2009 Acura TSX Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2009 Acura TSX and How to Fix Them

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2009 Acura TSX cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to 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 throttle 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 Acura TSX 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.

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.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

What are the steps to diagnose the non-functioning cruise control in a 2009 Acura TSX?

When diagnosing the non-functioning cruise control in a 2009 Acura TSX, it's essential to adopt a systematic diagnostic approach that prioritizes simpler checks before delving into more complex issues. Start by inspecting the fuses associated with the cruise control system, as a blown fuse can often be the simplest explanation for malfunction. Next, evaluate the brake pedal and throttle body; any irregularities here can directly impact cruise control performance. Following this, verify the signals being sent to the cruise control controller to ensure they are functioning correctly. If these initial checks do not reveal the problem, examine the actuator for any signs of failure, as it plays a crucial role in the system's operation. Finally, if all else fails, consider the possibility of a faulty controller that may need replacement. By following this structured approach, you can effectively identify and resolve the issues affecting your vehicle's cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2009 Acura TSX?

When troubleshooting cruise control issues in a 2009 Acura TSX, it's essential to consider several common problems that could be at play. A faulty cruise control switch is often the first suspect, as it can prevent the system from engaging or disengaging properly. Additionally, a blown fuse within the cruise control circuit can lead to complete system failure, making it crucial to check the fuses. Speed sensor issues are another frequent culprit; if the speed sensor is malfunctioning, it can disrupt the cruise control's ability to maintain the desired speed. Furthermore, vacuum leaks in the engine can hinder the system's performance, as they affect the ability to maintain a constant speed. It's also important to inspect the brake light switch, as a faulty switch may cause the cruise control to disengage unexpectedly when the brakes are applied. Lastly, problems with the throttle cable can interfere with the cruise control's speed adjustments. By systematically addressing these potential issues, you can effectively diagnose and resolve cruise control problems in your Acura TSX.

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

When it comes to a non-functioning cruise control in a 2009 Acura TSX, the urgency of addressing the issue cannot be overstated. While it may not seem like an immediate emergency, neglecting this problem can lead to significant safety risks on the road. A malfunctioning cruise control system can cause erratic speed changes, making it difficult for drivers to maintain control, especially during long drives or on highways where consistent speed is crucial. Additionally, the longer the issue persists, the more likely it is to lead to further complications or damage within the vehicle's systems. Therefore, it is advisable to have the cruise control inspected and repaired by a qualified mechanic as soon as possible. This proactive approach not only enhances the safety of your driving experience but also ensures that your vehicle operates efficiently, allowing you to enjoy the convenience that cruise control offers without the worry of unexpected speed fluctuations.

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