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

Ram 1500 DT (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

479 words

Problem Statement

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

Affected Component

Tire Pressure Monitoring System

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is on a flat surface and properly secured with jack stands before performing any work underneath.

Symptoms

•Tire pressure warning light illuminated on the dashboard
•Inconsistent tire pressure readings on the display
•Tires appear visually deflated or overinflated
•Frequent need to add air to tires
•Possible rough ride or handling issues

Diagnostic Steps

1
Check the tire pressures of all tires, including the spare, using a reliable tire pressure gauge.
2
Inspect each tire for visible damage, such as cuts, punctures, or sidewall bulges.
3
Use an OBD-II scanner to check for any TPMS-related error codes.
4
Reset the TPMS system using the vehicle's onboard menu or appropriate procedure.
5
Inspect the TPMS sensors for corrosion or damage, particularly on the valve stems.
6
Verify the tire pressure monitoring system's battery status, particularly for older sensors.

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
•OBD-II scanner
•Jack and jack stands
•Socket set

Parts Required

•TPMS sensors (if damaged)
•Valve stem caps (if lost)

Related Faults

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Diagnostic Steps

1
Check the tire pressures of all tires, including the spare, using a reliable tire pressure gauge.
2
Inspect each tire for visible damage, such as cuts, punctures, or sidewall bulges.
3
Use an OBD-II scanner to check for any TPMS-related error codes.
4
Reset the TPMS system using the vehicle's onboard menu or appropriate procedure.
5
Inspect the TPMS sensors for corrosion or damage, particularly on the valve stems.
6
Verify the tire pressure monitoring system's battery status, particularly for older sensors.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface.
Prepare to reset the TPMS if necessary.

2. Check and Adjust Tire Pressures

Sub-steps:
- Remove valve caps from each tire.
- Attach the tire pressure gauge to each valve stem and note the readings.
- Inflate or deflate tires to match the manufacturer's recommended pressure, usually found on the driver’s door jamb.
- Replace the valve caps securely.

3. Inspect and Replace TPMS Sensors (if needed)

Sub-steps:
- Lift the vehicle using a jack and secure it with jack stands.
- Remove the wheel from the hub using a socket set.
- Inspect the TPMS sensor mounted on the inside of the wheel for damage.
- If damaged, remove the old sensor by unscrewing the retaining nut and disconnect the sensor from the valve stem.
- Install a new TPMS sensor by reversing the removal steps, ensuring it is tightened to the manufacturer’s specified torque.

4. Reset the TPMS

Sub-steps:
- Turn on the ignition without starting the engine.
- Locate the TPMS reset button (usually beneath the steering column) and press and hold it until the TPMS light blinks three times, indicating reset.
- Start the engine and drive the vehicle for at least 10 minutes to allow the system to recalibrate.

5. Final Inspection

Sub-steps:
- Recheck the tire pressures once more after the reset and adjustments.
- Ensure the tire pressure light is no longer illuminated on the dashboard.

Tools Required:

Tire pressure gauge
OBD-II scanner
Jack and jack stands
Socket set

Parts Required:

TPMS sensors (if damaged)
Valve stem caps (if lost)

Estimated Repair Time: 1-2 hours

Safety Warnings:

Ensure the vehicle is on a flat surface and properly secured with jack stands before performing any work underneath.