CarComplaints.com Notes: The 2011 Sonata has a seriously defective engine that seizes without warning. It was awarded the dubious honor of being the first CarTalk / CarComplaints Turd of the Week in late September 2015.

A class action lawsuit was filed in May 2015 against Hyundai that claims the 2.4L Sonata engine is defective. More info here.

10.0

really awful
Crashes / Fires:
12 / 25
Injuries / Deaths:
9 / 0
Average Mileage:
50,296 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.

2011 Hyundai Sonata electrical problems

electrical problem

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2011 Hyundai Sonata Owner Comments (Page 4 of 20)

« Read the previous 20 complaints

problem #334

Jul 012020

Sonata

  • miles

A D V E R T I S E M E N T S

Tail light burns out after being replaced. Brake lights out; got hit from rear. Window brake light came on in the middle of night while car was parked... I was indoors, happened to notice it while looking out house window, apparently had been on for hours until I went outside and turned key and stepped on brake pedal repeatedly. I'm concerned that there's a electrical issue.

- Indianapolis, IN, USA

problem #333

Jul 112020

Sonata

  • 85,000 miles
I cannot wind up both drivers and passengers seats windows on MY2011 Hyundai Sonata

- Margate, FL, USA

problem #332

Jun 222020

Sonata 4-cyl

  • miles
Purchased the vehicle today and odometer reads different than reports. Report show it should 151,000 while the dash shows 92,583.

- Chicago, IL, USA

problem #331

May 042020

Sonata 4-cyl

  • miles

A D V E R T I S E M E N T S

Engine has been replaced 2 times doing 65 mph on freeway loses power in addition air bag light is on when they had car for 3 weeks they gave it back and said they didn't know what was wrong with airbags I had vehicle towed there 2 days ago again and spoke to [xxx] at palm springs Hyundai and he said they were trying to figure out problem with engine they installed and if I wanted him to diagnose airbags problems it would be a 150 diagnosis fee they had the car there the first time for 3 weeks and released it and til my daughter that they could not figure it out airbags issues are dangerous if they are not working correctly and deploy on freeway I told [xxx] service guy this but he giggled and said it would cost 150 dollars diagnostic fee which he said they checked several months ago I lent my daughter who drives my 8 year old grandson my vehicle because I was concerned of their safety I am a cancer patient and need a vehicle to get back and forth to my doctors when I asked [xxx] about a rental he brushed me off and said there were none available at this point I am going to call abc investigative reporters because I am at a wits end I really need help with this matter thank you [xxx] airbags also [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Cathedral, CA, USA

problem #330

Sep 012019

Sonata 4-cyl

  • miles
Well, very simply I was merging onto a parkway and pushing down on the accelerator, car was speeding up then I noticed that it seemed like I wasn't getting any acceleration. Looked at the dashboard and saw that it seemed all the lights were on and realized that the engine had shut itself down. Pulled off to the shoulder and tried to restart it (head kind of a whirring noise), but it wouldn't start.

- Social Circle, GA, USA

problem #329

Apr 232020

Sonata 4-cyl

  • 201,416 miles
My husband and I are the owners of two 2011 Hyundai Sonatas. Our complaint is based on the fact that we feel that Hyundai has either purposely or in ignorance created an inherent defect in its battery system. Over the course of the past nine years, on a number of occasions, we have had to have our batteries changed or disconnected to repair something else. Each time this happens, when the battery is disconnected or replace by an auto shop other than Hyundai, the check engine light turns on and there is an warning that the map sensor needs to be replaced. There is not enough room to clearly explain the problem here. I have, therefore, attached a letter below. The consumer stated codes P0106/P0605/P2110 appeared.

- Upper Marlboro, MD, USA

problem #328

Jul 012019

Sonata

  • miles

A D V E R T I S E M E N T S

While in drive and park, brakes lights and tail lights keep going out. Have replaced bulbs 4 times in less than a year. Both seat belt lights constantly flashes even when buckled up. Air bags and tire pressure light will not go out after resetting repeatedly. Dome lights no longer work in automatic

- Columbus, GA, USA

problem #327

Oct 152019

Sonata

  • 180,000 miles
The contact owns a 2011 Hyundai Sonata. The contact stated that while driving, the air bag warning light illuminated, and the horn and several controls on the steering wheel became inoperable. The contact also stated that the odometer was inoperable. The contact stated that an unknown air bag repair was performed on the vehicle at kendall Hyundai dealer, (15895 S dixie hwy, miami, fl 33157, (855) 510-3093). The vehicle taken back to the dealer to be diagnosed. The contact was informed that the sensor that go to the grounded wire needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 180,000.

- Mirmar, FL, USA

problem #326

Feb 052020

Sonata

  • 0 miles
On Wednesday, February 5, 2020, I was at a traffic light when someone motioned to speak to me in regards to my driver side brake light being out. I proceeded to drive to my dealership to get it changed out knowing it was probably just a burnt out bulb. The dealership service personnel informed me that the whole socket where the light bulb sits in had melted. This caused alot of erosion in the bulb socket and affected the wiring as well. I feel deeply that this can cause a fire considering the light bulb busted and caused the whole inside of the socket to melt. I payed $150 to repair the socket and wiring to fix the problem for now. I was told it may not last long. I'm hoping this problem doesn't linger and create more problems. I am very concerned on how these light bulbs pop and melt everything. I would like this to be treated as a safety issue. Please help me resolve this issue. Thank you for your time and have a great day.

