Alternator/generator/regulator Problems of Hyundai Sonata - part 1

Hyundai Sonata owners have reported 42 problems related to alternator/generator/regulator (under the electrical system category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Hyundai Sonata based on all problems reported for the Sonata.

car image   Alternator/generator/regulator problem of the 2007 Hyundai Sonata 1
Failure Date: 03/24/2018

April 3, 2018: two years ago we replaced the alternator in our car. Suddenly we are having issues with the battery light and seat belt warning lights coming on and off or staying on. We went online to see if there were complaints or issues of the same kind. We find that others have complained with the oil valve and alternator problem as well as the indicator lights coming on and off or staying on. So we took the alternator out and returned it because thankfully it was still under warranty. Therefore, this is now the third alternator for our car. However, if this is an ongoing problem, we want to be part of documented cases with the same issue. As of today, the car is running fine with the newest alternator. Our frustration is with the fact that this is the second one in two years to have to be replaced because of whatever reason. Thanks. . .

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car image   Alternator/generator/regulator problem of the 2008 Hyundai Sonata 2
Failure Date: 01/17/2018

Noticed oil was leaking onto my alternator, causing the car to shut off. Issue with the valve cover gasket.

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car image   Alternator/generator/regulator problem of the 2017 Hyundai Sonata 3
Failure Date: 09/16/2017

On Saturday 9/16/17 I was at a stop light sitting still when my car stalled and went dead. I looked at the dashboard and saw the engine light was on. The brake was frozen and before I could restart the car it rolled into the vehicle in front of me. There no damage to her Jeep. However my car hit the spare tire and rack on the back of her trunk, causing damage to the hood of my car, the grill and lower bumper. We did not exchange information, as she did not have damage to her car, so she left the scene. I drove the car home (2 miles from my house) and called the dealership. They told me to bring the car in. I brought it in the same day. Raymond, the service agent came outside to survey the damage and I told him what happened. He went to talk to the service manager and later came out and said they will take the car and put it on the machine to get a diagnostic reading to see why the car stalled. They gave me a loaner car and I left. On Monday, 9/19/17, I returned to the dealership after I got off work and was told by raymond that they could not find anything wrong thus far. He said he wanted to keep the car another day or two to take it for a drive and try to see if it would stall again. I agreed and asked raymond to also check the fuel injectors, fuel pump, fuel regulator, as my friend who is a car mechanic suggested to me that this can cause a car to stall also. He said okay. On today, Wednesday 9/21/17, raymond called me and said they took the car out for a drive and it did not stall, nor could they get a reading that anything was wrong when they put it on the machine. He said he could not understand why the car would stall. I asked for a diagnostic report and he said he could only give me a copy of the service ticket. I am afraid that this car could stall again and what if it happens while driving -- it could be much worst damage and bodily harm. Please help!.

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car image   Alternator/generator/regulator problem of the 2006 Hyundai Sonata 4
Failure Date: 08/28/2017

It all started with 3 bad alternators. The alternator was replaced 3 times in 2 years all brand new alternators. In those 2 years the car had trouble starting in interments. Turning the key 5-6 times the car will eventually start. Recently the car's headlights, air conditioning, and radio turn off when the car is slowing by applying the brake. Computer prompted no code for a problem. I have read about these same issues with the same make, model, and year. What is the malfunction?.

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car image   Alternator/generator/regulator problem of the 2007 Hyundai Sonata 5
Failure Date: 06/30/2017

