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10.0

really awful
Crashes / Fires:
1 / 4
Injuries / Deaths:
0 / 0
Average Mileage:
29,363 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 electrical problems

electrical problem

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2012 Hyundai Sonata Owner Comments (Page 1 of 3)

problem #41

Dec 202014

Sonata

  • 34,000 miles

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

While driving in the city or highways using my turn signals, hazard lights or brakes my tail light keeps overheating and melting the plastic casing, I have replaced the casing already and the bulbs keep blowing, the plastic from the new casing looks burned and continues to have smoke. I have replaced the bulbs weekly over a year to date. These bulbs are all being replaced by a reputable shop and not an individual. I have receipts to confirmed the number of bulbs that have been replaced since my purchase in Dec 2014. I stopped by clem's Goodyear to inspect the constant bulb outage. I was in formed the entire case has melted due the type of bulbs Hyundai manufacturer are using and could potentially cause a fire or an explosion. The mechanic went on to say it's to close to my gas tank and potentially be detrimental. The mechanic called Hyundai dealership for lighting kit and was informed they keep this kit heavily stocked because of the number of complaints they get regarding the read break lights frequent outage.quoted price $540. So I stopped by bentley Hyundai to discuss the information provided to the mechanic. I overheard the service mechanic customer service rep say to a mechanic we got another one with the same issues. When the service rep returned he informed they have the part and quoted me $440 to replace. This is an indication they is a lighting/electrical mechanical problem that could potentially kill someone. A recall should be issued before it's to late.

- Huntsville, AL, USA

problem #40

Jan 022016

Sonata

  • 98,000 miles
Tail light keeps overheating and melting the plastic casing, I have replaced the casing already and the bulbs keep blowing, the plastic from the new casing looks burned already within a month and within two weeks of the second bulb replacement it is burnt out again. These bulbs are all being replaced by a reputable shop and not an individual.

- Carrollton, TX, USA

problem #39

Dec 252015

Sonata

  • miles
The contact owns a 2012 Hyundai Sonata. The contact stated that the vehicle stalled without warning. The contact had to coast the vehicle over to the side of the road and was able to restart the vehicle. The vehicle was taken to an independent mechanic who diagnosed that there was a catastrophic motor failure and that the dealer needed to provide a repair. The contact later received notification of NHTSA campaign number: 15V568000 (engine). The vehicle was kept at the dealer for longer than two months. The dealer replaced the part for the recall repair, but the failure recurred. The contact was informed that the motor and starter needed to be replaced. The manufacturer was notified of the failure. The failure mileage was not available.

- Robstown, TX, USA

problem #38

Mar 072016

Sonata

  • 92,222 miles

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

My car is slowing down while I'm driving and in order to pick up speed I have to take my foot off of the gas and put it back on to accelerate. I am also having electrical issues which includes changing my brake lights several times every couple of months. The electrical issue also includes my check engine light, seat belt light, check tire light and truck light on when it is not open. The electrical problem is also affecting my doors and alarm system I.e. my car is currently only manual when it should be automatic.

- Chicago, IL, USA

problem #37

Jan 232016

Sonata

  • 73,000 miles
1/23/2016 8:02 am I received a call from my wife who was driving her 2012 Hyundai Sonata on the I-95 in South Florida on the way to work going approximately 70 mph, when she went to accelerate to overtake a car driving slower. All the lights on the dashboard went on and the car completely lost acceleration power and the speed dropped all the way down to 40 mph. When the speed reached 40 mph, she could not accelerate anymore and hence quickly pulled off to the side of the road (upon my request). Due to the heavy traffic, she was extremely lucky not to get into an accident. When I arrived to switch cars with her, the car started fine and accelerated appropriately. I took it straight to the Hyundai dealership who after running diagnostics came up the following: No codes stored in memory and no signs of what could have caused the car to act like this. They recommended a throttle body cleaning which is currently being completed (I am writing this from delray beach Hyundai). They stated the throttle body sticking may be the cause, but went on to admit they really had no idea as diagnostics gave them no information. After this incident, we are concerned that the car is no longer safe to drive and the fact the dealership has been unable to come up with any cause is even more of a concern.

