2005 Scion XA Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2005 Scion xA 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 2005 Scion xA 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 2005 Scion xA 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.

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.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2005 Scion xA?

When faced with a non-functioning cruise control in your 2005 Scion xA, it's crucial to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, as malfunctioning buttons can prevent the system from engaging. The vehicle's speed sensor is another critical component; verify its functionality since the cruise control relies on accurate speed readings. Additionally, examine the brake lights, as faulty lights can interfere with the cruise control system's operation. Don't overlook the vacuum lines connected to the cruise control; inspect them for any signs of leaks or damage that could disrupt the system. Finally, using a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues. By following these steps, you can effectively troubleshoot the cruise control system in your Scion xA and potentially resolve the problem without professional help.

What are the common problems that could cause the cruise control to stop working in a 2005 Scion xA?

When diagnosing cruise control issues in a 2005 Scion xA, it's important to explore several common problems that may be at play. A faulty brake pedal switch is often the first suspect, as this component is designed to disengage the cruise control when the brake is pressed; if it fails, the system may not engage at all. Another frequent issue is a defective speed sensor, which plays a critical role in maintaining a constant speed; without it functioning correctly, the cruise control may struggle to operate as expected. Additionally, checking for a blown fuse in the cruise control circuit is essential, as a blown fuse can completely disable the system. Vacuum leaks in the engine can also impact the cruise control's ability to maintain speed, as they disrupt the necessary pressure for proper operation. Lastly, a malfunctioning cruise control module can be a significant factor in system failure. By methodically investigating these potential issues, you can effectively troubleshoot and resolve the cruise control problems in your Scion xA, ensuring a smoother driving experience.

How urgent is it to repair the non-functioning cruise control in a 2005 Scion xA?

When it comes to the urgency of repairing the non-functioning cruise control in a 2005 Scion xA, several critical factors come into play. First and foremost, safety is paramount; a malfunctioning cruise control system can lead to erratic vehicle behavior, such as unexpected acceleration or deceleration, which poses a significant risk to both the driver and others on the road. Additionally, the convenience of cruise control cannot be overlooked, especially during long drives where maintaining a steady speed can alleviate driver fatigue. Without this feature, the driver must constantly monitor and adjust their speed, which can be both tiring and distracting. Furthermore, while the cruise control system may not directly affect the vehicle's overall performance, its malfunction can detract from the driving experience and fuel efficiency. Therefore, addressing the issue promptly is advisable to ensure that the vehicle remains safe, comfortable, and fully functional, ultimately enhancing the driving experience and preventing potential complications down the road.

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