2004 Volvo S80 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2004 Volvo S80 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
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2004 Volvo S80 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 2004 Volvo S80 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 are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 2004 Volvo S80?

When troubleshooting the non-functional cruise control in a 2004 Volvo S80, it's essential to adopt a systematic diagnostic approach. Begin by checking the clutch position sensor, especially if your vehicle has a manual transmission. Start the car in neutral with the clutch pedal depressed and attempt to engage the cruise control; if the "cruise" indicator lights up and then turns off when you release the pedal, the sensor may be faulty. Next, inspect the brake pedal position sensor by ensuring that the brake lights illuminate when the pedal is pressed; malfunctioning brake lights can disrupt cruise control functionality. Utilizing a code reader to check for fault codes can provide valuable insights into any underlying issues affecting the system. Additionally, examine the cruise control switch located at the brake pedal to confirm it is securely mounted and operational. Don't forget to check the relevant fuses, particularly fuse number 23, which is typically found on the side of the dash. Lastly, consider cleaning the Electronic Throttle Module (ETM), as a buildup of dirt can interfere with cruise control performance. By following these steps, you can effectively diagnose and potentially resolve the issues with your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2004 Volvo S80?

When troubleshooting cruise control issues in a 2004 Volvo S80, it's essential to understand the common problems that may arise. One frequent culprit is the clutch position sensor, particularly in manual transmission models. If the cruise control light activates but turns off when the clutch pedal is released, this sensor may need replacement. Another potential issue is the brake pedal position sensor, which monitors the brake's status; a malfunction here can lead to erratic cruise control behavior. Additionally, the cruise control module itself could be at fault, often due to faulty switches or electrical connection problems. Checking related fuses, especially fuse number 23, can help diagnose electrical issues. A dirty Electronic Throttle Module (ETM) can also disrupt cruise control functionality, and cleaning it may resolve the problem. Lastly, if there are any fault codes present, they should be addressed, as they provide valuable insights into the underlying issues. By systematically examining these components, you can effectively identify and potentially fix the cruise control problems in your Volvo S80.

How urgent is it to address the non-functioning cruise control in a 2004 Volvo S80?

When considering the urgency of addressing a non-functioning cruise control in a 2004 Volvo S80, it's essential to recognize that while it may not seem critical at first glance, the implications can be significant. The cruise control system is often linked to other vital safety features, such as traction control and braking systems. A malfunction could indicate underlying issues that might compromise your vehicle's safety. Additionally, if your vehicle's diagnostic system is generating codes related to the cruise control, these could point to problems with components like the brake pedal position sensor or ABS sensors, which are crucial for safe operation. Ignoring these warnings can lead to more severe and costly repairs down the line. Furthermore, since modern vehicles integrate cruise control with advanced driver assistance systems, a failure in this area could signal a more complex issue that requires immediate attention. Therefore, while it may not be an emergency, addressing the non-functioning cruise control promptly is advisable to maintain the overall safety and reliability of your Volvo S80.

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