2005 Acura RSX Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2005 Acura RSX 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
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2005 Acura RSX 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 2005 Acura RSX 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 vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

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.

If the cruise control refuses to turn on at all, the actuator could be at fault. Likewise, if the cruise control stays on but does not maintain a consistent speed, the problem could be a bad actuator. In extreme cases, a malfunctioning actuator could cause the throttle to stick and prevent the vehicle from slowing down. These symptoms may point to a bad actuator. They may also point to other problems with the cruise control and related systems.

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 2005 Acura RSX?

To effectively diagnose the non-functioning cruise control in a 2005 Acura RSX, it's essential to adopt a systematic approach that begins with the simplest potential issues before progressing to more complex diagnostics. Start by checking the fuse associated with the cruise control system, as a blown fuse is a common and easily fixable problem. Next, inspect the cruise control switch to ensure it is operational; a malfunctioning switch can prevent the system from engaging. Following this, examine the brake pedal switch, which is critical for the cruise control's functionality; if this switch is faulty, it will disable the system. Additionally, assess the speed sensor, as any malfunction here can disrupt the cruise control's operation. It's also important to check for vacuum leaks in the cruise control system, as these can significantly impact performance. Finally, using a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues. By following this structured diagnostic approach, you can efficiently identify and resolve the problems affecting your Acura RSX's cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2005 Acura RSX?

When the cruise control in a 2005 Acura RSX ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the primary culprits is a faulty cruise control switch, which may prevent the system from engaging or disengaging as intended. Additionally, a blown fuse can disrupt the electrical flow necessary for the cruise control to operate, making it a straightforward fix if you check the fuse box. Another potential issue is vacuum leaks within the cruise control system; these leaks can hinder the system's ability to maintain speed. Furthermore, a defective speed sensor can lead to incorrect speed readings, causing the cruise control to malfunction. It's also essential to consider the brake light switch, as a malfunction here can prevent the cruise control from engaging, given that it is designed to deactivate when the brake pedal is pressed. Lastly, inspect the throttle cable for any signs of wear or damage, as issues with this component can affect the system's performance. By systematically checking these areas, you can identify and address the root cause of your cruise control problems, restoring functionality to your vehicle.

How urgent is it to address the non-functioning cruise control in a 2005 Acura RSX?

When it comes to the non-functioning cruise control in your 2005 Acura RSX, understanding the urgency of the repair is crucial for maintaining both convenience and vehicle performance. While the absence of cruise control may not present an immediate safety hazard, it can lead to increased driver fatigue during long trips, as you will need to manually control your speed. Moreover, neglecting this issue could potentially lead to more significant problems down the line, such as electrical system failures or complications with other vehicle components that rely on the cruise control system. 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 your driving experience but also helps preserve the overall value and functionality of your vehicle, ensuring that you can enjoy the benefits of this convenient feature when you need it most.

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