2003 Acura NSX Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2003 Acura NSX

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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 2003 Acura NSX 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.

What are the steps to diagnose the cruise control issue in a 2003 Acura NSX?

To effectively diagnose a cruise control issue in a 2003 Acura NSX, begin with the simplest solutions before progressing to more intricate assessments. Start by checking the cruise control fuse in the fuse box, as a blown fuse can often be the root of the problem. Next, inspect the cruise control buttons on the steering wheel to ensure they are functioning correctly, as faulty buttons can prevent the system from engaging. If these initial checks do not resolve the issue, examine the cruise control module for any signs of damage or corrosion that could impair its operation. Testing the cruise control actuator is also crucial, as it is responsible for maintaining speed; ensure it engages and disengages properly. Additionally, using a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues. Finally, inspect the vacuum lines for leaks or damage, as these can significantly affect the cruise control system's performance. By following this structured approach, you can systematically identify and address the cruise control issue in your Acura NSX.

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

When troubleshooting cruise control issues in a 2003 Acura NSX, 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 hinder the system's ability to engage or disengage properly. Additionally, a blown fuse within the cruise control circuit can disrupt functionality, rendering the system inoperative. Another critical component to examine is the speed sensor; if it malfunctions, the cruise control may struggle to maintain a consistent speed. Vacuum leaks can also pose significant challenges, as they can impair the system's performance. Furthermore, issues with the brake light switch can prevent the cruise control from activating or disengaging as intended. Lastly, a malfunctioning throttle cable can interfere with the overall operation of the cruise control system. By systematically checking these components, DIYers can effectively diagnose and resolve cruise control failures in their Acura NSX.

How urgent is it to repair the non-functioning cruise control on a 2003 Acura NSX?

While the non-functioning cruise control on a 2003 Acura NSX does not present an immediate safety hazard, it is still important to consider the implications of delaying repairs. The cruise control system enhances driving comfort, especially during long trips, by allowing the driver to maintain a consistent speed without constant pedal input. Neglecting this issue can lead to increased fatigue and discomfort on extended journeys. Furthermore, if the cruise control malfunction is indicative of a larger electrical problem, it could potentially affect other critical systems in the vehicle, leading to more significant issues down the line. Therefore, while the urgency may not be critical from a safety perspective, addressing the cruise control problem promptly is advisable to ensure optimal vehicle performance and maintain a comfortable driving experience.

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