Saab 9-7x Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Saab 9-7x and How to Fix Them

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Reviewed by
Bo Fader
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 Saab 9-7x 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 Saab 9-7x 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.

Troubleshooting Cruise Control Issues in a Saab 9-7x

When troubleshooting cruise control issues in your Saab 9-7x, it's essential to adopt a systematic diagnostic approach that begins with the simplest checks before progressing to more complex components. Start by examining the control module, throttle, and associated sensors, as these are often the culprits behind malfunctioning cruise control. Next, inspect the throttle body; a non-responsive throttle can indicate a need for resetting or further investigation. Pay close attention to the pedal switches, as any disconnection when pressing the brake or clutch could signal a fault in the switch or its wiring. Additionally, check the pedal sensors, particularly the clutch sensor, for any signs of damage or disconnection. Once you've assessed these components, you can confidently attempt to set the cruise control by ensuring the rocker switch is in the central position and activating it at your desired speed. By following this structured approach, you can effectively diagnose and potentially resolve cruise control issues in your Saab 9-7x, making your DIY experience both productive and rewarding.

What Are the Common Causes of Cruise Control Malfunction in a Saab 9-7x?

When troubleshooting cruise control malfunctions in a Saab 9-7x, it's essential to understand the various common problems that may arise. One frequent culprit is a failed control module, sensor, or switch, which can disrupt the system's functionality. Additionally, throttle actuation issues can prevent the cruise control from engaging properly, while a faulty throttle position sensor may lead to overcompensation in fuel delivery, often resulting in black exhaust emissions. For those experiencing intermittent cruise control problems, resoldering the control unit can be an effective DIY fix. It's also crucial to inspect the pedal sensors, particularly the clutch sensor, as malfunctions here can significantly impact the cruise control's operation. By considering these factors, DIYers can effectively diagnose and address cruise control issues, ensuring a safer and more reliable driving experience.

Why is the Cruise Control Not Working in a Saab 9-7x?

When the cruise control in your Saab 9-7x fails to operate, it’s crucial to address the issue without delay. Ignoring symptoms such as unresponsive controls or erratic behavior can lead to more significant safety risks while driving, as cruise control is designed to maintain a steady speed, allowing for safer long-distance travel. Common culprits like a malfunctioning control module, faulty throttle position sensor, or issues with the brake and clutch pedal switches can not only hinder the cruise control's functionality but may also indicate underlying problems that could affect overall vehicle performance. For instance, a malfunctioning throttle body can lead to improper fuel management, resulting in poor engine performance and increased emissions. Therefore, it’s essential to troubleshoot these issues promptly, as neglecting them could lead to costly repairs or even dangerous driving conditions. By taking the time to diagnose and resolve cruise control malfunctions, you ensure a safer driving experience and maintain the integrity of your vehicle.

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