Saturn LW200 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Saturn LW200 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 Saturn LW200 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 Saturn LW200 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 throttle position sensor fails, the engine's computer tends to overcompensate with fuel, leading black exhaust coming from the tailpipe. There is a strong possibility of engine misfires, and the check engine light will come on.

Throttle position sensors can also develop "dead spots," or certain places along the throttle curve where it doesn't get a reading. When this happens, the above symptoms can occur but then stop when you further press or let off the gas pedal.

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.

A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.

Troubleshooting Cruise Control Issues in a Saturn LW200

When troubleshooting cruise control issues in your Saturn LW200, begin with the simplest potential problems before delving into more complex diagnostics. Start by checking the fuse associated with the cruise control system, as a blown fuse can easily disrupt functionality. Next, inspect the brake lights; if they are not functioning correctly, it may indicate a faulty brake switch, which can prevent the cruise control from engaging. Additionally, ensure that the throttle is operating smoothly, as any actuation problems can hinder cruise control performance. If these initial checks do not resolve the issue, consider examining the control module and associated sensors, as these components are often the source of more intricate problems. Lastly, be mindful of any warning lights on your dashboard, such as the check engine light, as they can signal underlying engine issues that may affect cruise control operation. By following this diagnostic approach, you can effectively identify and address the root cause of your cruise control problems.

Troubleshooting Cruise Control Issues in a Saturn LW200

When troubleshooting cruise control issues in your Saturn LW200, it's essential to understand the common problems that could be affecting its functionality. One of the primary culprits is a failed control module, which can prevent the system from engaging properly. Additionally, sensor or switch malfunctions, particularly with the brake light switch, can disrupt the cruise control operation, as the system relies on these components to function safely. A blown fuse is another frequent issue that can lead to a complete failure of the cruise control system. If you notice that your cruise control suddenly stops working, it’s crucial to check these components first. Remember, even if the cruise control is activated, maintaining full attention while driving is vital for safety, as unexpected failures can lead to rapid deceleration. By systematically checking these areas, you can effectively diagnose and potentially resolve the cruise control issues in your Saturn LW200.

Why is the Cruise Control Not Working in a Saturn LW200?

When the cruise control in your Saturn LW200 is not functioning, it’s essential to address the issue promptly, as neglecting it can lead to safety risks and further complications. A faulty cruise control switch is often the culprit, and replacing it can restore functionality. Additionally, a blown fuse in the vehicle's fuse box may disrupt the system, so checking for any blown fuses is a crucial step in troubleshooting. The speed sensor, which monitors your vehicle's speed, is another critical component; if it malfunctions, the cruise control may fail to engage. Furthermore, vacuum leaks in the engine can interfere with the cruise control system, making it vital to inspect vacuum lines for any signs of leakage. Issues with the brake light switch can also prevent the cruise control from activating, as it signals when the brakes are applied. Lastly, if the Electronic Control Module (ECM) is malfunctioning, it can lead to broader issues affecting various vehicle functions, including cruise control. By investigating these potential causes and addressing them swiftly, you can ensure your vehicle remains safe and functional, preventing more significant problems down the line.

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Fixing Saturn LW200 Cruise Control Issues | RepairPal