how to fix power locks not working on Ram 1500 DT (2019-Present)

Ram 1500 DT (2019-Present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

562 words

Problem Statement

Learn how to diagnose and fix power locks not working on Ram 1500 DT (2019-Present). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shocks or shorts.
•Allow the vehicle to sit for a few minutes after disconnecting the battery to ensure all systems are powered down.

Symptoms

•Doors do not lock or unlock using the key fob
•Manual lock switches inside the vehicle are unresponsive
•Indicator lights on the key fob do not illuminate when pressed
•Possible blown fuses related to the power lock system
•"Door Ajar" warning light may be illuminated

Diagnostic Steps

1
Check the key fob battery for charge and replace if necessary.
2
Inspect the fuse box for any blown fuses related to the power locking system.
3
Use an OBD-II scanner to check for any related error codes.
4
Verify that the door lock actuators are receiving power by testing with a multimeter.
5
Inspect wiring harnesses and connectors for damage or corrosion.

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
•Small flathead screwdriver
•Fuse puller or needle nose pliers
•Socket set
•Multimeter

Parts Required

•Key fob battery (CR2032)
•Replacement fuse (if necessary)
•Door lock actuator (if necessary)

Related Faults

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Diagnostic Steps

1
Check the key fob battery for charge and replace if necessary.
2
Inspect the fuse box for any blown fuses related to the power locking system.
3
Use an OBD-II scanner to check for any related error codes.
4
Verify that the door lock actuators are receiving power by testing with a multimeter.
5
Inspect wiring harnesses and connectors for damage or corrosion.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the battery to ensure safety while working on electrical components.

2. Replace Key Fob Battery

Tools Required: Small flathead screwdriver, new battery (CR2032 or as specified)
Open the key fob using the screwdriver.
Remove the old battery and insert the new one, ensuring correct polarity.
Reassemble the key fob.

3. Inspect and Replace Fuses

Tools Required: Fuse puller or needle nose pliers
Locate the fuse box (typically under the dashboard on the driver's side).
Identify the fuse related to the power locks (refer to the fuse diagram).
Remove the fuse and inspect it for continuity. Replace with a new fuse of the same amperage if blown.

4. Test and Replace Door Lock Actuators (if necessary)

Tools Required: Socket set, multimeter
Remove the door panel to access the door lock actuator.
Disconnect the actuator's electrical connector.
Use a multimeter to check for voltage at the connector when the key fob is pressed.
If no voltage is present, check wiring for damage. If voltage is present but the actuator does not function, replace the actuator.
Reinstall the door panel after replacement.

5. Reconnect Battery

After repairs, reconnect the battery and test the power lock functionality with the key fob and manual switches.