- Boynton Beach, FL, USA

problem #36

Sep 152014

Sonata

  • 9,308 miles
****buyer beware*****purchased this car in Feb 2014 with only 230miles on it and in Sept 2014 I pulled out of my home turned right and had no issues...although about 50 feet later I stopped at a red light on a fairly busy street with mid to high traffic, I stopped and once in motion, immediate my ets light came on the dash and my steering completely froze up and steering wheel lock up. I was in motion going about 40 mph, not yet up to the 45 speed limit. There were cars all around me and I had to physically force my car to right with my emergency lights on. I was lucky this didn't happen on my way to get my child from school, or after. Otherwise it would have been a completely different situation. The Hyundai corporation, has refused to buy back their default death trap of a vehicle and had the nerve to offer a "month car payment". my life could have been taken from me and they only offer a payment. Not acceptable. Buy back your known defective vehicle. I have had four recalls on this car in less than 3 years of purchase.

- Loveland, CO, USA

problem #35

Dec 182015

Sonata

  • 60,000 miles

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

The vehicle has a history of losing power completely. At this point I am unable to enter the car with the keyless entry, you have to do it manually. The car was parked on the street. Once you put the key in the ignition the horn/alarm goes off and doesn't stop. It also seems to be revving while it is in park. While driving I experience little power surges from the car where it accelerates with me trying to do anything. There was also another instance where the car would not start once the emergency brake was engaged. Once disengaged the car started with a little hesitation. I only had the car for 6 months and have had to bring it back to the dealer at least 6 times.

- Mount Vernon, NY, USA

problem #34

Jan 012015

Sonata

  • 12,000 miles
During cold weather, the 2.0 turbo Sonata engine will cut power to the car and go into a "limp" mode if an over boost code (usually P0605 & P2110 ), is triggered. This causes an unsafe situation as there is very little power available to get out of the way or can cause a rear vehicle crash. There have been a couple times where this has happened on 0 degree days or even at 30 degrees. This will happen at any speed if the boost pressure is exceeded and makes for a very dangerous situation. The ECU should not be cutting power or fuel, it should be reducing the boost to compensate for temperature. The only way to restore the power to the engine, is to shut the car off and restart.....codes will still be active but the power will restore itself.

- Madison, WI, USA

problem #33

Aug 252015

Sonata

  • 54,000 miles
The contact owns a 2012 Hyundai Sonata. While driving at 25 mph, the instrument panel lights flickered and the vehicle stalled. The vehicle was taken to the dealer, but was not diagnosed. The vehicle was repaired, but the failure recurred. The manufacturer was not notified of the failure. The failure mileage was 54,000.

- Paso Robles, CA, USA

problem #32

Feb 092015

Sonata 4-cyl

  • 21,348 miles
Earlier that day the wrench was lit up on the dashboard, but it disappeared. I was driving out of my neighborhood at about 15-20 mph and the screen read "warning! do not drive! irreparable damage to ? I can't remember" it started to freeze the driving. Then I parked it and it would not start back up. It was towed to the dealer and they replaced the battery and hpcu. It scares me to think what would have happened if I was on the freeway. I bought this car April 20, 2014 and now can just get 2/3's what I paid for it. Sad, but true. When I get some money I will be trading this in as I am nervous driving this car now.

- Arlington, TX, USA

problem #31

Jan 062015

Sonata

  • 78,000 miles

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

The tire pressure monitoring system (TPMS) has displayed erroneous tire pressure readings during cold weather climates numerous different times despite having the correct psi or adding air to reach an ultimate psi reading. This has been an issue with other models of Hyundai vehicles with the TPMS feature according to other owners.

- Homewood, IL, USA

problem #30

Dec 232014

Sonata 4-cyl

  • 72,340 miles
Starter and battery needed to be replaced on 2012 Hyundai Sonata. Not covered by my warranty.

- Ronkonkoma , NY, USA

problem #29

Nov 282014

Sonata 4-cyl

  • miles
When going to work I parked my car in the garage. When I came out to try to start it said check brakes. The brakes were not on, I then pressed the brakes and pushed the button and it said it needed the key. I put it in the slot and it still said the same the whole time making the sound when it starts. The tow number and the closest dealer said to hold the brake in and the key against the push for about thirty seconds, still did not start. The tow truck hired to come asked me to take the key inside the key and put it in driver's door and lock and unlock then do the thirty second brake with pushing the button again still would not start, towed to dealer service manager acted like he never had anyone ever complain about this before. I asked him how road assistance and the other dealer and the tow truck driver knew. I cannot wait until I can get out of this lease.

- Hendersonville, TN, USA

problem #28

Sep 032012

Sonata 4-cyl

  • miles
The car hesitates during start up! I have had it into the shop approx 9 times since we have had the car. This last time (approx 30K miles) they told me it was normal. I am afraid this car is an accident waiting to happen!

