2008 Acura RDX Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2008 Acura RDX and How to Fix Them

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Reviewed by
Bo Fader
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 2008 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 2008 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 2008 Acura RDX?

To diagnose a cruise control issue in a 2008 Acura RDX, start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the cruise control fuse to ensure it is intact, as a blown fuse can easily disrupt the system. Next, inspect the cruise control buttons on the steering wheel for any signs of damage or sticking, as these can prevent proper engagement. Once these initial checks are complete, test the cruise control while driving to see if it activates and maintains speed; if it fails to engage, this indicates a deeper issue. Utilizing an OBD-II scanner can help identify any error codes that may provide insight into the malfunction. Additionally, examine the cruise control module for any visible damage or loose connections, as well as the vehicle speed sensor, which is crucial for the system's operation. 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 resolve cruise control problems in your Acura RDX.

What are the common problems that could cause the cruise control to stop working in a 2008 Acura RDX?

When dealing with a non-functional cruise control system in a 2008 Acura RDX, it's essential to understand the common problems that could be at play. One of the primary culprits is a faulty cruise control switch, which can hinder the system's ability to engage or disengage as intended. Additionally, a blown fuse within the cruise control circuit can disrupt its operation, making it crucial to check the vehicle's fuse box for any damaged fuses. Another potential issue is a defective speed sensor, which is vital for maintaining the set speed; if this sensor fails, the cruise control may not function correctly. Vacuum leaks in the engine can also affect the cruise control system, as they can lead to inconsistent performance. Furthermore, problems with the brake light switch can prevent the cruise control from activating, since the system is designed to deactivate when the brake pedal is pressed. Lastly, a malfunctioning throttle cable can interfere with the cruise control's ability to adjust speed accurately. By understanding these common issues, DIYers can better diagnose and address the problems affecting their vehicle's cruise control system.

How urgent is it to address the non-functioning cruise control in a 2008 Acura RDX?

Addressing the non-functioning cruise control in your 2008 Acura RDX is not just a matter of convenience; it is a critical safety concern that should be prioritized. A malfunctioning cruise control system can lead to dangerous situations, such as the inability to cancel the cruise control when necessary, which could result in loss of vehicle control. Common issues like blown fuses, faulty switches, or a stuck brake pedal can prevent the system from engaging properly, making it essential to diagnose and resolve these problems swiftly. Ignoring these symptoms can lead to further complications, including potential damage to other vehicle systems or increased repair costs down the line. Therefore, it is crucial to take immediate action to ensure your safety and maintain the functionality of your vehicle, allowing for a more comfortable and secure driving experience.

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