how to fix my Ram 1500 DT (2019-Present) windshield wipers that won't turn off?

Ram 1500 DT (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

470 words

Problem Statement

Learn how to diagnose and fix windshield wipers that won't turn off in Ram 1500 DT (2019-Present). Step-by-step guide with tools and parts required.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow vehicle systems to discharge before touching electronic components.

Symptoms

•Windshield wipers continuously running
•Wipers do not respond to switch position changes
•Possible erratic wiper movement or speed
•Wiper fluid may also spray unexpectedly
•Dashboard warning lights related to wiper system may illuminate

Diagnostic Steps

1
Inspect the wiper switch for any visible damage or wear.
2
Check the wiper relay for signs of failure or overheating.
3
Use an OBD-II scanner to check for any fault codes related to the wiper system.
4
Test the wiper motor by applying direct power to see if it operates correctly.
5
Inspect the wiring harness for any shorts, frays, or corrosion.
6
Check the body control module (BCM) for any software issues or 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
•Screwdrivers (Torx and Phillips)
•Relay puller or pliers
•Multimeter (optional for electrical testing)

Parts Required

•Wiper relay (if faulty)
•Wiper switch (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the wiper switch for any visible damage or wear.
2
Check the wiper relay for signs of failure or overheating.
3
Use an OBD-II scanner to check for any fault codes related to the wiper system.
4
Test the wiper motor by applying direct power to see if it operates correctly.
5
Inspect the wiring harness for any shorts, frays, or corrosion.
6
Check the body control module (BCM) for any software issues or faults.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the ignition is turned off.

2. Disconnect Battery

Disconnect the negative terminal of the battery to prevent electrical shorts.
Wait for at least 10 minutes before proceeding to allow systems to reset.

3. Access the Wiper Switch

Remove the steering column cover using a Torx or Phillips screwdriver.
Disconnect the wiper switch connector by pressing the release tab and pulling it out.

4. Inspect and Replace the Wiper Relay

Locate the fuse box (usually under the dashboard or hood).
Remove the wiper relay using a relay puller or pliers.
Inspect for damage; if faulty, replace with a new relay of the same specifications.

5. Replace Wiper Switch (if necessary)

If the switch is damaged, replace it:
- Install the new wiper switch by connecting the wiring harness and securing it in place.
- Reattach the steering column cover.

6. Reconnect Battery and Test

Reconnect the negative terminal of the battery.
Start the vehicle and test the wipers in all positions to ensure they operate correctly.