why does my Ram 1500 DT (2019-Present) tire pressure light keep coming on

Ram 1500 DT (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

584 words

Problem Statement

Learn how to diagnose and fix the tire pressure warning light issue in a 2019 Ram 1500 DT. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Tires

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is securely parked before performing any inspections or repairs.
•Wear gloves and safety glasses when handling tires and air compressors.

Symptoms

•Tire pressure warning light is illuminated on the dashboard
•Inconsistent tire pressure readings
•Tires appear visibly under-inflated or over-inflated
•Possible loss of fuel efficiency
•Uneven tire wear observed
•Vehicle handling issues, such as poor traction or stability

Diagnostic Steps

1
Check the tire pressures of all four tires using a reliable tire pressure gauge.
2
Inspect each tire for visible damage, such as punctures, cracks, or bulges.
3
Examine the valve stems for leaks or damage.
4
Verify the operation of the TPMS by using a TPMS scan tool to check for error codes.
5
Reset the TPMS system using the vehicle’s onboard system after adjusting tire pressures.
6
Monitor for changes in the tire pressure warning light after driving for a short distance.

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

•Tire pressure gauge
•TPMS scan tool
•Air compressor

Parts Required

•Replacement tires (if severely damaged)
•Valve stems (if damaged)

Related Faults

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Diagnostic Steps

1
Check the tire pressures of all four tires using a reliable tire pressure gauge.
2
Inspect each tire for visible damage, such as punctures, cracks, or bulges.
3
Examine the valve stems for leaks or damage.
4
Verify the operation of the TPMS by using a TPMS scan tool to check for error codes.
5
Reset the TPMS system using the vehicle’s onboard system after adjusting tire pressures.
6
Monitor for changes in the tire pressure warning light after driving for a short distance.

Solution

1. Preparation

Gather necessary tools: tire pressure gauge, TPMS scan tool, and air compressor.
Ensure the vehicle is parked on a level surface and the tires are cool for accurate pressure readings.

2. Check and Adjust Tire Pressures

Sub-step 1: Remove valve caps from each tire.
Sub-step 2: Using the tire pressure gauge, measure the pressure in each tire.
Sub-step 3: Refer to the driver’s door jamb for the recommended tire pressure specifications.
Sub-step 4: If pressures are low, use the air compressor to inflate each tire to the recommended pressure.
Sub-step 5: If pressures are too high, release air until the correct pressure is achieved.
Sub-step 6: Replace the valve caps securely.

3. Inspect and Repair Tires

Sub-step 1: Visually inspect each tire for cuts, punctures, or bulges.
Sub-step 2: If damage is found, either repair the tire or replace it if the damage is severe.
Sub-step 3: Check the valve stems for leaks; replace any damaged stems.

4. Reset TPMS

Sub-step 1: Turn the ignition to "On" (do not start the engine).
Sub-step 2: Locate the TPMS reset button (usually found under the steering column or in the glove box).
Sub-step 3: Press and hold the reset button until the TPMS light blinks three times, then release.
Sub-step 4: Start the engine and drive for a few minutes to allow the system to recalibrate.