how to troubleshoot the rear parking sensors not working on Ford F-150 13th Generation (2015-2020)

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

455 words

Problem Statement

Learn how to troubleshoot and fix rear parking sensors not working on Ford F-150 (2015-2020). 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 starting any electrical repairs to avoid short circuits.
•Allow the vehicle to cool down before working on any components near the exhaust or engine.

Symptoms

•No audible alert when reversing
•Parking sensor warning light illuminated on the dashboard
•No visual indicators on the rearview camera display
•Sensors appear dirty or damaged
•Inconsistent sensor operation (intermittent beeping)

Diagnostic Steps

1
Inspect the rear parking sensor assembly visually for any physical damage or debris.
2
Use an OBD-II scanner to check for any fault codes related to the parking sensor system.
3
Verify the vehicle's battery voltage to ensure adequate power supply to the sensors.
4
Check the wiring harness and connectors for corrosion or loose connections.
5
Test each sensor individually using a multimeter to check for proper resistance and operational status.
6
Inspect the vehicle's rear control module for any signs of failure or damage.

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
•Soft cloth
•Soapy water
•Soldering iron

Parts Required

•Replacement parking sensors
•Wiring harness

Related Faults

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Diagnostic Steps

1
Inspect the rear parking sensor assembly visually for any physical damage or debris.
2
Use an OBD-II scanner to check for any fault codes related to the parking sensor system.
3
Verify the vehicle's battery voltage to ensure adequate power supply to the sensors.
4
Check the wiring harness and connectors for corrosion or loose connections.
5
Test each sensor individually using a multimeter to check for proper resistance and operational status.
6
Inspect the vehicle's rear control module for any signs of failure or damage.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle battery to ensure safety during repairs.

2. Clean the Sensors

Sub-steps:
- Locate the rear parking sensors on the rear bumper.
- Use a soft cloth and soapy water to gently clean the sensors to remove any dirt or debris.
- Dry the sensors thoroughly with a clean cloth before re-checking functionality.

3. Check and Repair Wiring

Sub-steps:
- Inspect the wiring harness connected to the parking sensors for any signs of wear or damage.
- If damaged, repair the wiring using appropriate gauge wire and soldering techniques.
- Ensure all connectors are clean, secure, and free of corrosion.

4. Replace Faulty Sensors

Sub-steps:
- Identify the non-functioning sensors using the multimeter.
- Remove the bumper cover if necessary to access the sensors.
- Disconnect the wiring harness from the faulty sensor.
- Remove the sensor by twisting it counterclockwise.
- Install the new sensor by inserting it into the mounting hole and twisting it clockwise to secure.
- Reconnect the wiring harness to the new sensor.

5. Reconnect Battery and Test

Sub-steps:
- Reconnect the vehicle battery.
- Start the engine and shift into reverse to test the parking sensors.
- Listen for audible alerts and check the dashboard warning lights.

Tools Required:

OBD-II scanner
Multimeter
Socket set
Soft cloth
Soapy water
Soldering iron (if wiring repair is needed)

Parts Required:

Replacement parking sensors (if needed)
Wiring harness (if needed)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before starting any electrical repairs to avoid short circuits.
Allow the vehicle to cool down before working on any components near the exhaust or engine.