2021 Acura ILX Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2021 Acura ILX

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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 2021 Acura ILX 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 2021 Acura ILX 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.

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 2021 Acura ILX?

When diagnosing a cruise control issue in a 2021 Acura ILX, it's crucial to follow a methodical diagnostic approach that prioritizes simpler checks before delving into more complex solutions. Begin by inspecting the cruise control fuse, as a blown fuse can easily disrupt the system's operation. Next, check the functionality of the cruise control buttons on the steering wheel; any sticking or damage here can prevent the system from engaging properly. After that, examine the speed sensors, which are vital for the cruise control's performance, as any malfunction can lead to operational issues. Utilizing an OBD-II scanner to retrieve error codes can also provide critical insights into potential problems within the system. If these preliminary steps do not yield results, proceed to test the cruise control module to ensure it is transmitting the correct signals. Additionally, inspect the wiring and connections for any signs of wear or loose connections that could be causing the malfunction. Should the issue remain unresolved after these checks, consulting a professional mechanic with expertise in Acura vehicles is advisable for a comprehensive diagnosis and repair. By adhering to this structured approach, you can effectively troubleshoot and resolve cruise control issues in your Acura ILX.

What are the common problems that could cause the cruise control to stop working in a 2021 Acura ILX?

When dealing with cruise control issues in a 2021 Acura ILX, it's essential to understand the common problems that may arise. One frequent culprit is a faulty brake light switch, which can prevent the cruise control from engaging since it is designed to deactivate when the brake pedal is pressed. Additionally, speed sensor issues can lead to inaccurate readings, causing the system to malfunction or disengage unexpectedly. A blown fuse in the cruise control circuit can also result in a complete failure of the feature. Furthermore, if the throttle actuator is malfunctioning, it may struggle to maintain the desired speed effectively. Lastly, problems with the Electronic Control Module (ECM), which oversees various vehicle functions including cruise control, can lead to operational issues. If you experience any of these problems, it is advisable to consult a qualified mechanic for a thorough inspection and diagnosis to ensure your cruise control system is functioning correctly.

How urgent is it to address the malfunctioning cruise control in my 2021 Acura ILX?

When it comes to your 2021 Acura ILX, addressing a malfunctioning cruise control system is not just a matter of convenience; it is a critical safety concern that requires immediate attention. A malfunction can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses a significant risk while driving, particularly in high-speed situations like highways. The potential for loss of control over your vehicle's speed can increase the likelihood of accidents, making it essential to rectify the issue as soon as possible. Moreover, neglecting this problem can compromise your vehicle's overall performance and efficiency, leading to a less enjoyable driving experience. Additionally, ignoring the symptoms of a malfunctioning cruise control could result in further damage to other vehicle components, ultimately leading to more extensive and costly repairs down the line. Therefore, it is crucial to prioritize the repair of your cruise control system to ensure your safety, maintain optimal vehicle performance, and prevent future complications.

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2021 Acura ILX Cruise Control Issues & Solutions | RepairPal