general problems of the 2018 Hyundai Elantra

Passenger side brake light keeps going out and has been replaced twice.

My husband filed a complaint about the lighting on his Hyundai sonata and I have a Hyundai Elantra that is doing the same thing. Twice now while I’ve been driving at night, my headlights have gone off an and come back on by themselves. They were off about 15 seconds each time. Then this week I had my back break light (the one close to the windshield) and the passenger side headlights go out suddenly. My car is a 2018 Elantra with 70k miles on it. I just got through replacing both headlights about a year ago when my car had 60k miles on it.

On the freeway going about 45 mph tried to speed up and switch lanes as I pressed the gas you can hear the acceration but the car didnt increase in speed the whole dashboard went blank (black). Car was unresponsive. Its very dangerous that the car falfuctions in critical conditions like being on the freeway. Yes I have tooken it to Hyundai and they never find anything wrong. Also at times the car wont even turn on. No type of waring lights on dashboard.

My daughter is in college in tallahassee. About 4 months ago, she told me that when she presses the accelerator, the car doesn’t go as fast as it should. In July 2022, the car was serviced in tallahassee at the dealership; however, none of this is reflected on the receipt. In November she came home to palm beach county, on her way back, she told me that she was having the same issue when she pressed the accelerator. She made it to tallahassee and I had her take it to the dealership. The service manager called me and said she had gone over the recommended miles for an oil change and this may have caused damage to the engine; however, he decided to change her oil and spark plug which coated about $318. She drove the car for a few days and noticed a loud tapping noise; also, the car rolls in all gears, and the same issue with when pressing the accelerator. Upon taking it back to the dealer, they told me that the engine would have to be replaced at a cost of $9500. The car had sat at the dealer since November 14, 2022 because no one would call back; provide updates after I started questioning the issues with other vehicles like this one based on my research. In addition, I was told the manufacturers warranty did not apply to my daughter’s car because she was the 2nd owner. I had the car towed today, November 30, 2022 to aamco. It is available if needed. This issue has put my daughter at risk because tallahassee is very hilly. The vehicle not getting enough speed to drive up a hill, pass vehicles or possibly be hit from behind puts my daughter and others at risk. The dealership has indicated there is a problem with the engine that will require it to be replaced. The vehicle was inspected by werner Hyundai in tallahassee who said there was an issue with the engine. It is now at aamco. Outside of my daughter indicating the problem, I am not aware of any other warnings.

My headlights on left side (low beam)and right side (high beam) have each burned out three times. My high mounted brake light has been replaced at least five times as well as my left and right brake lights. Now both of my tag lights went out and a right tail light. Also brakes keep grinding even after I replaced pads and rotors and ntb national tire is telling me it’s in electrical braking system or calipers. My car had 94,000 miles on it and I’ve never had any car have caliper problems with low mileage.

Financed last year (2021) at 38,000 miles, financing a vehicle I wish I knew to do research before hestitly excepting my first offer, first waring was on the test drive. The car had to be towed back to dealership because the battery was dead. In the sub-zero cold, the battery with read low and this causes electrical issues, from remote start not working to unable to open the doors. The more common and reaccuring issue that is getting worst is the lack of excellaration when taking off. Realizing this drastic difference recently, I know there is some thing happening, but I have not had much good customer service when I have brought issues to dealership and services center. Also issues with harness for the back left lights. The harness that holds the bulb keeps burning out. Dealer has never fixed when I immediately experience this issue and they just replaced the bulb twice until they realized the real problem and told me it would cost me $160.

While driving at night the headlights turn off. The headlights are set to auto at all times. The headlights will come back on when the switch is moved to the on position. This occurs almost nightly.

In regards to my 2018 Hyundai Elantra limited currently with 47000 miles, driving and noticed the a/c temp display which also controls fan speed stopped working, display was blank. Checked all other electrical equipment inside car with no problem except that the heated seat function didn't work also. While doing an exterior inspection noticed that all lights except the headlights worked. After the interior and exterior inspection and no error codes or indicators on the dash, I had the alternator, battery and starter checked along with probe testing every fuse in the car and under the hood checked and everything was fine. The car has been perfect up to this point which is alarming because if the headlights go out while driving at night or in the rain this is a safety problem and driving citation. My only indication of when this happens is if the a/c control display goes out. The problem is intermittent and hopefully it won't happen again and I couldn't find any other similar things like this happening to others.

My car will shut off as I’m driving it. I was going thru a busy intersection and my car turned off, I was in my car with my 3 babies traffic backed up and almost got slammed into. I had to get out and push my car to the side of the road. The check engine light started flashing then the whole dashboard started flicking.

It appears the parking lamps stay on when car turned off while headlights are in auto. This leads to unintended battery drain leading to unoperational car. Per owner's guide: the system automatically turns off the parking lamp when the key is removed (remote key) or when the driver turns the engine off (Smart key) and opens the driver-side door. This does not meet the owner's guide's language. Dealerships and inspection services did not confirm/reproduce this. There are no warning lights or indicators of this.

My multifunction switch appears to be defective. I have taken it to 2 different dealerships to be looked at. They have been unable to replicate any issues either time. Occasionally at night time the headlights will randomly turn off. This happened in auto mode as well as when it was pouring down rain and the wipers were on. The headlight indicator on the dash stays lit but the lights themselves turn off. This also happened driving to work in the early morning. When it is cold outside and also randomly the left signal indication doesn’t work in the lane changing function. I sometimes have to hit it 3-4 times before it decides to come on. Neither dealership I have used knows what is happening with the vehicle and I am not keen to spend $600 to have it fixed if it’s not going to 100% fix the issue.

About a couple weeks ago.

On 10/13/2018 I turned ignition on car to start and the car began rumbling and bumping and the shut down and the check engine light came on. I was stationary in my parking space at home when this happen. . . It also began bumping and dragging if to shut down again on 10/20/2018. Each time car was taken to dealership. . Next, the instrument panel when blank while driving on 10/20/2018. Now this time it was driven to dealer, they could not duplicate the mal function. This was on 10/23/2018 and 10/29/2018 at lynnes Hyundai. . On 10/16/2018 vechicle was towed to hudson Hyundai for the same bumping. They said the tech found a shortage ignition coil and a cylinder misfired and he cleared the codes. Coming home from lynnes on 10/29/18 after they said they could not find anything wrong with car, it began to rumble again. I am not comfortable driving this car. What if your in high speed traffic and it shuts down and your instrument panel goes black. Could be a tragedy, if not someone's death.