Saturn LW1 Cruise Control Isn't Working

Troubleshooting Common Issues with the Cruise Control System in Your Saturn LW1 and How to Fix Them

Find Repair Location
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 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 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.

Troubleshooting Cruise Control Issues in a Saturn LW1

When troubleshooting cruise control issues in a Saturn LW1, it's essential to adopt a systematic diagnostic approach. Begin by checking the fuses associated with the cruise control system, as a blown fuse is a common and easily fixable problem that can disrupt functionality. Next, inspect the brake pedal and throttle body, as any malfunction in these components can directly affect cruise control operation. If these initial checks do not resolve the issue, utilize a diagnostic scanner to identify any error codes that may indicate deeper problems within the system. Pay particular attention to the speed sensor, as its proper functioning is crucial for cruise control to operate effectively. Additionally, consider common failure points such as a faulty brake light or brake switch, which can also lead to cruise control malfunctions. Throughout this process, remain vigilant while driving, especially if the cruise control fails unexpectedly, as this can impact vehicle control. By following this structured approach, you can efficiently diagnose and potentially resolve cruise control issues in your Saturn LW1.

What Could Cause the Cruise Control to Malfunction in a Saturn LW1?

When diagnosing cruise control issues in a Saturn LW1, it's crucial to understand the common problems that may arise. A blown fuse is often the first suspect, as it can disrupt power to essential components like the cruise control switch and the vehicle's speed sensor. Additionally, a defective brake pedal switch can prevent the system from engaging, as it signals when the brakes are applied. Another potential culprit is the throttle control system, which, if malfunctioning, can hinder the cruise control's ability to maintain speed. For older models, a broken vacuum line may be responsible for the failure, as these systems rely on vacuum pressure to operate effectively. Furthermore, inspect the cruise control button on the steering wheel for any signs of damage or debris that could impede its function. By systematically checking these components, DIYers can effectively troubleshoot and resolve cruise control malfunctions in their Saturn LW1.

Why is the Cruise Control Not Working in a Saturn LW1?

When the cruise control in your Saturn LW1 is not functioning, it is crucial to address the issue without delay, as neglecting it can lead to safety risks and further vehicle damage. A blown fuse is often a primary culprit, disrupting power to essential components like the cruise control switch and vehicle speed sensor. Additionally, a defective brake pedal switch can prevent the cruise control from engaging, while problems with the throttle control system or ABS may also contribute to the malfunction. In older models, a broken vacuum line can be the source of the issue. If the cruise control servo detects a loss of continuity, it may cancel the set speed, especially if the brake release switch is faulty. Furthermore, a malfunctioning vehicle speed sensor can hinder the system's ability to maintain the correct speed, making it imperative to diagnose these issues promptly. Riding the clutch can also interfere with the cruise control's operation. Given the potential safety hazards associated with a malfunctioning cruise control system, it is advisable to refrain from using it until the problem is resolved. Consulting a trusted mechanic for a thorough diagnosis and necessary repairs is the best course of action to ensure your vehicle remains safe and reliable on the road.

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.