how to fix the cruise control not working in my Ram 1500 DT (2019-Present)?

Ram 1500 DT (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

593 words

Problem Statement

Learn how to diagnose and fix cruise control issues in 2019-Present Ram 1500 DT. 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
•Allow the engine to cool before inspecting components near the engine

Symptoms

•Cruise control indicator light not illuminating
•Inability to set or maintain a speed
•Engine speed fluctuates without cruise control engaged
•Dashboard warning lights may illuminate (e.g., ABS, traction control)
•Unresponsive cruise control buttons

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any related diagnostic trouble codes (DTCs)
2
Inspect the cruise control switch and wiring for any visible damage or disconnection
3
Check the brake pedal position sensor for correct operation, as it can disable cruise control if faulty
4
Verify the vehicle speed sensor (VSS) output to ensure the vehicle is registering speed correctly
5
Inspect the fuses associated with the cruise control system for any blown fuses
6
Test the throttle position sensor (TPS) for proper operation, as it can affect cruise control functionality

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
•Socket set
•Screwdriver set
•Torque wrench

Parts Required

•Cruise control switch (if defective)
•Brake pedal position sensor (if faulty)
•Vehicle speed sensor (if necessary)
•Throttle position sensor (if necessary)
•Fuses (if blown)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any related diagnostic trouble codes (DTCs)
2
Inspect the cruise control switch and wiring for any visible damage or disconnection
3
Check the brake pedal position sensor for correct operation, as it can disable cruise control if faulty
4
Verify the vehicle speed sensor (VSS) output to ensure the vehicle is registering speed correctly
5
Inspect the fuses associated with the cruise control system for any blown fuses
6
Test the throttle position sensor (TPS) for proper operation, as it can affect cruise control functionality

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the negative battery terminal to ensure safety while working.

2. Inspect and Repair the Cruise Control Switch

Remove the steering wheel cover using a socket set.
Disconnect the cruise control switch connector.
Inspect the switch for continuity using a multimeter; replace if defective.
Reconnect the switch and reassemble the steering wheel cover.

3. Check the Brake Pedal Position Sensor

Locate the brake pedal position sensor near the brake pedal assembly.
Disconnect the electrical connector and inspect for corrosion or damage.
Test the sensor operation using a multimeter; replace if faulty.
Reconnect the sensor and ensure it is properly aligned.

4. Verify the Vehicle Speed Sensor (VSS)

Locate the VSS, usually mounted on the transmission.
Disconnect the VSS connector and inspect for any damage.
Test the VSS output with a multimeter by checking the voltage while the vehicle is in motion; replace if not within specifications.

5. Inspect Fuses

Locate the fuse box and identify the cruise control fuse (refer to the owner's manual).
Inspect the fuse and replace it if it is blown.
Reassemble the fuse box cover.

6. Test the Throttle Position Sensor (TPS)

Locate the TPS on the throttle body.
Disconnect the TPS connector and check for proper voltage output using a multimeter.
Replace the TPS if it shows inconsistent readings or is outside of manufacturer specifications.