2000 Saturn LW1 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2000 Saturn LW1 and How to Fix Them

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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 2000 Saturn LW1 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 2000 Saturn LW1 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.

What are the initial steps to diagnose the non-functioning cruise control in a 2000 Saturn LW1?

To effectively diagnose the non-functioning cruise control in your 2000 Saturn LW1, begin with the simplest checks before moving on to more complex diagnostics. Start by inspecting the fuse associated with the cruise control system, as a blown fuse is a common and easily fixable issue. Next, examine the cruise control switch to ensure it is operational; a malfunctioning switch can prevent the system from engaging. Additionally, check the brake pedal switch, which is designed to disengage the cruise control when the brake is applied; if this switch is faulty, it may be the reason your cruise control isn't working. The vehicle speed sensor is another critical component to assess, as it provides necessary data for the cruise control to function correctly. Finally, if these initial checks do not resolve the issue, consider using a diagnostic scanner to identify any error codes that may point to deeper problems within the system. By following this structured approach, you can systematically troubleshoot and potentially resolve the cruise control issue in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2000 Saturn LW1?

When troubleshooting the cruise control system in a 2000 Saturn LW1, it's essential to understand the common problems that could lead to its failure. One frequent issue is the vacuum actuator, which can malfunction or suffer damage to its hoses, preventing the system from functioning correctly. Additionally, a broken cable that connects the actuator to the throttle can disrupt the operation of the cruise control. Electrical problems are another potential culprit, ranging from a blown fuse to more complex issues involving defective switches or sensors, which may also trigger the "check engine" light. Furthermore, the cruise control system relies on monitoring the voltage to the brake light bulbs; if this voltage is not near zero, it can interfere with the cruise control's ability to engage. For a thorough diagnosis and repair, consulting a professional mechanic is recommended, as they can accurately identify the specific issue affecting your vehicle's cruise control system.

How urgent is it to repair the non-functioning cruise control in a 2000 Saturn LW1?

When evaluating the urgency of repairing the non-functioning cruise control in a 2000 Saturn LW1, it is essential to recognize the significant safety and convenience implications. A malfunctioning cruise control system can lead to increased driver fatigue, as maintaining a consistent speed manually requires constant attention and effort, which can be particularly taxing on long journeys. This distraction not only diminishes the comfort of driving but also raises the risk of accidents due to lapses in concentration. Furthermore, while the initial cost of repair may seem daunting, it is crucial to consider the long-term benefits of restoring this feature. Delaying repairs could exacerbate the issue, potentially leading to more extensive and costly damage down the line. Therefore, prioritizing the repair of the cruise control system is not just about convenience; it is a vital step towards ensuring a safer driving experience.

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