2020 Acura RLX Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2020 Acura RLX

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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 2020 Acura RLX 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 2020 Acura RLX 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.

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 initial diagnostic steps to take when the cruise control isn't working on a 2020 Acura RLX?

When faced with a malfunctioning cruise control system in your 2020 Acura RLX, it's essential to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse located in the fuse box, as a blown fuse can often be the simplest explanation for the issue. Next, inspect the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent proper engagement. The vehicle speed sensor is another critical component; verify its functionality since it directly impacts cruise control operation. Additionally, examine the brake pedal switch, as a faulty switch can inadvertently disable the cruise control system. Utilizing an OBD-II scanner to check for error codes can provide further insights into any underlying issues. Don't overlook the cruise control module itself; inspect it for visible damage or malfunction. Finally, ensure that all wiring and connections related to the cruise control system are secure and free from corrosion or fraying. By following these steps, you can effectively diagnose and address the cruise control problem, restoring functionality to your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2020 Acura RLX?

When the cruise control in your 2020 Acura RLX ceases to function, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. One of the primary culprits is a faulty speed sensor, which is crucial for the cruise control system to accurately gauge your vehicle's speed. If this sensor malfunctions, the system may fail to engage or maintain the desired speed. Another frequent issue arises from the brake light switch; if this switch is defective, it can inadvertently signal the cruise control to disengage whenever the brake pedal is pressed. Additionally, a blown fuse can disrupt the electrical flow to the cruise control system, rendering it inoperable. It's also important to consider the throttle control system; a malfunctioning throttle position sensor can hinder the cruise control's ability to maintain speed. Lastly, electrical problems such as damaged or loose wiring can interfere with the system's operation. By identifying and addressing these common issues, you can restore the functionality of your cruise control and enhance your driving experience.

How urgent is it to address the malfunctioning cruise control in a 2020 Acura RLX?

Addressing a malfunctioning cruise control system in your 2020 Acura RLX is crucial for maintaining both safety and vehicle performance. A malfunction can lead to unexpected acceleration or deceleration, creating a significant safety hazard on the road. Moreover, cruise control issues can detract from the overall driving experience, particularly during long-distance travel where consistent speed is essential for comfort and efficiency. Ignoring these symptoms may also result in increased fuel consumption, as the vehicle struggles to maintain a steady pace. Additionally, timely intervention can prevent further damage to the vehicle's systems, ultimately saving you from more costly repairs down the line. Therefore, it is advisable to prioritize the resolution of cruise control problems to ensure a safe and efficient driving experience.

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2020 Acura RLX Cruise Control Issues & Repairs | RepairPal