- San Antonio, TX, USA

problem #325

Jan 212020

Sonata

  • 99,000 miles
This is the second time the left rear lamp has failed showing signs of burning. The lamp assembly was replaced by the dealership approximately 2 years ago. When the turn signal failed recently I went to change the bulb and discovered that's a socket showed signs of being burnt again.

- Loveland, CO, USA

problem #324

Dec 292019

Sonata

  • 122,000 miles

A D V E R T I S E M E N T S

I parked my car after coming from work, went back out to change my brake light that was out, after I couldn't change my bulb because its toasted to the harness, I tried starting up my car which it did, but my shift lock was locked on on park and my traction control came on and I have no brake lights.

- Cornville, AZ, USA

problem #323

Jan 022019

Sonata

  • miles
My radio hasn't worked all year. When I took it to the mechanic he informed me there is a recall on it and the company should fix it. Otherwise it would be appx $1000 just for the radio. Neither of my brake lights are working. Initially, it was just the passenger side. I have replaced it 4X this yr. A mechanic told me he believes it is an electrical problem. My brother informed me this weekend that I have absolutely zero lights in the back. This is dangerous. Asked the dealership twice to check my radio when I had my car there for other work (oil change, etc). The first time they said they forgot. The second time they told me they didn't have time. I feel they know there is a recall on the radio and just avoided checking it out.

- Aliquippa, PA, USA

problem #322

Dec 192019

Sonata

  • 0 miles
My Sonata when I'm driving turns off and I have to be pushing the ignition several times until I can turn it on. I changed the switch battery and it still does.

- Kissimmee, FL, USA

problem #321

Jul 012019

Sonata

  • 200 miles
This issue has been going on for months now. And I have driven around seeing many other Hyundai Sonatas with he same issue. When I hit my brake, the brake lights will not go out. I have finally figured out how to get them to go out (pulling my brake upwards with my foot). This has resulted in my lights staying on and my car dying a few times. It is a very dangerous problem as others are not able to tell when I am braking because my brake lights stay on wihtout putting my foot under the brake and pulling up on it.

- Abingdon, MD, USA

problem #320

Jul 012019

Sonata

  • 100,000 miles
In motion car surges and jerks forward randomly. There is a gas smell when driving and car begins to shake when engine is engaged. Backup camera will not engage at random times or car will not turn on with push to start system. Diagnoses engine and electrical issue but Hyundai won't include in their recall campaign.

- Las Vegas, NV, USA

problem #319

Nov 072019

Sonata

  • 111,000 miles
This vehicle has stalled on me while driving on the highway and streets. I've taken it into the shop for the problem was told the pc module is going out. The price to fix this a $2300. This should be covered on a warranty. They've me told that it's not. This is a major componet for these vehicle it should be cover. This has happened several times prior. When the vehicle accelerated there is smokes for the tail pipe.

- Aurora, CO, USA

problem #318

Oct 282019

Sonata

  • 96,000 miles
Out of nowhere when vehicle is sitting still, the airbag light keeps popping on. It will stay on for a while, but then go off. I went to have my oil changed and event though it was at 3,000 miles, the oil was low, dark, sludgy and metal shavings were found in my oil pan---engine sometimes sputters. Finally my interior lights won't go off, I have to just keep them to the off position versus "door" so that my battery doesn't drain.

- St. Louis, MO, USA

problem #317

Oct 032019

Sonata

  • 133,000 miles
2011 Hyundai Sonata. My headlights and interior started blinking off and on by themselves while I was driving at night for about a 30 or 40 second interval. Took to dealership and had it diagnosed and they found that the there was an intermittent internal fault with the multi-functional switch. Just got it back so I've only driven it about 50 miles at night so far no problem but it's too early to say for sure if this fixed the problem to my satisfaction. The problem only happened about 3 times but it is unpreditcable when the problem occurs but when it does happen and it's dark, it's not safe so we took it in right away on the third time because this was the longest period of time that the problem lasted. If you're having any problem like this, I suggest you get it looked at right away, very dangerous. It cost me $209 to have it fixed. The vehicle was moving about 55mph when this occurred. Date was 10-17-2019.

- Wilson, NC, USA

problem #316

Oct 092019

Sonata

  • 110,000 miles
Engine was replaced per extended warranty regarding recall. Vehicle was taken into massey Hyundai on 09/07/2019 and returned with reman motor on 09/12/19. Since then the vehicle has showed over heating and the backup camera displays a white screen on 10/09/19. Called after temp light came on and Hyundai has the nerve to say they will not pay for the tow. On top of that they person who answered the phone explained the wiring harness wasn't replaced. Temp light hasn't came back on due to my son not using the A/C. NHTSA has not held Hyundai or Kia accountable for issues they no doubt knew about. The recall should have been a buy back for these motors. We are not asking for a new vehicle. We just wanted the vehicle working properly. Now my son is stuck with a vehicle with all kinds of electrical problems due to Hyundai flaw. The electrical system was working fine prior to the engine replacement and Hyundai should be held accountable. NHTSA is starting to frustrate

- Clear Spring, MD, USA

problem #315

Oct 022019

Sonata

  • 112,000 miles
The air bag light has come on and won't go off.

- Hackettstown, NJ, USA

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