Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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definitely annoying
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
34,927 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2012 Hyundai Sonata Hybrid electrical problems

electrical problem

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2012 Hyundai Sonata Hybrid Owner Comments

problem #11

Jul 252016

Sonata Hybrid

  • 62,000 miles


The contact owns a 2012 Hyundai Sonata hybrid. While driving 45 mph, the vehicle lost power and came to a complete halt. In addition, the accelerator pedal was depressed but the vehicle failed to accelerate. "hybrid battery low, shift to park position" was displayed across the message board. The failure recurred on numerous occasions. The vehicle was towed to a dealer, but was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 62,000.

- Anaheim, CA, USA

problem #10

Nov 032015

Sonata Hybrid

  • 5,000 miles
After the 6th or 7th time the car is started, there is no radio sound. I have to turn the car off then back on 5 or 6 times to get the radio to engage. This happens regularly, starting a few months after I bought the car, which was brand new.

- Milford, OH, USA

problem #9

Jul 242015

Sonata Hybrid

  • 71,415 miles
The contact owns a 2012 Hyundai Sonata hybrid. When shifting into reverse or drive, the vehicle jerked violently. In addition, while driving 15-20 mph, a chime sounded and the 'safely stop and do not driveż warning message appeared on the message board. The failure recurred multiple times. The vehicle was taken to a dealer where it was diagnosed that the oil pump or the computer module failed. The vehicle was not repaired. The vehicle was not included in a manufacturers recall that was related to the failure. The approximate failure mileage was 71,415.

- Turnersville, NJ, USA

problem #8

Apr 012015

Sonata Hybrid

  • 22,500 miles


Check charging system light comes up, some times cant change from drive to reverse, other times change park to any other gear, have to turn the car off and on again. The car jumps when getting out of ev mode, hesitates when going out of ev mode, making it very dangerous at a intersection and U turns. I found so many complains about the Hyundai hybrid 2012, .....same problems, how come nobody does anything "?"

- West Palm Beach, FL, USA

problem #7

Jan 192015

Sonata Hybrid

  • 49,000 miles
The contact owns a 2012 Hyundai Sonata hybrid. The contact stated that while driving at approximately 45 mph, the hybrid safety warning do not drive warning light illuminated. The vehicle was towed to the dealer, who diagnosed that the bms module needed to replaced. The vehicle was repaired but the failure recurred. The manufacturer was made aware of the failure. The approximate failure mileage was 49,000.

- Chicago , IL, USA

problem #6

Nov 292014

Sonata Hybrid 4-cyl

  • 74,000 miles
This problem has been getting progressively worse during the last 6 months. While driving or stopped at a light, the vehicle has sudden unexplained acceleration. The acceleration happens with or without the foot on the gas. When in drive, the driver can remove his foot from the gas and the vehicle continues to accelerate and pick up speed. The condition is extremely hazardous and warrants further investigation.

- Tijeras, NM, USA

problem #5

Sep 032013

Sonata Hybrid

  • 77,259 miles


The car was at a stop light and burst into flames, all of the sonatas have this problem, all sonatas will at the least burn up the engines, transmissions, or batteries due to this problem. Out of 35 sonatas tested 35 had this problem. Contacted Hyundai usa, Hyundai fullerton, Hyundai consumer complaint line and they refuse to do anything about it. Every sonata hybird in the world, (to the best of my knowledge) will burn up the engine, transmission, or lithium batteries (which will catch fire) between 70,000 &120,000 miles, Hyundai will not warranty the failure, this is caused by a manufacture defect.. a part in the cooling system will disintegrate and crumble apart like a wet cookie, then you will have a 3/4" hose coming off the water pump pumping all the water out of the cooling system, with less then a gallon of coolant this will take 2 seconds, everything will overheat and you can throw that car away, a new engine is $7,000 a transmission, $6,000 lithium batteries $10,000 all prices do not include installation..

- Kahuku, HI, USA

problem #4

Nov 162012

Sonata Hybrid 4-cyl

  • 3,722 miles
Back up camera takes 10 to 15 seconds before coming on (average 12 seconds), audio on radio, cd player and iphone music goes out occasionally, gps has failed to operate on occasion.

