO PULL TO SIDE OF THE ROAD ON WURZBACH PARKWAY. TOOK IT TO SHOP AND HAD CAM SHAFT, CRANKSHAFT SENSORS REMOVED AND REPLACED. HAD $700 OF OTHER WORK DONE AND CAR WORKED GREAT FOR 2 WEEKS. UNFORTUNATELY TODAY WHILE DRIVING HOME FROM ESC OFF LIGHT CAME ON AND CAR WAS UNABLE TO ACCELERATE. LUCKILY I GOT TO SAFETY BUT COULD'VE BEEN KILLED IF I WASN'T SO LUCKY... PRETTY RIDICULOUS PROBLEM TO HAVE ESPECIALLY AS SO MANY PEOPLE ARE REPORTING THE SAME PROBLEM...

NHTSA ODI #11364712

54,000 miles · Aug 2, 2019
Electronic Stability Control (esc)EnginePower Train

TAKATA RECALL ON JULY 27, 28 2019 THE ESC LIGHT CAME ON INTERMITTENTLY CAUSING THE CAR TO STALL DRIVING SOUTH ON I 75 AND LATER ON THE STREETS. AFTER TURNING THE CAR OFF AND RESTARTING THE CAR IT DROVE ALONG OK. DURING OUR RETURN TRIP, THE CAR STALLED AGAIN DRIVING NORTH ON I 75 , AND WE PULLED TO THE SIDE OF THE RO…

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TAKATA RECALL ON JULY 27, 28 2019 THE ESC LIGHT CAME ON INTERMITTENTLY CAUSING THE CAR TO STALL DRIVING SOUTH ON I 75 AND LATER ON THE STREETS. AFTER TURNING THE CAR OFF AND RESTARTING THE CAR IT DROVE ALONG OK. DURING OUR RETURN TRIP, THE CAR STALLED AGAIN DRIVING NORTH ON I 75 , AND WE PULLED TO THE SIDE OF THE ROAD ONLY SECONDS BEFORE A 18 WHEELER PASSED US WITHIN LESS THAN A FOOT BETWEEN US. ALL FIVE US COULD HAVE BEEN KILLED. WE WERE LUCKY TO FIND A NATIONAL REPAIR SHOP OPENED ON A SUNDAY WHO DIAGNOSED THE PROBLEM AS A FAULTY CRANKSHAFT POSITION SENSOR( THE CAR HAS 54,000 MILES ) . THE PART WAS REPLACED AND AFTER 4 HOURS WE WERE ON OUR WAY, MINUS $400 PLUS DOLLARS. RESEARCH INDICATES THAT THIS CONTINUES TO BE AN UNSAFE AND POTENTIALLY DEADLY PROBLEM -THAT THIS SENSOR MUST BE RECALLED- AND THE PUBLIC MADE AWARE OF THE DANGER.

NHTSA ODI #11241318

113,000 miles · Jul 11, 2019
Electrical SystemElectronic Stability Control (esc)Engine

TL* THE CONTACT OWNS A 2009 HYUNDAI SONATA. THE CONTACT STATED THAT THE ELECTRONIC STABILITY CONTROL INDICATOR ILLUMINATED WHILE DRIVING 60 MPH. ALSO, THE VEHICLE JERKED AND STALLED, BUT WAS ABLE TO RESTART. ADDITIONALLY, THE ACCELERATOR PEDAL FAILED TO RESPOND WHEN IT WAS DEPRESSED. THE VEHICLE WAS TAKEN TO SEVERAL INDEPENDENT…

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TL* THE CONTACT OWNS A 2009 HYUNDAI SONATA. THE CONTACT STATED THAT THE ELECTRONIC STABILITY CONTROL INDICATOR ILLUMINATED WHILE DRIVING 60 MPH. ALSO, THE VEHICLE JERKED AND STALLED, BUT WAS ABLE TO RESTART. ADDITIONALLY, THE ACCELERATOR PEDAL FAILED TO RESPOND WHEN IT WAS DEPRESSED. THE VEHICLE WAS TAKEN TO SEVERAL INDEPENDENT MECHANICS WHO REFERRED THE CONTACT TO HERITAGE HYUNDAI TOWSON (801 YORK RD, TOWSON, MD, 877-387-5495) WHERE IT WAS DIAGNOSED THAT THE CRANK POSITION SENSOR NEEDED TO BE REPLACED; HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 113,000.

