2003 Acura RSX Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2003 Acura RSX 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 2003 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 2003 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 cruise control issue in a 2003 Acura RSX?

When diagnosing a cruise control issue in a 2003 Acura RSX, it's crucial to follow a methodical approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the cruise control fuse, as a blown fuse can easily disrupt the system's operation. Next, assess the functionality of the cruise control buttons on the steering wheel, ensuring they are not stuck or damaged, which could hinder engagement. It's also important to examine the vehicle's speed sensors, as they play a vital role in the cruise control system's performance. Utilizing an OBD-II scanner can help identify any error codes that may indicate underlying problems. If these preliminary checks do not yield results, proceed to test the cruise control module to verify it is sending the correct signals. Additionally, inspect the vacuum lines for leaks and check the wiring connections for any signs of damage or looseness. Should the issue remain unresolved after these steps, seeking assistance from a professional mechanic is advisable for a comprehensive diagnosis and repair. By adhering to this structured diagnostic process, you can effectively troubleshoot and potentially resolve cruise control issues in your Acura RSX.

What are the common problems that could cause the cruise control to stop working in a 2003 Acura RSX?

When troubleshooting the cruise control system in a 2003 Acura RSX, 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 correctly. Additionally, a blown fuse may be the culprit, so inspecting and replacing any faulty fuses can often resolve the issue. The speed sensor is another critical component; if it's defective, the cruise control may struggle to maintain a set speed. Furthermore, vacuum leaks in the engine can disrupt the necessary vacuum pressure for the cruise control to function properly. It's also important to examine the brake light switch, as any issues here can prevent the cruise control from activating, given that it is designed to deactivate when the brake pedal is pressed. Lastly, a malfunctioning throttle cable, whether due to fraying or stretching, can hinder the cruise control's ability to maintain a constant speed. By systematically checking these components, you can effectively diagnose and potentially fix the cruise control issues in your Acura RSX.

How urgent is it to address the non-functioning cruise control in a 2003 Acura RSX?

When considering the urgency of fixing a non-functioning cruise control in a 2003 Acura RSX, it is crucial to recognize the potential safety risks involved. A malfunctioning cruise control system can compromise your ability to maintain a steady speed, particularly during long drives or highway travel, where this feature is most beneficial. This not only increases the risk of accidents but can also lead to driver fatigue, as constant acceleration becomes necessary. Additionally, delaying repairs may result in more complex issues that could escalate repair costs, making it essential to diagnose the problem early. Furthermore, maintaining all vehicle features in working order is vital for preserving resale value; potential buyers are more likely to be attracted to a well-maintained vehicle. Therefore, while it may not seem like an immediate emergency, addressing the non-functioning cruise control promptly is advisable to ensure safety, enhance driving comfort, and protect the vehicle's overall condition.

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2003 Acura RSX Cruise Control Issues & Repairs | RepairPal