For the second time, I have had oil leaking out of the valve cover or timing belt cover onto the alternator. So much so, that the alternator becomes soaked and "shorts out" according to a Hyundai dealer. Mechanics who have repaired this all agree that this is a hazard and public safety issue. "fire risk" and "sudden complete loss of control at highway speeds" were both mentioned. Hyundai states that my vehicle is out of warranty due to mileage and says that there is no recall for this problem despite the obvious risks that their mechanics and other mechanics mention. After very little effort in researching this problem on the internet, it immediately became obvious that this is a common recall for Hyundai concerning this engine(3. 3l v6). The recalls name other Hyundai products but for some reason skip my vehicle even though two reps at Hyundai customer service state that "you are describing the exact same problem". We have spent close to $1000 on this one issue in the last year. It nearly caused my wife to be stranded on the interstate 10hrs from home. And Hyundai admits that it is an issue but because my VIN is not listed, they refuse to help fix or refund any thing that has already been spent on this manufacture defect. Again, I emphasize that this is a public safety hazard that needs to be addressed. Despite recent repair, this problem still continues. The vehicle was traveling at 70mph each time this issue occurred. I have records of repair from independent mechanics and statement from Hyundai stating this problem. This occurred at 118,000 and 132,000 miles. It seems like it occurred prior to this as well(looking for records).

car image   Alternator/generator/regulator problem of the 2015 Hyundai Sonata 6
Failure Date: 05/08/2017

The contact owns a 2015 Hyundai Sonata. While driving 32 mph, the contact heard a loud noise underneath the hood. The overheating, steering, and battery warning indicators illuminated and the engine stalled. The contact pulled over to the parking lot. The vehicle was towed to the dealer where it was diagnosed that the alternator needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 66,000.

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car image   Alternator/generator/regulator problem of the 2008 Hyundai Sonata 7
Failure Date: 04/25/2017

I have the 3. 3l v6 engine that is also in two other vehicles made by hyndai. Both of those vehicles have been recalled due to the fact that the engine leaks oil from a faulty gasket and drips onto the altenator. This causes the alternator to fail prematurely and often without warning. I am on my third one now and it is showing signs of failure. This can be extremely dangerous on the freeway when the vehicle all of a sudden loses all electrical power. This scenario has happened to me twice now. No headlights, no dashboard indicators, no brake lights, no turn signals. At 70mph this creates an extremely dangerous scenario.

car image   Alternator/generator/regulator problem of the 2008 Hyundai Sonata 8
Failure Date: 03/06/2017

On the 3. 3l engine there is a fault in the intake manifold gasket that causes oil to leak onto the alternator causing premature alternator failure. If the vehicle loses power while driving this can increase the risk of a crash. This problem has happened on other vehicles with this same engine such as the veracruz and a recall has been initiated. For some reason the recall does not extend to the Sonata as it should. The following is from the veracruz recall involving the same engine. "Hyundai motor company (Hyundai) is recalling certain model year 2007-2012 veracruz vehicles manufactured from December 26, 2006, through July 24, 2012. The affected vehicles may experience an oil leak from the front cylinder bank valve cover gasket. If there is a sufficient amount of oil dropped onto the alternator, the alternator will be damaged causing the charging system to become inoperative. " my alternator has failed twice now, once while driving and I experienced a total loss of vehicle power. I was able to force the vehicle to the side of the road without incident but it easily could have gone bad on me as I was on the freeway in traffic. Once my alternator and subsequently my battery died I was left without control of the vehicle and without lights on the vehicle to warn other drivers of my situations.

car image   Alternator/generator/regulator problem of the 2009 Hyundai Sonata 9
Failure Date: 11/24/2016

Front engine valve cover gasket leaked oil onto alternator causing it to become damaged, which led to poor transmission shifting and then complete loss of all electrical power.

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car image   Alternator/generator/regulator problem of the 2007 Hyundai Sonata 10
Failure Date: 11/22/2016

My valve cover gasket leaked oil onto the alternator and caused it to fail prematurely. My research has uncovered many Hyundai vehicles having recalls with the same engine specs but Sonata is not covered. Why is this? why are so many consumers paying for this problem on the Sonata when other Hyundai vehicle (santa fe; veracruz) having identical engine setups are being recalled? I realize my Sonata is almost 10 years old but shouldn't it still be a consideration?.

car image   Alternator/generator/regulator problem of the 2009 Hyundai Sonata 11
Failure Date: 10/27/2016

