why does my Ford Explorer's cruise control not work

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

660 words

Problem Statement

Learn how to diagnose and fix cruise control issues in Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent short circuits.

Symptoms

•Cruise control indicator light not illuminated
•Cruise control not engaging when activated
•Inconsistent speed, system disengaging unexpectedly
•No response from cruise control buttons on the steering wheel
•Check engine light illuminated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential issues.
2
Inspect the cruise control fuse for continuity and replace if blown.
3
Check the brake pedal switch to ensure it is functioning correctly; it should not be stuck in the 'off' position.
4
Test the cruise control module for power and ground signals.
5
Inspect the throttle position sensor for proper operation, as it can affect cruise control functionality.
6
Verify the speed sensor is providing accurate readings to the engine control unit (ECU).

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

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Screwdriver set
•Pliers or fuse puller

Parts Required

•Cruise control fuse (if blown)
•Brake pedal switch (if defective)
•Cruise control module (if faulty)
•Throttle position sensor (if defective)
•Speed sensor (if defective)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential issues.
2
Inspect the cruise control fuse for continuity and replace if blown.
3
Check the brake pedal switch to ensure it is functioning correctly; it should not be stuck in the 'off' position.
4
Test the cruise control module for power and ground signals.
5
Inspect the throttle position sensor for proper operation, as it can affect cruise control functionality.
6
Verify the speed sensor is providing accurate readings to the engine control unit (ECU).

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to ensure safety during repairs.

2. Inspect and Replace Fuse

Locate the fuse box (usually found under the dashboard or in the engine compartment).
Identify the cruise control fuse using the diagram on the fuse box cover.
Remove the fuse using a fuse puller or pliers.
Inspect the fuse for any signs of damage; replace it with the same amperage rating if necessary.

3. Check Brake Pedal Switch

Locate the brake pedal switch, typically mounted on the brake pedal assembly.
Inspect the switch for any physical damage or misalignment.
Use a multimeter to test the switch's continuity; it should show continuity when the brake pedal is not pressed.
If faulty, remove the switch by disconnecting the wiring harness and unscrewing it from its mount. Install a new switch by reversing the process.

4. Test the Cruise Control Module

Locate the cruise control module, usually found near the engine bay or under the dashboard.
Disconnect the wiring harness and use a multimeter to check for voltage at the power and ground terminals.
If no voltage is present, trace the wiring back to the power source and repair any breaks or shorts.
If the module itself is faulty, replace it by removing it from its mount and disconnecting the harness.

5. Inspect Throttle Position Sensor

Locate the throttle position sensor on the throttle body.
Disconnect the electrical connector and use a multimeter to check the resistance values according to the manufacturer's specifications.
If out of range, remove the sensor by unscrewing it from the throttle body and installing a new one.

6. Verify Speed Sensor Functionality

Locate the speed sensor, often found on the transmission.
Inspect the wiring and connector for damage or corrosion.
Test the sensor using a multimeter to ensure proper signal output; replace if defective.