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2011 Hyundai SONATA HYBRID Power Train Problems, Complaints and Defects

Issue ID	1395779
Internal NHTSA #	11011511
Manufacurer	Hyundai Motor America
Brand	HYUNDAI
Model	SONATA HYBRID
Model Year	2011
File date	28/07/17
Component	POWER TRAIN
Product type code	VEHICLE
Description of the problem	I am experiencing a second issue with the transmission in my 2011 hybrid sonata. The transmission died once at around 80,000 miles and was rebuilt by hyundai approximately 2 years ago. At the time it originally failed, my transmission experienced the same symptoms that many other owners complained about before it finally experienced a total failure and was dead on the road. Recently (now at 120k miles) my car has started showing the same symptoms that preceded the original failure. This time, however, my vehicle is out of warranty so i willl have to decide whether to invest in another replacement that will also eventually fail or to just scrap the car and cut my losses. Before total failure the reported symptoms do not generate any codes that the dealer can use to diagnose the problem. This was my and apparently many other owners' have experienced the same, before total failure. I had my car in the dealer for several visits during which they simply kept blaming outdated programming that they then updated, but could never recreate any of the symptoms i had complained and even recorded on video and showed them. They said hyundai could not approve any service to the transmission unless they had "codes" indicating a problem was present. These failures, especially in the hybrid models for at least the 2011 and 2012 model years seem more than random. I believe there is a manufacturer defect in these hybrid transmissions and that hyundai probably is well aware that there is a systemic problem. I'm sure they have data that shows this is a real problem, and not something related to driving patterns, conditions, maintenance, geography, climate, etc. Please ask hyundai for their cooperation by releasing data related to transmission failures on these model and years and ask them to look into an engineering issue and possibly issue a recall and/or additional warranty coverage.
Vehicle Mileage at Failure	121000
Number of Occurences
Source of the issue	NHTSA WEB SITE
City and State	POTOMAC FALLS, VA
VIN pattern	KMHEC4A40BAXXXXXX
Was vehicle invloved in a crash?	N
Was vehicle involved in a fire?	N
Was incedent reported to police?	N
Was medical attention required?	N
Was part original equipment?
No. of injured persons
No. of fatalities
Date of purchase	07/08/26
Was original owner?	N
Anti-lock brakes	N
Cruise control	N
Number of cylinders
Drive train type
Transmission type
Vehicle speed	10
DoT tire identifier
Tire size
Location of tire code
Type of tire failure code
Was defective tire repaired?
Date of manufacture
Type of child seat code
Type of restraint
Dealer's name
Dealer's telephone number
Dealer's city
Dealer's state code
Dealer's ZIP code

What is Recall?
A recall is when a product is removed from the market or a correction is made to the product because it is either defective or potentially harmful.
What is Failure?
Failure is the state or condition of not meeting a desirable or intended objective, and may be viewed as the opposite of success. Product failure ranges from failure to sell the product to fracture of the product, in the worst cases leading to personal injury, the province of forensic engineering.
What is Defect?
Non-conformance of a car component with the specified requirements, or non-fulfillment of user expectations, including the safety aspects.

Last decoded VIN:

5UX23EM06S9Z73274 2C3CDZBT0LH118308 WBAEV11000KK50657 2C4RDGBG6ER136676 1C4NJDCB3CD501792 TMBAG6NE6K0246643 WVWZZZ1KZ5W544640 ZFF80AMT4H0225127 WDD2130041A557406 MZBEP8146RN357898 JT8BF28G2Y5096943 VF3CUHNZTHY151978

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2011 Hyundai SONATA HYBRID Power Train Problems, Complaints and Defects, Recalls and Failures

2011 Hyundai SONATA HYBRID Power Train Problems, Complaints and Defects

What is Recall?

What is Failure?

What is Defect?