2011 Saab 9-5 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2011 Saab 9-5 and How to Fix Them

Find Repair Location
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 2011 Saab 9-5 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 2011 Saab 9-5 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 troubleshoot the non-functional cruise control in a 2011 Saab 9-5?

When troubleshooting the non-functional cruise control in a 2011 Saab 9-5, it's essential to adopt a methodical diagnostic approach. Begin by checking the fuse associated with the cruise control system, as a blown fuse can often be the simplest issue to resolve. Next, inspect the wiring for any signs of damage, loose connections, or corrosion that could disrupt the system's functionality. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying electronic issues. Additionally, test the cruise control buttons on the steering wheel to ensure they are operational. Don't overlook the vacuum lines; inspect them for leaks or damage, as these can significantly impact the cruise control's performance. Finally, verify that the vehicle's speed sensor is functioning correctly, as it is crucial for the cruise control system to operate effectively. Consulting the vehicle's service manual can also offer specific troubleshooting steps and diagrams that may assist in identifying the problem. By following these steps, you can systematically diagnose and potentially resolve the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2011 Saab 9-5?

When the cruise control in a 2011 Saab 9-5 ceases to function, several common problems may be at play. One of the primary culprits is a faulty brake pedal switch, which is crucial for disengaging the cruise control when the brake is applied. If this switch malfunctions, it can prevent the system from engaging properly. Additionally, issues with the speed sensor can disrupt the cruise control's ability to maintain a constant speed, leading to operational failures. Another potential issue is vacuum leaks within the system, which can significantly impair the cruise control's functionality. Furthermore, a defective cruise control module may also be responsible for the system's inability to operate as intended. Lastly, electrical problems, such as blown fuses or wiring issues, can hinder the cruise control's performance. By systematically checking these components, DIYers can effectively troubleshoot and resolve cruise control issues in their Saab 9-5.

How urgent is it to address the malfunctioning cruise control in a 2011 Saab 9-5?

Addressing a malfunctioning cruise control in a 2011 Saab 9-5 is crucial for maintaining both safety and vehicle performance. While it may not seem like an immediate emergency, the risks associated with a faulty cruise control system can escalate quickly. A malfunction can lead to unexpected acceleration or deceleration, which poses a significant safety hazard on the road. Additionally, neglecting this issue can adversely affect your driving experience, making it less convenient and enjoyable. Furthermore, unresolved cruise control problems can lead to increased fuel consumption and may even cause damage to other vehicle components over time. By addressing the malfunction promptly, you not only enhance your safety but also prevent further damage and costly repairs down the line. Therefore, it is advisable to take action sooner rather than later to ensure your Saab 9-5 remains reliable and safe for your journeys.

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.

2011 Saab 9-5 Cruise Control Issues & Repairs | RepairPal