2018 Acura TLX Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2018 Acura TLX 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 2018 Acura TLX 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 2018 Acura TLX 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 2018 Acura TLX?

To effectively diagnose a cruise control issue in your 2018 Acura TLX, begin with the simplest solutions. Start by checking the cruise control fuse, 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 properly and not stuck, as this can prevent the system from engaging. Following this, examine the speed sensors, which are vital for the cruise control system's operation; any malfunction here can disrupt functionality. Utilizing an OBD-II scanner to check for error codes can provide valuable insights into any underlying issues. If these initial checks do not resolve the problem, proceed to test the cruise control module to confirm it is sending the correct signals. Additionally, inspect the wiring and connections for any signs of damage or loose connections that could be affecting the system. If the issue persists after these steps, it may be time to consult a professional mechanic who specializes in Acura vehicles for a thorough diagnosis and repair. By following this structured approach, you can efficiently identify and address cruise control issues in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2018 Acura TLX?

When the cruise control in your 2018 Acura TLX stops functioning, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is a faulty brake pedal switch, which can disrupt the system's ability to engage or disengage properly. Additionally, issues with the speed sensor may lead to incorrect speed readings, causing the cruise control to malfunction. A blown fuse in the cruise control circuit can also prevent the system from operating, so checking the fuses is a good first step. Furthermore, if the throttle actuator is malfunctioning, it may struggle to maintain the desired speed, leading to erratic behavior. Lastly, any electrical problems, such as damaged wiring or a faulty control module, can significantly impact the cruise control's performance. By systematically checking these components, you can effectively troubleshoot and potentially resolve the issues with your vehicle's cruise control system.

How urgent is it to address the malfunctioning cruise control in a 2018 Acura TLX?

Addressing a malfunctioning cruise control in a 2018 Acura TLX is of utmost importance due to the inherent safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can significantly increase the likelihood of accidents on the road. Moreover, timely intervention not only ensures the vehicle's systems operate correctly but also maintains overall performance and safety. Ignoring these symptoms can lead to more severe issues down the line, resulting in costly repairs and further inconvenience. Additionally, a malfunctioning cruise control can detract from the comfort of long drives, making the driving experience less enjoyable. Therefore, it is crucial to prioritize the repair of the cruise control system to safeguard both the driver and passengers while ensuring a smooth and reliable driving experience.

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