NHTSA ODI #11231017

90,000 miles · Dec 12, 2018
Electronic Stability Control (esc)Steering

WHILE DRIVING AT VARIOUS SPEEDS THE "ESC OFF" LIGHT ILLUMINATES FOR NO REASON. THIS HAS HAPPENED WHILE DRIVING ON THE FREEWAY, NORMAL SURFACE STREETS, AND HAS OCCURRED WHILE BRAKING. POWER STEERING GOES OUT RANDOMLY DURING TURNS WHILE ON CITY STREETS OR HIGHWAYS. TOOK THE VEHICLE TO A MECHANIC WHO TESTED THE POWER STEERIN…

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WHILE DRIVING AT VARIOUS SPEEDS THE "ESC OFF" LIGHT ILLUMINATES FOR NO REASON. THIS HAS HAPPENED WHILE DRIVING ON THE FREEWAY, NORMAL SURFACE STREETS, AND HAS OCCURRED WHILE BRAKING. POWER STEERING GOES OUT RANDOMLY DURING TURNS WHILE ON CITY STREETS OR HIGHWAYS. TOOK THE VEHICLE TO A MECHANIC WHO TESTED THE POWER STEERING AND FOUND NO ISSUE WITH THE POWER STEERING PUMP. THE PUMP IS IN GOOD WORKING ORDER AND DID NOT NEED TO BE REPLACED. I HAD SEEN OTHER COMPLAINTS ON THE STEERING, WITH A RECALL ISSUED, ON 2008 AND 2011 SONATA MODELS, HOWEVER THE 2009 MODEL WAS NOT INCLUDED. THIS IS VERY DANGEROUS AND COULD CAUSE A CRASH. ON THOSE RECALLS THE COMPUTER CIRCUIT BOARD IN THE POWER STEERING CONTROL UNIT HAD BECOME DAMAGED AND MADE THE VEHICLE MORE DIFFICULT TO TURN POSSIBLY CAUSING A WRECK. STEERING ISSUE HAS BEEN ONGOING OVER THE YEARS.

NHTSA ODI #11160973

207,741 miles · Jul 29, 2018
Electronic Stability Control (esc)

WHILE DRIVING, THE ESC OFF LIGHT COMES ON. IT DOES SO RANDOMLY, BUT FREQUENTLY WHILE HIGHWAY DRIVING.

NHTSA ODI #11114412

140,000 miles · Jul 26, 2018
Electronic Stability Control (esc)Service Brakes

MY BRAKE LIGHT STOP SWITCH BROKE INTO PIECES WITH NORMAL USE SO THE BRAKE LIGHTS STAY ON WHEN CAR IS TURNED OFF. MY FRONT BRAKE HOSE SPRUNG A FLUID LEAK THAT MADE THE BRAKES FULLY STOP WORKING IN THE MIDDLE OF A DRIVE. THE FRONT BRAKE HOSE SPLIT AND CRACKED PREMATURELY CUASING THE BRALE FLUID TO EMPTY OUT. THE BRAKE PEDAL WENT…

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MY BRAKE LIGHT STOP SWITCH BROKE INTO PIECES WITH NORMAL USE SO THE BRAKE LIGHTS STAY ON WHEN CAR IS TURNED OFF. MY FRONT BRAKE HOSE SPRUNG A FLUID LEAK THAT MADE THE BRAKES FULLY STOP WORKING IN THE MIDDLE OF A DRIVE. THE FRONT BRAKE HOSE SPLIT AND CRACKED PREMATURELY CUASING THE BRALE FLUID TO EMPTY OUT. THE BRAKE PEDAL WENT STRAIGHT TO THE FLOOR WITHOUT STOPPING THE VEHICLE WHEN THIS EVENT HAPPENED DURING A DRIVE. MY ESC LIGHT IS ON BIG PROBBLEM IM ASSUMING. MY PASSENGER AIR BAG LIGHT IS ON AS WELL BOTH INDICATE ARE OFF AND NON WORKING.

NHTSA ODI #11113718

61,000 miles · Jul 13, 2018
Electrical SystemElectronic Stability Control (esc)Vehicle Speed Control

WHILE DRIVING THE ESC AND CHECK ENGINE LIGHT COMES THEN IT WILL ONLY LET ME 'COAST' ABOUT 5MPH.