Car started as usual and I was driving on a city street getting ready to get on the highway. All of a sudden the car would only go about 20 mph and reach 1000 rpm. It died shortly thereafter on the highway frontage road. All of the lights for abs, brakes, check engine etc. Came on but the emergency flashers would not work so I had to keep pumping the brakes so nobody would run into the back end of my car. It would not restart so I had to have it towed to the dealer. Dealer stated valve cover gasket had leaked oil onto the alternator and ruined it. That in turn ruined the battery. Car was repaired for $1400 including the tow and a rental car. After looking at Hyundai recalls, I noticed the one for the 2009 vera cruz (NHTSA# 14v415000) in which 61,122 units were recalled for this same problem. In researching the affected valve cover gasket, I found the same one was used on my 3. 3l engine that was listed as defective on the 3. 8l vera cruz engine. If that part was defective on that vehicle, why was the scope of this recall not extended to cover all possible vehicles that could be affected? I would like the cost of repairs refunded to me since Hyundai obviously knew this part was defective but didn't issue a recall to cover all affected vehicles.

car image   Alternator/generator/regulator problem of the 2008 Hyundai Sonata 12
Failure Date: 09/29/2016

Engine control module(ecm) failed without warning while the vehicle was stationary, requiring extensive repairs. May have also caused battery, alternator, brake switch, condenser fan, and other electrical components to fail.

car image   Alternator/generator/regulator problem of the 2008 Hyundai Sonata 13
Failure Date: 08/05/2016

I first noticed a problem with my 2008 Hyundai Sonata on Friday 08-05-16 when I exited a highway and my seat belt and battery indicator lights began to alternate flashing. I scheduled an appointment with my mechanic a few days later (they are closed on weekends). While driving the vehicle over that weekend those same two indicator lights would continue to alternate flashing when driven below 40 mph. On 08-09-16, while driving on the highway to the mechanic, numerous other indicator lights on the dash began to turn on one by one. After exiting the highway the vehicle began stalling and ultimately lost power. My mechanic replaced the alternator and noticed a significant oil leak near the alternator. He steam cleaned the engine and then found an oil leak from the "front valve cover gasket" was the cause. He replaced it. I'm aware other Hyundai models have been recalled for the exact same problem. We also own a 2007 Hyundai veracruz and we experienced the same problem to that vehicle one year ago, when the veracruz was 8 years old. This happened to my Sonata at the same "age", 8 years old. The veracruz damage was covered by a Hyundai recall. I believe the 2008 Hyundai Sonata needs to be included in Hyundai's recall.

car image   Alternator/generator/regulator problem of the 2006 Hyundai Sonata 14
Failure Date: 07/14/2016

While driving, the damper pulley seperates and the power steering fails along with the water pump and the alternator. This damper as it is called is a device that drives all the belt powered devices on the engine. I asked the dealer if there was a recall on this and the reply was no. How can a power steering failure not be a recall? when you are turning and the power steering fails I would say the majority of drivers would not be able to steer the vehicle out of this situation. Look online and view all the places that list this problem. This is a big safety issue the vehicle steers very hard and is difficult to control.

car image   Alternator/generator/regulator problem of the 2007 Hyundai Sonata 15
Failure Date: 06/16/2016

Same problem as described in 14v415000 Hyundai veracruz recall. While driving the esc warning light on, then intermittent battery + seat belt indicating alternator failure, caused by leaking valve cover. Can cause sudden failure. This defect is not isolated to the veracruz and perhaps the recall should be broadened.

car image   Alternator/generator/regulator problem of the 2006 Hyundai Sonata 16
Failure Date: 05/23/2016

The contact owns a 2006 Hyundai Sonata. While driving the vehicle, the contact heard an abnormal noise. The vehicle was taken to an independent mechanic who stated that the drive gasket was leaking onto the alternator and the alternator needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The contact referenced NHTSA campaign number: 14v415000 (engine and engine cooling); however, the VIN was not included. The failure mileage was 59,158. The VIN was not provided.

car image   Alternator/generator/regulator problem of the 2008 Hyundai Sonata 17
Failure Date: 04/25/2016