- Monterey Park, CA, USA

problem #3

Jan 202013

Sonata Hybrid 4-cyl

  • 8,700 miles
Electrical smell like melting plastic wiring: First incident as noted above; 2nd incident on 1/29/2013, mileage 9227-on vehicle start up (engine warm as it was after earlier driving) same hot, melting wire type smell coming through climate control dash vents; 3rd incident on 4/12/2013-mileage 12,353-hot burning smell through heater vents occurring on/after climbing steep hill for a mile or so; 4th incident-4/16/2013, mileage 12538, location of incident same as 3rd incident, same hill climb, same smell occurring during drive. Reported to dealer. Could not be duplicated during service appt. No further incidents of burning smell to current date: 01/13/2014. Cruise control and transmission gear selection issues: First incident: Around 1/20/2013; subsequent incidents periodically since then to current date of 01/14/2013: When on cruise control, speeds set at anywhere (40-60 mpg for these incidents), on coasting down or flat terrain transmission will shift from 6th (high) gear down to 3rd or 4th and hold that gear with engine rev ving accordingly, until I either manu-shift it back up to 6th, or, perhaps after 10 or more seconds it might shift into higher gear on its own. I have deliberately not disengaged cruise control during these incidents to continue to assess the condition. Related to this is occasional excessive acceleration as car can drop (on cruise) to below set speed as in a dip in the road, and then applying speed to get back to set speed, but, it will accelerate aggressively to as much as 10 mph above set speed before cruise control mode 'back' off the acceleration action, making the car feel like it is 'taking off'. this can happen often on certain roads at same transition points from coasting downward into a dip in the road, then (cruise control) reapplying power to get the car backup to speed. Rest will be sent in a second submission following this.

- Sharon, CT, USA

problem #2

Jun 052013

Sonata Hybrid 4-cyl

  • 1,800 miles
Purchased new in Mar. 2013, not our first hybrid. Car began to have shudder/jerky/rough take off from morning start and first stop sign at end of street. This became more often and worsened. One morning left curb as usual, brakes locked up at stop sign and warning light on dash for brake problem. Was able to back car back into curb spot and had towed to dealership. Date given was about the towing date. Car was in shop around three weeks due to needing new brake module or something that was leaking internally inside brake unit from factory. Car also had issue to were the battery would not charge properly. Worked correctly when purchased but then would not charge past 50% and usually less than. Repairs made and lots of updates and sensor adjustments and we were given car back. Sadly it only lasted a few months and had to be towed again. Late Aug, early Sept, the car started to jerk at take off again. I tried just sitting at curb for awhile after starting car to let sensors warm up. This seemed to help for short time. Problem worsened again until wife complained. I drove full time and it had gotten worse to bad and all the time. Bad acceleration, like brakes not letting off. Last straw! Nov 1st 2013, car jerked and shuddered at take off, brakes locked up solid at stop sign, locked up again at second stop sign, entering traffic to get back home... car stopped dead in middle of left hand turn in middle of highway!! fully loaded log truck coming at me passenger side. Took 2-3 hard stomps on accelerator peddle to get car moving, gas engine finally revved high but car just crawled forward!!! thankfully the truck had started braking as soon as he saw car hesitate in street and car crawled forward enough that I did not get hit. But that grill filled the entire passenger window. Car towed to shop again on mon 4th am. Called on 5th, huge software update, but no guaranty !"!?"

- Hoquiam, WA, USA

problem #1

Dec 282011

Sonata Hybrid 4-cyl

  • 8,800 miles
Pulling into traffic the car quit, leaving me starring down the oncoming traffic. I was able to coast to the side and get it restarted. This happened twice during the same day. It will also only charge the batteries to 50%, and sometime the car won't operate on only battery power. This is a potential very serious item they need to address, or start returning money to the owners. I will not drive the car until this is fixed. It is a dangerous car, never knowing when it will quit. I have since discovered this is a common problem with the Sonata hybrid.

- Las Vegas, NV, USA

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