my Ram 1500 DT (2019-Present) intermittently won't start what should I check

Ram 1500 DT (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

604 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 intermittent starting issues in Ram 1500 DT (2019-present). Step-by-step guide with diagnostic procedures 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 bay

Symptoms

•Engine cranks but does not start
•No dash lights or sounds when turning the key
•Security or anti-theft warning light illuminated
•Occasional successful starts followed by failures
•Clicking noise from the starter motor
•Battery warning light illuminated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any stored diagnostic trouble codes (DTCs)
2
Inspect the battery condition, including voltage and terminal connections for corrosion or looseness
3
Test the starter motor for functionality and ensure it is receiving power during the start attempt
4
Check the ignition switch for proper operation and continuity
5
Examine the fuel system, including fuel pump operation and fuel pressure
6
Review the fuses and relays associated with the starting system for any faults

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
•Wrench set
•Screwdriver set
•Fuel pressure gauge
•Battery terminal cleaner

Parts Required

•Battery (if found defective)
•Starter motor (if required)
•Ignition switch (if faulty)
•Fuel pump (if needed)

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 stored diagnostic trouble codes (DTCs)
2
Inspect the battery condition, including voltage and terminal connections for corrosion or looseness
3
Test the starter motor for functionality and ensure it is receiving power during the start attempt
4
Check the ignition switch for proper operation and continuity
5
Examine the fuel system, including fuel pump operation and fuel pressure
6
Review the fuses and relays associated with the starting system for any faults

Solution

1. Preparation

Gather necessary tools and materials.
Disconnect the negative battery terminal to ensure safety.
Ensure the vehicle is in park or neutral.

2. Battery Inspection

Tools Required: Multimeter, battery terminal cleaner
Clean the battery terminals with a terminal cleaner to remove corrosion.
Use a multimeter to check the battery voltage; it should read at least 12.6 volts.
If the voltage is low, charge the battery or replace it if it fails to hold a charge.

3. Starter Motor Check

Tools Required: Socket set, wrench set
Remove any components obstructing access to the starter motor.
Disconnect the wiring harness from the starter motor.
Use a multimeter to check for voltage at the starter motor terminal while attempting to start the engine.
If no voltage is present, trace back to the ignition switch and wiring for faults.
If voltage is present but the starter does not engage, replace the starter motor.

4. Ignition Switch Inspection

Tools Required: Screwdriver set
Remove the steering column cover to access the ignition switch.
Test the ignition switch with a multimeter for continuity in all key positions (off, accessory, run, start).
Replace the ignition switch if it fails any of the tests.

5. Fuel System Check

Tools Required: Fuel pressure gauge
Locate the fuel pump access point (usually under the rear seat or in the trunk).
Connect the fuel pressure gauge to the fuel rail and turn the ignition to the "on" position without starting the engine.
Check the fuel pressure; it should meet the manufacturer's specifications.
If pressure is low, inspect the fuel pump and replace it if necessary.