NHTSA ODI #11111155

130,000 miles · Jun 21, 2018
Electronic Stability Control (esc)Engine

TL* THE CONTACT OWNS A 2009 HYUNDAI SONATA. WHILE DRIVING VARIOUS SPEEDS, THE "ESC OFF" WARNING INDICATOR ILLUMINATED AND THE VEHICLE STALLED. THE CONTACT STATED THAT THE ACCELERATOR PEDAL WOULD NOT ACCELERATE THE VEHICLE FORWARD WHEN DEPRESSED AND THAT THE VEHICLE LOST POWER. PACIFICO HYUNDAI IN PHILADELPHIA, PENNSYLVANIA WAS M…

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TL* THE CONTACT OWNS A 2009 HYUNDAI SONATA. WHILE DRIVING VARIOUS SPEEDS, THE "ESC OFF" WARNING INDICATOR ILLUMINATED AND THE VEHICLE STALLED. THE CONTACT STATED THAT THE ACCELERATOR PEDAL WOULD NOT ACCELERATE THE VEHICLE FORWARD WHEN DEPRESSED AND THAT THE VEHICLE LOST POWER. PACIFICO HYUNDAI IN PHILADELPHIA, PENNSYLVANIA WAS MADE AWARE OF THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 130,000.

NHTSA ODI #11103074

95,000 miles · Apr 4, 2018
Electronic Stability Control (esc)

WHILE DRIVING NORMALLY, STRAIGHT ON A LEVEL ROAD ESC OFF LIGHT CAME ON. OCCASIONALLY TURNS OFF BUT MOSTLY STAYS ON. CARS AROUND 95000 MILES AND THE SAME THING HAPPENED TO A 2006 HYUNDAI SONATA I HAD AROUND THE SAME MILEAGE. MECHANIC SAID IT WAS AN ELECTRICAL ISSUE AND NEED TO CALL IN AN ELECTRICIAN.

NHTSA ODI #11083288

99,000 miles · Dec 21, 2017
Electrical SystemElectronic Stability Control (esc)Engine

TAKATA RECALL. I WAS TOLD THAT THE ELECTRICAL MODULE IS DEFECTIVE BY AUTOZONE,. WE WERE DRIVING DOWN THE HIGHWAY WHEN ALL OF A SUDDEN THE ENGINE LIGHT CAME ON. WE PULLED OVER TO CHECK THE USUAL STUFF LIKE OIL AND ANTIFREEZE AND OTHER FLUIDS. BUT ALL OF THEM WERE OK. WE TRIED TO LEAVE AGAIN WITH NO SUCCESS. WE HAD NO POWER. THE E…

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TAKATA RECALL. I WAS TOLD THAT THE ELECTRICAL MODULE IS DEFECTIVE BY AUTOZONE,. WE WERE DRIVING DOWN THE HIGHWAY WHEN ALL OF A SUDDEN THE ENGINE LIGHT CAME ON. WE PULLED OVER TO CHECK THE USUAL STUFF LIKE OIL AND ANTIFREEZE AND OTHER FLUIDS. BUT ALL OF THEM WERE OK. WE TRIED TO LEAVE AGAIN WITH NO SUCCESS. WE HAD NO POWER. THE ENGINE WOULD TURN OVER BUT WHEN WE TRIED TO PRESS THE GAS NOTHING WOULD GO. SO WE STOPPED THE CAR WAITED FOR A WHILE AND THEN THE CAR STARTED. WE COUNTINUED OUR TRIP CAREFULLY, BUT THE CHECK ENGINE LIGHT WAS STILL ON. AFTER WE ARRIVED TO OUR DESTINATION I WENT TO AUTOZONE TO CHECK THE PROBLEM. THEY SAID THE ELETRICAL AND CPU MODULES ARE DAMAGED. THAT OF COURSE HAS ME A LITTLE WORRIED. WE HAVE ONLY HAD THE CAR FOR A YEAR SO IT COULDNT BE FOR THAT REASON.

NHTSA ODI #11055849

Official recalls

2

13V354000 · Suspension:rear

Aug 12, 2013

Hyundai is recalling certain model year 2006-2010 Sonata vehicles manufactured March 1, 2005, through January 21, 2010; and model year 2006-2011 Azera vehicles manufactured September 27, 2005, through November 22, 2010 originally sold in, or currently registered in, Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, Wisconsin and the District of Columbia. Road salt and water can enter portions of the rear crossmember, leading to corrosion of the crossmember steel. This may lead to detachment of one of the rear control arms.