While driving the seat belt light came on. About a minute later the radio shut off. Next most of the dash lights came on , the engine would not make power/accelerate, and the braking seemed weak/jerky. Pulled into a parking lot as soon as I could. Now all dash lights were on/blinking and the radio, sunroof, windows etc would not work. Thinking it was an electrical issue I left it running to investigate. Next thing I know the car is overheating even though the gauge isn't showing it. Steam everywhere and the overflow popped the cap off. Shut the car off. Once the car cooled I was able to see what happened. Oil has been dripping on to the alternator from a leak in the valve cover gasket. This killed the alternator which in turn caused the control/braking/acceleration issues one it was on battery only. I'm assuming the fan was not cooling either which resulted in the overheating.

car image   Alternator/generator/regulator problem of the 2006 Hyundai Sonata 18
Failure Date: 11/01/2015

Oil leak from engine valve cover - left (front) side of 3. 3 v6. This is directly above alternator. Eventually alternator fails due to severe oil/dirt contamination. First noticed when battery light comes on at idle, showing charging problem. By then damage is done. Valve cover must be replaced along with alternator or problem will quickly recur. *there is currently a recall for Hyundai veracruz with same engine for the same problem. Sonata is not included, but a quick internet search shows this to be a common, well-known problem for many years.

car image   Alternator/generator/regulator problem of the 2011 Hyundai Sonata 19
Failure Date: 06/09/2015

Intermittent flashing and blinking dashboard and exterior light while turn signal or wipers are engaged after this incident happens the battery is drained of power. Battery test full load and alternator test good. The battery is wearing down because of this malfunctioning electrical problem. Last night (8/21) something new happened. When I went to start the car I found it dead again; yet the " lights on" indicator light was visible on the dash buy the light switch was in the off position. I have others witness this crazy malfunction over the past 4 months and yet the Hyundai dealership cannot replicate the problem and therefore will not replace the combo switch (as diagnosed by my corner mechanic).

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car image   Alternator/generator/regulator problem of the 2006 Hyundai Sonata 20
Failure Date: 02/11/2015

Oil leaked from valve cover onto alternator. Engine stalled and left me stranded on rural mountain road. Finally got towed home. Mechanic says it will cost nearly $1000 to replace valve cover gaskets and alternator. Car is 2006 Hyundai Sonata with 3. 3l 6cyl engine. I believe that this is the same engine and same problem that prompted the recall on 2007 Hyundai veracruz NHTSA campaign number: 14v415000. The existing recall should be expanded to include more Hyundai vehicle models that exhibit the same problem.

car image   Alternator/generator/regulator problem of the 2008 Hyundai Sonata 21
Failure Date: 08/15/2014

Engine died while driving. The cause was alternator failure due to oil leak from front valve cover. This is a 2008 Hyundai Sonata 2008 with 3. 3 liters v6.

car image   Alternator/generator/regulator problem of the 2006 Hyundai Sonata 22
Failure Date: 07/30/2014

The system warning lamps illuminated, then the engine shut off and would not restart. Evaluation showed that the alternator had failed and was covered with engine oil which had leaked from the front valve cover gasket onto the alternator. This failure is the same as NHTSA campaign number 14v415000, which covers another Hyundai vehicle.

car image   Alternator/generator/regulator problem of the 2009 Hyundai Sonata 23
Failure Date: 06/12/2014

The front valve cover gasket leaked oil down to my alternator, causing it to malfunction and making my transmission shift awkwardly.

car image   Alternator/generator/regulator problem of the 2007 Hyundai Sonata 24
Failure Date: 04/16/2014

I am reporting this because I see other models with the same engine having the same problem. My valve cover gasket leaked oil onto the alternator and caused it to fail prematurely. This has happened in April of 2014 and has now happened again in June of 2015. Other models utilizing the same engine have been recalled due to this problem. Will this model be recalled?.

car image   Alternator/generator/regulator problem of the 2002 Hyundai Sonata 25
Failure Date: 11/01/2012

My 2002 Hyundai Sonata radio comes on and off when ever it wants to and I notice when it rains it makes a really loud noise. I have to replace an alternator 3 times within the last 3 years. Not sure what could be causing this but it is very annoying. Please help!.

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