how to fix the issue with Ram 1500 DT (2019-Present) power locks not working

Ram 1500 DT (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

542 words

Problem Statement

Learn how to diagnose and fix power locks not working in Ram 1500 DT (2019-Present). 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 shorts or shocks.

Symptoms

•Power locks do not respond when activated from the key fob.
•Power locks do not respond when using the door switch.
•Door lock indicator lights do not illuminate.
•Possible intermittent locking/unlocking behavior.
•Key fob battery may drain quickly.

Diagnostic Steps

1
Inspect the key fob battery and replace it if needed.
2
Check for blown fuses related to the power door locks in the fuse box.
3
Use an OBD-II scanner to check for any error codes related to the central locking system.
4
Visually inspect wiring and connectors at the door lock actuators for damage or corrosion.
5
Test the door lock actuators with a multimeter to ensure they are receiving power.
6
Examine the body control module (BCM) for any signs of malfunction.

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
•Screwdrivers (flathead and Phillips)
•Socket set
•Wire strippers and connectors

Parts Required

•Key fob battery (CR2032)
•Replacement fuses (if blown)
•Door lock actuator (if faulty)

Related Faults

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Diagnostic Steps

1
Inspect the key fob battery and replace it if needed.
2
Check for blown fuses related to the power door locks in the fuse box.
3
Use an OBD-II scanner to check for any error codes related to the central locking system.
4
Visually inspect wiring and connectors at the door lock actuators for damage or corrosion.
5
Test the door lock actuators with a multimeter to ensure they are receiving power.
6
Examine the body control module (BCM) for any signs of malfunction.

Solution

1. Preparation

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

2. Inspect and Replace the Key Fob Battery

Remove the key fob cover using a small flathead screwdriver or similar tool.
Replace the old battery (usually CR2032) with a new one, ensuring correct polarity.
Reassemble the key fob and test it.

3. Check and Replace Fuses

Locate the fuse box, typically found under the dashboard or in the engine compartment.
Refer to the owner's manual for the specific fuse related to the power locks.
Remove the blown fuse and replace it with a new fuse of the same amperage rating.

4. Test and Repair Wiring

Remove the door panel to access the wiring harness for the power locks.
Inspect the wiring for frays, breaks, or corrosion.
Repair any damaged wires by soldering or using butt connectors.

5. Test and Replace Door Lock Actuators

Use a multimeter to check for voltage at the door lock actuator connector while operating the lock switch.
If there is no voltage, the issue may lie with the BCM. If there is voltage, the actuator may be faulty.
Remove the actuator and replace it with a new one, ensuring proper alignment and connection.

6. Reconnect the Battery and Test

Reconnect the battery and test the power locks using both the key fob and the door switch.
Ensure all doors respond appropriately.