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

Ram 1500 DT (2019-Present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

536 words

Problem Statement

Learn how to diagnose and fix the tire pressure light issue on your 2019 Ram 1500 DT. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to prevent short circuits.
•Ensure the vehicle is securely lifted and supported before working beneath it.

Symptoms

•Tire pressure monitoring system (TPMS) warning light illuminated on the dashboard
•Possible fluctuation in tire pressure readings
•Manual tire pressure check shows discrepancies from the recommended levels
•Poor fuel economy due to incorrect tire pressure
•Uneven tire wear observed during inspection

Diagnostic Steps

1
Scan the vehicle's OBD-II system for any diagnostic trouble codes (DTCs) related to the TPMS.
2
Check the tire pressures of all four tires and compare them to the manufacturer's recommended levels found on the driver’s door jamb.
3
Inspect the TPMS sensors in each tire for damage, corrosion, or malfunction.
4
Verify that the TPMS receiver in the vehicle is functioning properly by checking for signal reception from sensors.
5
Reset the TPMS system using the vehicle’s onboard computer or through the OBD-II scanner if applicable.

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
•Tire pressure gauge
•Air compressor
•Jack and jack stands
•Tire iron
•TPMS sensor tool

Parts Required

•Replacement TPMS sensors (if applicable)

Related Faults

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Symptoms

•Tire pressure monitoring system (TPMS) warning light illuminated on the dashboard

•Possible fluctuation in tire pressure readings

•Manual tire pressure check shows discrepancies from the recommended levels

•Poor fuel economy due to incorrect tire pressure

•Uneven tire wear observed during inspection

Diagnostic Steps

1
Scan the vehicle's OBD-II system for any diagnostic trouble codes (DTCs) related to the TPMS.
2
Check the tire pressures of all four tires and compare them to the manufacturer's recommended levels found on the driver’s door jamb.
3
Inspect the TPMS sensors in each tire for damage, corrosion, or malfunction.
4
Verify that the TPMS receiver in the vehicle is functioning properly by checking for signal reception from sensors.
5
Reset the TPMS system using the vehicle’s onboard computer or through the OBD-II scanner if applicable.

Solution

1. Preparation

Gather the necessary tools and parts.
Ensure the vehicle is parked on a level surface.
Turn off the ignition and disconnect the battery to avoid electrical issues.

2. Check and Adjust Tire Pressure

Tools Required: Tire pressure gauge, air compressor.
Using the tire pressure gauge, check the pressure of each tire.
Inflate or deflate the tires to match the recommended pressures.
Reconnect the battery.

3. Inspect and Replace TPMS Sensors (if necessary)

Tools Required: Jack and jack stands, tire iron, TPMS sensor tool, replacement TPMS sensors.
Lift the vehicle using a jack and secure it with jack stands.
Remove the wheel using the tire iron.
Detach the TPMS sensor from the valve stem.
Inspect for damage; if damaged, replace with a new sensor.
Reinstall the sensor and secure it properly.

4. Reset the TPMS

Tools Required: OBD-II scanner (if required).
Follow the manufacturer’s procedure to reset the TPMS system. This may involve using the onboard settings or an OBD-II scanner.
Confirm that the warning light has turned off.