2019 Buick Regal Sportback Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2019 Buick Regal Sportback

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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 2019 Buick Regal Sportback 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 2019 Buick Regal Sportback 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 steps should I take to diagnose the cruise control issue in my 2019 Buick Regal Sportback?

To effectively diagnose the cruise control issue in your 2019 Buick Regal Sportback, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are operational, since faulty buttons can lead to engagement problems. Utilizing an OBD-II scanner is a crucial step; it allows you to identify any error codes that may indicate specific malfunctions within the cruise control system. Following this, check the speed sensors, as they are vital for maintaining the desired speed; any faults here can significantly impact performance. Additionally, inspect the brake and clutch switches, since issues with these components can prevent the cruise control from engaging or disengaging correctly. Finally, test the cruise control module to confirm it is sending the appropriate signals to the vehicle's systems. By following this structured diagnostic approach, you can efficiently identify and address the root cause of the cruise control issue, ensuring a thorough and effective troubleshooting process.

What are the common problems that could cause the cruise control to stop working in a 2019 Buick Regal Sportback?

When the cruise control in your 2019 Buick Regal Sportback ceases to function, it’s essential to consider several potential issues that could be at play. One of the most frequent culprits is faulty speed sensors, which are crucial for the system to maintain the desired speed accurately. If these sensors are malfunctioning, the cruise control may not engage or could disengage unexpectedly. Another common issue is a malfunctioning brake light switch; since the cruise control is designed to deactivate when the brake pedal is pressed, any failure in this switch can lead to the system being inoperable. Additionally, a blown fuse can disrupt the electrical flow necessary for the cruise control to function, making it a straightforward fix to check. Problems with the throttle actuator control system can also hinder the cruise control's ability to maintain speed, as this system directly influences the throttle response. Lastly, issues with the electronic control module (ECM) can interfere with communication between the cruise control and the vehicle's engine, leading to further complications. By understanding these common problems, you can take the necessary steps to diagnose and potentially resolve the cruise control issues in your vehicle.

How urgent is it to address the malfunctioning cruise control in my 2019 Buick Regal Sportback?

When it comes to the malfunctioning cruise control in your 2019 Buick Regal Sportback, the urgency of addressing the issue cannot be overstated. A faulty cruise control system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which significantly increases the risk of accidents on the road. Ignoring these symptoms not only jeopardizes your safety but also that of other drivers and passengers. Moreover, delaying repairs can exacerbate the problem, potentially leading to more extensive and costly damage to your vehicle's systems. Therefore, it is crucial to have the cruise control inspected and repaired by a qualified mechanic as soon as possible. Taking prompt action not only ensures your safety but also helps maintain the integrity of your vehicle, preventing further complications down the line.

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2019 Buick Regal Sportback Cruise Control Issues & Solutions