Consequence & remedy

Consequence: Control arm separation may suddenly change the rear wheel alignment, affecting the handling of the vehicle, increasing the risk of a crash.

Remedy: Hyundai will notify owners, and dealers will repair or replace the crossmember assembly. The recall began on October 8, 2013. Owners may contact Hyundai Customer Care Center at 1-800-633-5151. Hyundai's recall number is 113.

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

3

DP22003 · Loss Of Motive Power

Opened Sep 12, 2022 · Closed Dec 12, 2023

Status: closed (inferred from source dates) · Engine

The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021. The Petitioners cited examples of complaints indicating that the subject vehicles were experiencing rapid loss of engine oil due to oil drain plug back outs, resulting in loss of motive power and/or catastrophic engine damage. Additional complaints were provided which alleged that the oil drain pans lack sufficient structural integrity and are susceptible to cracking. The petition itself can be reviewed at NHTSA.gov under ODI number 11481745. On September 12, 2022, the Office of Defects Investigation (ODI) opened Defect Petition (DP22-003) to evaluate the Petitioners’ request. The Petitioners have provided additional complaints within four supplemental letters dated January 31, 2023, March 21, 2023, May 23, 2023, and August 4, 2023. ODI’s evaluation included the review and analysis of the complaints and supporting information submitted by the Petitioners, as well as additional complaints submitted directly to NHTSA which referenced either the oil drain plug or a crack in the oil pan. After reviewing the available data, ODI has not identified evidence that would support opening a defect investigation into the oil drain pan assemblies of the subject vehicles. Based on a review of the available information, a loss of motive power resulting from an oil drain plug back out has not occurred between the initial sale of a vehicle and the completion of its first oil change. If during an oil change service, a technician fails to remove the existing drain plug gasket before installing a new gasket, it is likely that a proper seal between the drain plug and the oil pan will not be made. An improper seal between the drain plug and oil pan could lead to the backing out on the drain plug, resulting in the sudden loss of oil while driving. Additionally, the provided examples of oil pan cracks were localized to the immediate vicinity of the oil drain plug and/or appeared to be the result of direct-contact with a tool during servicing.  There is no information to support that a vehicle-based defect exists relating to the oil pan assembly, and instead the documented incidents are related to the failure to follow the proper maintenance procedures during oil change service. In October 2023, Hyundai published a Technical Service Bulletin (TSB) that provided detailed instructions for oil change service on its gasoline powered vehicles, specifically highlighting the need to remove and replace the existing drain plug gasket prior to reinstalling the drain plug. After a thorough review of the material submitted by the petitioner, the information already in NHTSA's possession, and the potential risks to motor vehicle safety implicated by the petitioners' allegations, NHTSA does not believe that a formal investigation is warranted. Therefore, the petition is denied. A Federal Register Notice (FRN) further detailing NHTSA’s reasons for denial of the petition will be published. The reference numbers for the complaints to NHTSA cited by the petitioner can be found in the petition submission documents in the public file for DP22-003. To review those complaints and the additional complaints ODI added to its evaluation which are cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.

