2019 Cadillac CTS Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2019 Cadillac CTS and How to Fix Them

Find Repair Location
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 Cadillac CTS 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 Cadillac CTS 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 steps should I take to diagnose the non-functioning cruise control in my 2019 Cadillac CTS?

To effectively diagnose the non-functioning cruise control in your 2019 Cadillac CTS, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue. Next, examine the cruise control buttons on your steering wheel for any signs of damage or sticking, as these can hinder the system's operation. Following this, verify the functionality of the speed sensors, which play a crucial role in the cruise control system; faulty sensors can disrupt its performance. Utilizing an OBD-II scanner to check for error codes can provide valuable insights into any underlying issues. Additionally, ensure that the brake and clutch switches are functioning correctly, as these components are essential for activating the cruise control. Finally, inspect the wiring and connections associated with the cruise control system for any damage or corrosion that could be causing the malfunction. By following this structured diagnostic approach, you can efficiently identify and address the root cause of your cruise control issues.

What are the common problems that could cause the cruise control to stop working in a 2019 Cadillac CTS?

When troubleshooting the cruise control system in a 2019 Cadillac CTS, it's essential to understand the common problems that may lead to its failure. One of the primary culprits is faulty speed sensors, which can disrupt the system's ability to accurately gauge the vehicle's speed, resulting in malfunction. Additionally, issues with the brake light switch can cause the cruise control to disengage unexpectedly, particularly when the brake pedal is pressed. Another potential problem is a defective cruise control module, which may prevent the system from engaging or maintaining the desired speed. It's also important to check for a blown fuse, as this can completely disable the cruise control functionality. Lastly, a malfunction in the throttle control system, such as a faulty throttle position sensor, can hinder the cruise control's performance. By identifying and addressing these common issues, you can effectively diagnose and resolve problems with the cruise control system in your Cadillac CTS.

How urgent is it to address the malfunctioning cruise control in a 2019 Cadillac CTS?

Addressing a malfunctioning cruise control in a 2019 Cadillac CTS is of utmost importance due to the potential safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can be dangerous while driving. Moreover, issues with the cruise control may signal deeper electronic system problems that could affect other critical vehicle functions, making it essential to investigate the root cause promptly. Neglecting these symptoms not only compromises safety but can also lead to decreased fuel efficiency and increased wear on the vehicle, resulting in costly repairs down the line. Therefore, it is crucial for DIY enthusiasts to prioritize fixing cruise control issues to ensure both the safety and longevity of their Cadillac CTS.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.