Air bag light is on as soon as car power on until it turns off passenger airbag is off I dont know if my airbags will deploy if I get in an accident . While driving steady speed of 50-60 mph while pressing gas sometimes it doesn’t increase speed but instead jerks until I let go of the gas and then depress it again it happenes maybe 2-3 times during a drive .
2009 Hyundai Elantra acceleration problems
18 complaints (7% of all complaints for this car). Typical mileage when it fails: 86,000. 7 crashes reported.
- owner complaints
- 18
- of this car's complaints
- 7%
- typical mileage
- 86,000
- crashes
- 7
- recalls
- 0
Which part fails
- Accelerator pedal1
At what mileage
Complaints by mileage at the time of the problem.
0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+
Hyundai Elantra acceleration problems in other years
Related recalls
No recalls on record for this model year.
Related investigations
Throttle control system vulnerabilities
The Office of Defects Investigation (ODI) of the federal safety agency received a petition letter dated October 10, 2021, requesting an investigation of possible defects in the electronic throttle control (ETC) system on certain Kia vehicles resulting in the opening of DP21-003. Accordingly, Model Year (MY) 2005-2016 Kia Optima/K5, MY 2006-2015 Kia Sorento, MY 2007-2016 Hyundai Elantra, MY 2007-2016 Hyundai Santa Fe, MY 2006-2015 Hyundai Sonatas are all part of the subject population. The petition was originally filed as a Vehicle Owner Questionnaire that can be reviewed at under reference (ODI) number 11439675.On November 12, 2021, ODI opened Defect Petition DP21-003 to evaluate the petitioner?s request. ODI performed trend analyses of the VOQs related to vehicle speed control issues for all the subject vehicles and found that none of the 52 Model/Model Year Hyundai/Kia vehicles demonstrated any actionable trend that warranted an investigation.Petitioners submitted 1119 VOQs and non-VOQ cases in which sudden uncommanded acceleration (SUA) or loss of motive power (LOMP) incidents were alleged.For the 1119 reports, 220 were incidents involving crashes, from which 69 subject Hyundai-Kia vehicles were inspected by Hyundai/Kia dealer technicians, Hyundai/Kia engineers, and/or third-party representatives.ODI found the inspections identified no vehicle defects related to the ETC system.Of the 220 crash-involved reports, 13 Event Data Recorder (EDR) records were downloaded successfully and 11 of those indicated driver error: (i.e.) pedal misapplication.A condition where the accelerator pedal is mistakenly applied instead of the brake pedal when the driver wants to stop the vehicle.In addition, ODI reviewed a scientific journal paper published in Forensic Science International in 2016 by Mr. Park et al ., as well as related test videos. ODI does not believe there is any evidence of uncontrollable SUA occurrences in any of the tests reviewed. the federal safety agency's Office of Vehicle Safety Compliance (OVSC) reviewed the allegations regarding the potential noncompliance with Federal Motor Vehicle Safety Standard No. 124.Based on the information provided, the Agency concludes there is insufficient information for us to determine if a possible non-compliance exists.Finally, both Hyundai and Kia informed ODI that all their vehicles manufactured after 2012 were equipped with an ETC management system, in which the engine speed will go to idle when the system sees signals from both the brake pedal and accelerator pedal at the same time; this is commonly known as the brake-throttle override system.After thoroughly assessing the material submitted by the petitioner, information already in the federal safety agency's possession, information submitted by Hyundai and Kia in response to an Information Request letter, and the potential risks to safety implicated by the petitioner's allegation, the federal safety agency does not believe that a formal investigation is warranted. After full consideration of appropriate factors, the petition is denied. A Federal Register Notice (FRN) further detailing the federal safety agency?s reasons for denial of the petition will be published.
DP21003
What 2009 Hyundai Elantra owners say
Most recent owner complaints, unedited.
