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How to troubleshoot Kia Sorento Third Generation (2015-2020) cruise control issues? - Kia Sorento
Home/Cars/Kia/Sorento/Third Generation (2015-2020)/How to troubleshoot Kia Sorento Third Generation (2015-2020) cruise control issues?

How to troubleshoot Kia Sorento Third Generation (2015-2020) cruise control issues?

Kia Sorento Third Generation (2015-2020)

Error Codes
medium
Difficulty
medium
Severity
Navigation
ProblemSolution
ProblemSolution
4 min read
738 words

Problem Statement

## Troubleshooting Kia Sorento Third Generation (2015-2020) Cruise Control Issues

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Additional Information

Difficulty
medium
Severity
medium

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Troubleshooting Kia Sorento Third Generation (2015-2020) Cruise Control Issues
Symptoms
  1. Cruise Control Not Engaging: The cruise control system does not activate when the button is pressed.
  2. Cruise Control Disengages Unexpectedly: The cruise control engages but turns off without pressing the brake or clutch pedal.
  3. Cruise Control Speed Cannot Be Set: The system activates but does not allow the driver to set or adjust the speed.
Diagnostic Steps

  1. Initial Inspection:

    • Verify that the vehicle is in proper operating condition (engine running smoothly, no warning lights).
    • Check the cruise control button on the steering wheel for damage or wear.

  2. Check for DTCs (Diagnostic Trouble Codes):

    • Use an OBD-II scanner to check for any trouble codes related to the cruise control system. Specific codes to note include:
      • P0571: Cruise Control / Brake Switch A Circuit
      • P0572: Cruise Control / Brake Switch A Circuit Low
      • P0573: Cruise Control / Brake Switch A Circuit High

  3. Inspect the Brake Light Switch:

    • The cruise control system relies on the brake light switch to function correctly.
    • Ensure that the brake lights operate normally.
    • If the brake lights are stuck on or do not illuminate, the switch may be faulty.

  4. Check the Clutch Pedal Position Switch (for manual transmission):

    • Ensure that the clutch pedal position switch is functioning, as this is essential for cruise control operation in manual vehicles.

  5. Examine the Cruise Control Module:

    • Check for signs of damage or corrosion on the cruise control module and its connectors.
    • Ensure all wiring and connectors are secure.

  6. Inspect the Throttle Position Sensor (TPS):

    • A malfunctioning TPS can affect cruise control functionality.
    • Monitor TPS readings with a scan tool; they should match expected values during throttle application.

  7. Test the Vehicle Speed Sensor (VSS):

    • Verify that the vehicle speed sensor is functioning correctly. A faulty VSS can prevent cruise control from engaging.
    • Check VSS readings via a scan tool to ensure they are within the expected range.
Tools Required
  • OBD-II Scanner
  • Multimeter
  • Basic hand tools (screwdrivers, wrenches)
  • Torque wrench
  • Vehicle repair manual (for specific torque specs and part locations)
Repair Instructions

Step 1: Repair or Replace Brake Light Switch

  • Removal:
    1. Disconnect the battery.
    2. Locate the brake light switch under the dashboard near the brake pedal.
    3. Remove the switch by unclipping or unscrewing it.
  • Installation:
    1. Install the new brake light switch in the reverse order of removal.
    2. Reconnect the battery and test the brake lights.

Step 2: Repair or Replace Clutch Pedal Position Switch (if applicable)

  • Removal:
    1. Disconnect the battery.
    2. Locate the clutch pedal position switch, typically mounted on the clutch pedal assembly.
    3. Disconnect the electrical connector and remove the switch.
  • Installation:
    1. Install the new switch, ensuring it is properly aligned with the clutch pedal.
    2. Reconnect the battery and check functionality.

Step 3: Repair or Replace the Cruise Control Module

  • Removal:
    1. Locate the cruise control module, usually near the engine compartment or under the dashboard.
    2. Disconnect the wiring harness and unbolt the module.
  • Installation:
    1. Install the new module in reverse order.
    2. Reconnect the battery and verify system functionality.

Step 4: Replace the Throttle Position Sensor (if faulty)

  • Removal:
    1. Locate the TPS on the throttle body.
    2. Disconnect the electrical connector and unbolt the sensor.
  • Installation:
    1. Install the new TPS, ensuring it aligns correctly.
    2. Reconnect the electrical connector and perform a throttle reset if necessary.

Step 5: Replace Vehicle Speed Sensor (if faulty)

  • Removal:
    1. Locate the VSS, typically on the transmission.
    2. Disconnect the electrical connector and unbolt the sensor.
  • Installation:
    1. Install the new VSS, making sure to torque the bolts to specifications.
    2. Reconnect the electrical connector and test the cruise control system.
Final Steps
  1. Test the Cruise Control: After completing repairs, take the vehicle for a test drive to ensure the cruise control system is functioning as expected.
  2. Clear DTCs: If any trouble codes were present, use the OBD-II scanner to clear them and verify that they do not return after repairs.

By following these detailed steps, you should be able to troubleshoot and resolve cruise control issues on a Kia Sorento from the third generation (2015-2020).