ELECTRONIC THROTTLE CONTROL INITIALIZATION.
full bulletin at NHTSA ↗2006 Hyundai Sonata cruise control problems
severe 32 complaints filed with NHTSA · avg repair $600 · see cruise control across all vehicles →
Failure mileage
Complaints
32
Recalls
0
Avg fix
$600
12crashes
3injuries
When does it fail?
Of the 32 cruise control complaints filed for the 2006 Hyundai Sonata, here's the actual mileage breakdown — failures cluster heaviest at 150,000+ mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Owners have filed 32 cruise control complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
No new NHTSA cruise control complaint has been filed on this vehicle in over 4 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering cruise control on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of 2006 Hyundai Sonatas describe a dangerous pattern of unintended acceleration—the vehicle either accelerates on its own when shifted into Drive or Reverse, or the accelerator pedal becomes stuck at highway speeds. Brake pedal pressure often fails to stop the vehicle, and the engine sometimes revs to 4000 RPM while brakes are applied. Multiple owners report this happens alongside illuminated ESC OFF, Check Engine, ABS, and airbag warning lights appearing simultaneously.
The cruise control has also failed, activating on its own during normal driving and refusing to disengage when the brake pedal is pressed. One owner reported the vehicle downshifting and revving to 4000 RPM while attempting to brake, forcing them into an intersection and spin-out.
Transmission and engine control issues manifest as uncontrollable revving when the car is idle in gear with the brake applied, loss of power steering or brake assist, and sudden loss of acceleration mid-drive. One independent transmission mechanic traced the root cause to a malfunctioning ECM (engine control module) sending erroneous signals to rev the engine and cut brake power simultaneously; reprogramming fixed the issue after a transmission rebuild had failed.
Multiple owners report their cars lit up with ABS, airbag, ESC, and Check Engine lights all at once. Some couldn't shift out of Park; others experienced speed sensors reading 0 MPH while driving. Dealers have blamed floor mats, but owners confirm their mats are secured. Several owners cite costs of hundreds of dollars for sensor replacements before reaching the actual ECM problem.
Same Hyundai Sonata cruise control reports on nearby years: 2007 · 2008 · 2009
Failure modes owners describe
Unintended acceleration—accelerator stuck or engine revving without pedal input
Owners report the vehicle accelerating on its own, often after shifting into Drive or Reverse, with the accelerator pedal becoming mechanically stuck or electronically commanding full throttle. Brake pedal pressure fails to slow or stop the vehicle. ESC OFF lights, ABS lights, and Check Engine lights frequently illuminate when this occurs. Multiple owners cite a loss of power braking simultaneous with uncontended acceleration.
When: Occurs across various speeds (5 MPH to 80 MPH) and driving conditions. Some incidents happen at startup or when shifting into gear from Park. Several complaints cluster around cold weather driving and shortly after vehicle startup.
Symptoms owners cite: Engine roars or revs loudly without driver accelerating; Vehicle accelerates uncontrollably despite foot off gas pedal; Brake pedal becomes soft, unresponsive, or loses power assist; brakes only minimally slow the vehicle; ESC OFF light illuminates on dashboard; Check Engine light comes on; ABS light and airbag warning lights appear; Engine RPMs jump to 4000+ despite brake application; Downshifting does not slow acceleration; Emergency brake ineffective at stopping forward acceleration
Codes mentioned: ESC OFF warning light, Check Engine light, ABS light, Airbag warning light
Repairs/costs cited: Owners cite replacement of throttle sensor, accelerator pedal assembly, gas pedal assembly, shift sensor, torque converter, and ECM/control module reprogramming. One transmission shop found the ECM was sending incorrect signals to rev the engine and cut power to brakes. Software reprogramming of the ECM resolved the issue in at least one case. Hyundai dealers have offered floor-mat explanations; owners dispute this as their floor mats were secured. One owner paid several hundred dollars for failed sensor replacements before the root cause (ECM) was identified.
Recalls/TSBs owners mention: Hyundai dealers have been inconsistent: some deny the problem exists or blame floor mats; others have replaced accelerator pedal assemblies, throttle sensors, and reprogrammed ECMs. One regional Hyundai representative acknowledged similar incidents in 2007 and authorized gas pedal assembly replacement. Hyundai corporate has directed some owners back to dealerships for test-drive diagnostics without offering solutions. No recalls were identified by owners who searched NHTSA records.
Cruise control malfunction—unwanted activation and failure to disengage
Owners report cruise control activating on its own during normal driving or engaging at unintended times. Once engaged, the cruise control refuses to disengage when the brake pedal is pressed, causing the vehicle to maintain or increase speed. One owner reported the cruise control set light and brake pedal pressure proving insufficient to override the cruise speed; downshifting to neutral was required.
When: Occurs above 25 MPH. One incident occurred during a left turn into a neighborhood after the driver tapped the brake to disengage cruise control.
