Kia K900 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Kia K900 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 Kia K900 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 Kia K900 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.

Troubleshooting Cruise Control Issues in a Kia K900

When troubleshooting cruise control issues in your Kia K900, begin by checking the simplest components first. Start with the fuse associated with the cruise control system, as a blown fuse can easily disrupt functionality. Next, inspect the brake lights and the brake switch; if the brake lights are not functioning correctly, the cruise control may not engage. If these initial checks do not resolve the issue, consider examining the control module and throttle sensor, as malfunctions in these areas can lead to more complex problems. Pay attention to any symptoms such as the cruise control radar system activating without proper function or the "SET" light failing to illuminate, as these can provide clues to the underlying issue. If you notice that the smart cruise control is not detecting vehicles properly, this may indicate a sensor problem that requires further investigation. Should these steps not yield results, it may be time to consult a professional mechanic for a thorough diagnosis and repair of the cruise control system. By following this methodical approach, you can effectively identify and address the common causes of cruise control malfunctions in your Kia K900.

Troubleshooting Cruise Control Issues in a Kia K900

When troubleshooting cruise control issues in your Kia K900, it's essential to understand the common problems that may arise. One frequent culprit is a malfunctioning control module, which can prevent the system from engaging properly. Additionally, sensor or switch failures can disrupt the functionality of the cruise control, leading to erratic behavior or complete inoperability. If your vehicle is equipped with a smart cruise control system, be aware that sensor issues can pose safety risks, such as failing to detect vehicles ahead or accelerating unexpectedly. It's also crucial to remember that for the cruise control to activate, you must press the brake pedal at least once after starting the car; neglecting this step can hinder engagement. Lastly, inspect the cruise control button for any debris or damage, as a broken button can obstruct operation. By systematically checking these areas, you can effectively diagnose and potentially resolve the cruise control issues in your Kia K900.

Why is the Cruise Control Not Working in a Kia K900?

When the cruise control in your Kia K900 is not functioning, it’s crucial to address the issue without delay. Ignoring symptoms such as unresponsive controls or erratic behavior can not only compromise your driving experience but also pose significant safety risks. For instance, a malfunctioning cruise control system may lead to unexpected acceleration or deceleration, which can be dangerous in high-speed situations. Additionally, underlying problems like a failed control module, defective brake pedal switch, or blown fuses can escalate if left unchecked, potentially resulting in costly repairs or even engine damage. Therefore, it’s advisable to conduct a thorough inspection of the cruise control system, focusing on common culprits such as throttle actuation issues and sensor malfunctions. By taking prompt action, you can ensure your Kia K900 remains safe and reliable on the road.

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