2009 Acura RDX Cruise Control Isn't Working

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

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Reviewed by
Devin Cabugcal
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 RDX 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 RDX 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.

What are the steps to diagnose the cruise control issue in a 2009 Acura RDX?

To diagnose a cruise control issue in a 2009 Acura RDX, begin with the simplest checks to avoid unnecessary complications. Start by inspecting the cruise control fuse, as a blown fuse can easily disrupt the system's functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent activation. Utilizing an OBD-II scanner to scan for error codes is a crucial step, as it can reveal specific problems that may not be immediately visible. Following this, check the speed sensors, which are vital for the cruise control system's operation, ensuring they are functioning correctly. The brake pedal switch also plays a significant role; testing it will confirm whether it is working as intended. Additionally, inspect the vacuum lines for any leaks or damage, as these can significantly impact the system's performance. If these steps do not resolve the issue, it may be time to consult a professional mechanic for further assistance. By following this structured approach, you can effectively diagnose and potentially fix the cruise control issue in your Acura RDX.

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

When troubleshooting cruise control issues in a 2009 Acura RDX, it's essential to consider several common problems that could be at play. One of the first areas to check is the cruise control switch, as a malfunction here can prevent the system from engaging or disengaging properly. Additionally, inspect the fuses related to the cruise control system; a blown fuse can disrupt functionality entirely. The speed sensor is another critical component; if it’s malfunctioning, the cruise control may struggle to maintain a consistent speed. Furthermore, vacuum leaks in the engine can significantly impact the performance of the cruise control system, leading to erratic behavior. Lastly, the brake light switch should be examined, as a faulty switch can cause the cruise control to disengage unexpectedly when the brakes are applied. By systematically checking these components, DIYers can often identify and resolve the underlying issues affecting their vehicle's cruise control system.

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

When it comes to the non-functioning cruise control in a 2009 Acura RDX, understanding the urgency of the situation is crucial for any DIY enthusiast. While a malfunctioning cruise control may not present an immediate safety hazard like failing brakes or steering, it can signal deeper issues within the vehicle's electronic systems. Ignoring this problem could lead to more significant complications, potentially affecting other critical components and compromising overall vehicle safety. Moreover, a properly functioning cruise control system enhances driving comfort and fuel efficiency, making it an important feature for long trips. Therefore, it is advisable to inspect and address the cruise control issue promptly, either through DIY troubleshooting or by consulting a qualified mechanic. This proactive approach not only ensures the reliability of your vehicle but also helps prevent further damage and costly repairs down the line.

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