2009 Hyundai Accent Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2009 Hyundai Accent and How to Fix Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2009 Hyundai Accent cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty sensor can lead to incorrect readings, causing issues with engine performance or triggering warning lights on the dashboard.
  • Control Module: A faulty control module can result in erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent acceleration and poor engine response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2009 Hyundai Accent cruise control isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

When the throttle position sensor fails, the engine's computer tends to overcompensate with fuel, leading black exhaust coming from the tailpipe. There is a strong possibility of engine misfires, and the check engine light will come on.

Throttle position sensors can also develop "dead spots," or certain places along the throttle curve where it doesn't get a reading. When this happens, the above symptoms can occur but then stop when you further press or let off the gas pedal.

In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

What are the steps to diagnose the cruise control issue in a 2009 Hyundai Accent?

To effectively diagnose cruise control issues in your 2009 Hyundai Accent, start by checking the fuse box for any blown fuses related to the cruise control system, as a blown fuse can disrupt power to critical components. Next, inspect the cruise control cable for any signs of damage and ensure that the clockspring and brake switch are functioning properly, as these can also impact the system's performance. If the initial checks do not resolve the issue, proceed with a thorough troubleshooting procedure that includes verifying the symptoms and analyzing the schematic diagram of the cruise control system. This methodical approach allows you to identify and address the most common problems before considering professional assistance, ensuring that you cover all bases in your DIY diagnosis.

What common issues cause cruise control failure in a 2009 Hyundai Accent?

When experiencing cruise control failure in a 2009 Hyundai Accent, it's crucial to identify the potential issues that could be at play. One of the most common problems is a malfunctioning control module, which can disrupt the entire cruise control system. Additionally, sensor or switch failures, particularly with the throttle position sensor, can cause erratic engine behavior, such as excessive black exhaust. Another frequent culprit is the brake light switch; if it malfunctions, it may prevent the cruise control from disengaging when the brake pedal is pressed, complicating the ability to shift out of Park. Electrical issues, including faulty wiring or poor voltage supply, can also hinder the cruise control's functionality. Lastly, don't overlook simpler problems like a blown fuse or a defective brake pedal switch, as these can often be the root cause of the issue. By understanding these common failure modes, DIYers can systematically diagnose and address the cruise control problems in their Hyundai Accent, ensuring a smoother driving experience.

How urgent is it to address the non-functioning cruise control in a 2009 Hyundai Accent?

Addressing a non-functioning cruise control in a 2009 Hyundai Accent is crucial for both safety and comfort. When this feature fails, it not only diminishes the convenience of maintaining a steady speed during long drives but also increases driver fatigue, as more frequent pedal adjustments are required. Moreover, a malfunctioning cruise control system can signal deeper issues within the vehicle, such as problems with control modules, sensors, or throttle actuation, which may adversely affect overall performance and fuel efficiency. Ignoring these symptoms can lead to more severe complications, including safety risks if critical components like the throttle position sensor or brake pedal switch are involved. Therefore, it is essential to address cruise control issues promptly to ensure a safe driving experience and to prevent further damage to your vehicle. Taking action now can save you from more extensive repairs and enhance your driving comfort in the long run.

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