- Rotonda West, FL, USA

problem #27

Jan 292014

Sonata 4-cyl

  • 35,000 miles
Vehicle was overheating. Took to dealership and was told the wires were melting together and the wiring harness needed to be replaced. After replacing the wiring harness it was one problem after the next that the dealership contributed to the overheating. 3 turbo's replaced, the front and rear wiring harness, the computer control module, some tubes and hoses and 6 mos later....the car seems to be running again but now there is a recall on the transmission...ugh. I tried to have Hyundai let me out of the lease since I only had a few months left. Consumer Affairs passed the buck to Hyundai lease and vice versa. It is a nightmare to work with this corporation. Filed a complaint with the BBB and was able to get reimbursed for two payments since they had my car in for repair for over 60 days but they would not let me out of the lease. Will never have a Hyundai again because of Hyundai motor America and the way they pass the buck, will not take responsibility, and take care of their customers. They are a horrible corporation.

- Loveland, CO, USA

problem #26

Mar 032014

Sonata 4-cyl

  • 35,000 miles
I took my car into the Hyundai dealer for a 30,000 service. They said the computer has an upgrade to the software. After the upgrade, the cruise control speeds up by 4 - 5 miles per hour when it is set. For instance, if you set it at 65 mph, it will speed up to 69 or 70 mph and then slow back down to 65. It does this when you initially set the speed or if you brake and then hit the "resume" button. In the case of "resume", if you initially set it at 65 mph and use the brake to slow down and then use the "resume" button, the car will speed up to 69 or 70 before going back down to 65. The cruise control will do this no matter what speed you initial set it at. I took the car back in and the service people thought it was strange. So they said they ran the upgrade to the software again, but it has the same issue. They then told me that the surge in speed was within an acceptable tolerance range. I have owned many cars with cruise control and none of them have ever done that and this car did not do it prior to the software upgrade. It is pretty dangerous if you are not paying attention.

- Albuquerque, NM, USA

problem #25

Oct 082013

Sonata

  • 18,000 miles
First let me tell you how many times I brought the car in for service, the service manager [xxx] telling me they could not find anything wrong, replaced the A/C unit. Blue tooth fuses have blown out several times no radio, they replaced the fuses, then replaced the battery... there is a electrical short some where.. the date above in October I was so mad I was traveling on a inter state highway in the fast lane, then my car lost power, , at 67 mph no brakes no nothing thanks god.. I had to wait to power down... I waited for about 20 minutes shaking... I kept trying to start the car with the push button start nothing happened I then called Hyundai road service... after waiting... finally the car started.. I had power but no radio, ,, I drove off the inter state and it was only 2 miles from the car dealership.. I was so mad also my blue tooth and one light burned out.. after talking to the service mgr.. he told me to wait in which I did...2 hours later a service guy came to talk to me and said he could not find nothing wrong again.. except that he would replace the light bulb... after that I asked the sales rep to put me into another car.. they said ok but for $50 more a month and a loss of 2 years paying for the car... I then went to the same owner dealership and they worked with me for 2 days I got a new car $20 more a month and a loss of 2 years in payments... please note that a new service manager at the dealership said he worked at another dealership and told me it looks like the starter switch was the problem.. after seeing the GM recall I guess anything is possible information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Hollywood, FL, USA

problem #24

Nov 092013

Sonata

  • 41,624 miles
Tail light assembly on drivers side broke off from the car, it was parked in the driveway when we noticed it. There was no accident, no damage or evidence of someone hitting it. Looks like the plastic part of the light holding it to the bolts just broke off. Dealer said they have no knowledge at all, of this happening.

- Rochester, NY, USA

problem #23

Nov 092013

Sonata

  • 41,624 miles
Tail light assembly on drivers side broke off from the car, it was parked in the driveway when we noticed it. There was no accident, no damage or evidence of someone hitting it. Looks like the plastic part of the light holding it to the bolts just broke off. Dealer said they have no knowledge at all, of this happening.

- Rochester, NY, USA

problem #22

Nov 092013

Sonata

  • 41,624 miles
Tail light assembly on drivers side broke off from the car, it was parked in the driveway when we noticed it. There was no accident, no damage or evidence of someone hitting it. Looks like the plastic part of the light holding it to the bolts just broke off. Dealer said they have no knowledge at all, of this happening.

- Rochester, NY, USA

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