Symptoms owners cite: Cruise control light activates without driver pressing cruise control button; SET light illuminates on dashboard; Brake pedal pressure does not disengage cruise control; Vehicle maintains or increases set cruise speed despite brake input; Vehicle downshifts and revs to 4000 RPM attempting to overpower braking; Airbag, ABS, and ESC OFF warning lights illuminate simultaneously
Codes mentioned: Airbag warning light, ABS light, ESC OFF light
Repairs/costs cited: No repairs were documented in the narratives provided. One owner placed the vehicle in neutral and swerved to avoid a collision; the vehicle came to rest only after this evasive maneuver.
Transmission/drivetrain control malfunction—revving in gear while idle, loss of braking power
Owners report the engine revving and attempting to drive forward when the vehicle is idle in Drive or Reverse, even with the brake pedal applied. The brake loses power assist and cannot hold the vehicle. One owner's mechanic discovered the control module (ECM) was malfunctioning, sending erroneous signals to rev the engine and simultaneously cut power to the brakes. The problem progressed from initial hesitation at red lights to uncontrollable revving. Transmission rebuilds did not resolve the issue until the ECM was reprogrammed.
When: Begins with light symptoms at traffic lights and progresses over days to severe drivability issues. One incident involved a month of diagnostics before the ECM was identified as the culprit.
Symptoms owners cite: Engine sputters and dies at red lights while in Drive with foot on brake; Engine revs uncontrollably when placed in Drive or Reverse; Brake pedal loses power assist and cannot hold vehicle in gear; Brake and engine cut in and out (jerking, hesitation); Check Engine light illuminates; Engine RPMs surge to 4000+ while idling in gear; Vehicle lurches forward or backward when shifting into gear
Codes mentioned: Check Engine light
Repairs/costs cited: One owner underwent transmission rebuild (costs not specified). Transmission shop then identified the ECM as faulty and ordered Hyundai software to reprogram it, which resolved the problem. Another owner replaced a shift sensor with no effect before the root problem was correctly diagnosed.
Recalls/TSBs owners mention: One transmission shop mechanic reported that Hyundai had no recall for this issue despite multiple complaints in the 2006 Sonata model range, as no deaths or serious injuries had yet occurred.
Loss of throttle response and ESC-related drivetrain shutdown
Owners report sudden loss of acceleration capability while driving, often accompanied by ESC OFF and Check Engine lights. The vehicle loses power and coasts as if in neutral. Some incidents occur while the driver is actively trying to accelerate; others happen intermittently during normal driving. One owner's trip of 4.5 hours became 8 hours of repeated loss of power requiring engine restarts.
When: Multiple incidents over a single trip or spread across several driving sessions. One owner experienced repeated loss of throttle on a long highway journey, requiring multiple engine restarts.
Symptoms owners cite: No acceleration response from gas pedal input; Vehicle loses power mid-drive and coasts like it is in neutral; ESC OFF warning light illuminates; Check Engine light comes on; Vehicle requires restart to regain acceleration; Engine sputtering with RPM fluctuations (drops then surges); Vehicle jerks forward and backward as RPMs fluctuate; Loss of acceleration during highway driving
Codes mentioned: ESC OFF light, Check Engine light
Repairs/costs cited: No specific repairs are detailed in the narratives; one owner mentions planning to take the car to a shop.
Multiple simultaneous warning light failures—ABS, airbag, ESC, Check Engine, and speed sensor malfunction
Owners report clusters of warning lights illuminating at once (ABS, airbag, ESC OFF, Check Engine) often without a clear single cause. One owner also reports a speed sensor reading 0 MPH while driving, the car unable to exit Park, and multiple lights staying on continuously. Another owner's car would not leave Park without lights also being present. These multi-system failures suggest an underlying electrical or control module issue.
When: Failures occur suddenly without prior warning in some cases. One owner experienced all failures within 2 days after the car had been functioning normally.
Symptoms owners cite: ABS light illuminates; Airbag warning light stays on; ESC OFF light comes on; Check Engine light activates; Speed sensor reads 0 MPH on dash; Vehicle will not shift out of Park; Multiple lights do not turn off; Vehicle nearly drove off the road when lights appeared
Codes mentioned: ABS light, Airbag warning light, ESC OFF light, Check Engine light, Speed sensor fault
Repairs/costs cited: No repairs documented in the narratives. One owner reports the car has been undrivable for 2 months.
Synthesized from 32 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
The contact owns a 2006 Hyundai Sonata. The contact stated while driving approximately 65 MPH, the accelerator pedal became stuck and was unable to reduce speed while depressing the brake pedal or shifting into neutral. The contact was able to pull over to the shoulder and place the vehicle into the park. The contact stated no warning light was illuminated. The vehicle was towed to the residence…
Had cruise control trouble with your 2006 Hyundai Sonata?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the cruise control problem on the 2006 Hyundai Sonata?
It's a meaningful issue. 32 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $600.
At what mileage does the cruise control typically fail?
Across the 27 complaints that reported odometer mileage, most cruise control failures cluster between 52,749 and 150,000 miles, with the median around 102,085. A quarter of owners report trouble before 52,749; a quarter make it past 150,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $600 for cruise control repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to cruise control?
No active recalls currently cover cruise control issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2006/Hyundai/Sonata.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.