Buick Regal Sportback Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Buick Regal Sportback 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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 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 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.

Troubleshooting Cruise Control Issues in a Buick Regal Sportback

When faced with cruise control issues in your Buick Regal Sportback, it's essential to adopt a systematic diagnostic approach. Start by checking the simplest potential problems, such as the fuse associated with the cruise control system. If the fuse is intact, proceed to inspect the brake pedal switch, which is crucial for the cruise control's operation; a faulty switch can easily disrupt functionality. Next, examine the control module, sensor, and switch for any signs of wear or malfunction, as these components are often the culprits behind cruise control failures. Additionally, consider throttle actuation issues, as they can also impede the system's performance. By following this methodical process, you can efficiently identify and resolve the underlying issues, restoring your vehicle's cruise control and enhancing your driving experience.

What Could Cause the Cruise Control to Malfunction in a Buick Regal Sportback?

When dealing with a malfunctioning cruise control system in a Buick Regal Sportback, it's essential to understand the various common problems that could be at fault. One of the primary culprits is often a failed control module, which can disrupt the entire system's functionality. Additionally, issues with sensors or switches may prevent the cruise control from engaging properly. Throttle actuation problems are another frequent cause, as they can hinder the system's ability to maintain speed. It's also wise to check for a blown fuse or a defective brake pedal switch, as these components play a crucial role in the cruise control operation. In some cases, the throttle control system or the ABS may be implicated in the malfunction. For older models, a broken vacuum line could be the issue, while a damaged cruise control button, often caused by debris, can also prevent activation. By systematically examining these potential problems, DIYers can effectively diagnose and address the cruise control issues in their Buick Regal Sportback.

Why is the Cruise Control Not Working in a Buick Regal Sportback?

When the cruise control in your Buick Regal Sportback fails to operate, it’s crucial to address the issue promptly, as neglecting it could lead to safety risks while driving. Common culprits include a malfunctioning control module, faulty sensors, or issues with the switches that manage the cruise control system. Additionally, problems with throttle actuation or a defective servo can hinder its functionality. It’s also important to inspect the brake pedal switch, as an out-of-adjustment switch can inadvertently disable cruise control. Furthermore, issues with the speed sensor, the main on/off switch located on the steering column, or even a blown fuse can contribute to the malfunction. In older models, complications with the throttle control system, ABS, or vacuum lines may also be at play. By diagnosing these potential issues early, you can ensure your vehicle remains safe to drive and avoid more significant repairs down the line.

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