DP21003 · Throttle Control System Vulnerabilities

Opened Nov 12, 2021 · Closed Jun 20, 2023

Status: closed (inferred from source dates) · Vehicle Speed Control:throttle

The Office of Defects Investigation (ODI) of the National Highway Traffic Safety Administration (NHTSA) received a petition letter dated October 10, 2021, requesting an investigation of possible defects in the electronic throttle control (ETC) system on certain Kia vehicles resulting in the opening of DP21-003. Accordingly, Model Year (MY) 2005-2016 Kia Optima/K5, MY 2006-2015 Kia Sorento, MY 2007-2016 Hyundai Elantra, MY 2007-2016 Hyundai Santa Fe, MY 2006-2015 Hyundai Sonatas are all part of the subject population. The petition was originally filed as a Vehicle Owner Questionnaire that can be reviewed at NHTSA.gov under reference (ODI) number 11439675.On November 12, 2021, ODI opened Defect Petition DP21-003 to evaluate the petitioner?s request. ODI performed trend analyses of the VOQs related to vehicle speed control issues for all the subject vehicles and found that none of the 52 Model/Model Year Hyundai/Kia vehicles demonstrated any actionable trend that warranted an investigation.Petitioners submitted 1119 VOQs and non-VOQ cases in which sudden uncommanded acceleration (SUA) or loss of motive power (LOMP) incidents were alleged.For the 1119 reports, 220 were incidents involving crashes, from which 69 subject Hyundai-Kia vehicles were inspected by Hyundai/Kia dealer technicians, Hyundai/Kia engineers, and/or third-party representatives.ODI found the inspections identified no vehicle defects related to the ETC system.Of the 220 crash-involved reports, 13 Event Data Recorder (EDR) records were downloaded successfully and 11 of those indicated driver error: (i.e.) pedal misapplication.A condition where the accelerator pedal is mistakenly applied instead of the brake pedal when the driver wants to stop the vehicle.In addition, ODI reviewed a scientific journal paper published in Forensic Science International in 2016 by Mr. Park et al ., as well as related test videos. ODI does not believe there is any evidence of uncontrollable SUA occurrences in any of the tests reviewed. NHTSA's Office of Vehicle Safety Compliance (OVSC) reviewed the allegations regarding the potential noncompliance with Federal Motor Vehicle Safety Standard No. 124.Based on the information provided, the Agency concludes there is insufficient information for us to determine if a possible non-compliance exists.Finally, both Hyundai and Kia informed ODI that all their vehicles manufactured after 2012 were equipped with an ETC management system, in which the engine speed will go to idle when the system sees signals from both the brake pedal and accelerator pedal at the same time; this is commonly known as the brake-throttle override system.After thoroughly assessing the material submitted by the petitioner, information already in NHTSA's possession, information submitted by Hyundai and Kia in response to an Information Request letter, and the potential risks to safety implicated by the petitioner's allegation, NHTSA does not believe that a formal investigation is warranted. After full consideration of appropriate factors, the petition is denied. A Federal Register Notice (FRN) further detailing NHTSA?s reasons for denial of the petition will be published.

PE13007 · Rear Control Arm Failure

Opened Mar 25, 2013 · Closed Aug 20, 2013

Status: closed (inferred from source dates) · Suspension:rear

In a letter dated August 9, 2013, Hyundai-Kia America Technical Center, Inc. (Hyundai) notified NHTSA that Hyundaiis conducting a safety recall (13V-354) involving approximately 239,000 vehicles involving model year (MY) 2006 through 2010 Hyundai Sonata vehicles (approximately 215,000)produced beginning on March 1, 2005 through January 21, 2010 and model year (MY) 2006 through 2011 Hyundai Azera vehicles (approximately 24,000) produced beginning on September 27, 2005 through November 22, 2010 that are registered in and operated or originally sold in the following 20 salt belt states and the District of Columbia: Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, and Wisconsin.Hyundai will also inform dealers to inspect/repair vehicles that were previously registered in salt belt states but are currently registered elsewhere. Hyundai is conducting the recall to remedy a defect involving internal corrosion of the rear sub frame that may lead to separation of the rear upper/lower control arm(s) at their respective mounting points and/or separation of the axle from the transaxle where they meet.This could result in a loss of vehicle control and/or vehicle disablement which may increase the risk of a vehicle crash.In response to NHTSA?s Information Request (IR) letter, Hyundai stated the Azera vehicles utilizes the identical cross member and upper/lower rear control arm components as the subject (Sonata) vehicles.In analysis of both Vehicle Owner Questionnaire (VOQ) data submitted to the Office of Defects Investigation (ODI) and consumer complaint data submitted to Hyundai, ODI identified 19 non-duplicative reports alleging excessive corrosion of the rear sub frame. All of the complaint vehicles were either originally sold or registered at the time of the incident in one of the salt belt states.Of these 19 reports, 9 alleged either a suspension component separation or a fracture of the vehicle's rear cross member assembly.Similarly, ODI identified 8 warranty claims of rear sub frame replacement in data submitted by Hyundai due to excessive corrosion, all of which involved vehicles originally sold or operated in a salt belt state. Based on Hyundai's decision to conduct a safety recall, (13V-354) this investigation is closed.The VOQs cited above can be viewed at www-odi.nhtsa.dot.gov/owners/SearchNHTSAID under the following identification numbers: 10535115, 10534110, 10525976, 10524726, 10521520, 10508368, 10505463, 10490073, 10486752, 10486435, 1048354, 10473922, and 10437887.