Drove about 1 hour using cruise control part of the time. Don't usually use it, but used it 2 months ago with no problem. After 1.5 hour visit, drove home. Did not use cruise control, but at last 10 minutes acceleration issue started where car would "rev" even though I was not accelerating. Able to manage it with brake and normal driving. Tried to reset cruise (turn on/off), but car still had episodes of "revving". Did not accelerate to dangerous level and controllable. After car sat in garage for 2 hours, I drove out of neighborhood to empty stretch of road and accelerated to 50 with no problems and no revving of engine. Service check scheduled.
Acceleration faulty cruse control
Tl* the contact owns a 2009 hyundai elantra. The contact stated that the vehicle accelerated when the gear was placed in reverse. When the brake pedal was applied, the vehicle surged to an unknown high rate of speed. When placed in neutral, the vehicle failed to decelerate. As a result, the contact sideswiped another vehicle. A police report was not filed. The driver was not injured. A dealer was not contacted. The vehicle was parked at the contact's residence due to the failure. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The VIN was not available. The approximate failure mileage was 120,000.
I was pulling out of a parking lot today going about 20mph when my car started speeding up. I started braking, but the engine seemed to just want to go. I was coming to a stop sign and cars were coming so I just turned off the switch and it stopped. When I restarted it, it seemed normal and I drove very carefully home. I am going to try to rent a car till this gets checked. It scared me to death and has never happened before.
Car accilerater gets stuck and will accelerate when car is first started, whether stationary or in motion. Gas pedal will stick. Seems to function normally after the car has warmed up. I tapped on the gas pedal to see if it would un-stick and it accelerated at very high speed and was stuck until I pulled over and turned the car off. Acceleration dropped down slowly after I turned the car back on and left it in park. Resumed normally after.
Tl* the contact owns a 2009 hyundai elantra. The contact stated that the vehicle independently accelerated several times without warning. In addition, while parked in a driveway, the vehicle surged with a high rate of speed and independently crashed into the driveway. The driver was not injured. The vehicle was towed to a collision center and then towed to the dealer. The dealer diagnosed that the accelerator pedal and springs needed to be replaced because they were sticking. The contact had not received any confirmation that the manufacturer investigated the failure other than replacing the parts. The approximate failure mileage was 92,000.
Tl* the contact owns a 2009 hyundai elantra. While driving approximately 20 MPH, the accelerator pedal became stuck underneath the floor mat without warning. The vehicle's speed increased causing the contact to depress the brake pedal to the floorboard. The accelerator pedal released and the vehicle was able to be slowed down. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 87,000. Updated 04/16/15*lj updated 11/2/2015
Tl* the contact owns a 2009 hyundai elantra. The contact stated that while attempting to park, the vehicle accelerated independently causing her to crash into the front of another vehicle. The air bags failed to deploy. A police report was filed. The contact sustained a broken knee that required medical attention. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 91,000.
Sudden acceleration while in slow traffic. Seemed like it went full RPM. I held the brakes and put it in neutral. Rpms came down and I drive off. Kinda scary though.
Questions about the 2009 Hyundai Elantra acceleration
Does the 2009 Hyundai Elantra have acceleration problems?
Owners have filed 18 complaints about the acceleration of the 2009 Hyundai Elantra, 7% of all its complaints.
At what mileage do 2009 Hyundai Elantra acceleration problems start?
The typical (median) mileage in owner complaints is 86,000 miles.
Was there a recall on the 2009 Hyundai Elantra acceleration?
There is no recall for this problem on this model year.
What year does the Hyundai Elantra have the most acceleration problems?
The Hyundai Elantra model years with the most acceleration complaints are 2013 (50 complaints), 2012 (27 complaints) and 2014 (27 complaints).
Other 2009 Hyundai Elantra problems
Steering 134Airbags 42Brakes 27Electrical 24Engine 13Driver assistance 12Body 11Transmission 8Visibility 5Lights 3Tires 3Wheels 3Fuel system 2Seat belts 2Suspension 2
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