how to fix my Ram 1500 DT (2019-Present) remote start failure?

Ram 1500 DT (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

497 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix remote start failure in Ram 1500 DT (2019-Present). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Remote start button does not respond when pressed
•Engine does not crank or start after remote activation
•No audible feedback (horn chirp) when initiating remote start
•Check engine light illuminated on the dashboard
•Security light blinking on the instrument panel

Diagnostic Steps

1
Verify the key fob battery is functional by testing remote functions (lock/unlock)
2
Check for any error codes using an OBD-II scanner to identify potential issues
3
Inspect the vehicle's battery voltage; ensure it is above 12.4 volts
4
Ensure all doors are closed and properly latched, as open doors can prevent remote start
5
Confirm that the vehicle is in park and the brake pedal is not engaged
6
Check the remote start system fuse for continuity and replace if necessary

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
•Multimeter

Parts Required

•CR2032 battery for the key fob
•Replacement fuse (if necessary)

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Diagnostic Steps

1
Verify the key fob battery is functional by testing remote functions (lock/unlock)
2
Check for any error codes using an OBD-II scanner to identify potential issues
3
Inspect the vehicle's battery voltage; ensure it is above 12.4 volts
4
Ensure all doors are closed and properly latched, as open doors can prevent remote start
5
Confirm that the vehicle is in park and the brake pedal is not engaged
6
Check the remote start system fuse for continuity and replace if necessary

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle's battery to ensure safety while working on the electrical systems.

2. Inspect Key Fob

Sub-steps:
1. Open the key fob using a small flathead screwdriver.
2. Replace the battery with a new CR2032 or equivalent.
3. Reassemble the key fob and test the remote start function.

3. Check the Remote Start System Fuse

Sub-steps:
1. Locate the fuse box (usually under the dash or in the engine compartment).
2. Identify the fuse labeled for the remote start system.
3. Remove the fuse and inspect for any signs of damage or blown elements.
4. Replace with a fuse of the same amperage if necessary.

4. Reset the Vehicle's Security System

Sub-steps:
1. Reconnect the vehicle's battery.
2. Insert the key into the ignition and turn it to the "ON" position without starting.
3. Wait for approximately 10 minutes until the security light turns off.
4. Turn the key off and remove it, then try the remote start again.

5. Reprogram the Remote Start System (if applicable)

Sub-steps:
1. Refer to the owner's manual for specific reprogramming instructions for your model.
2. Follow the steps to enter programming mode.
3. Test the remote start function after reprogramming.