How can I fix the rearview camera malfunctioning in my 2020 Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

Error Codes

2-3 hours

Time

medium

Difficulty

medium

Severity

Error Code: U0100, U0155

3 min read

578 words

Problem Statement

Learn how to diagnose and fix rearview camera issues in your 2020 Toyota Highlander with step-by-step instructions.

Error Code

U0100, U0155

Affected Component

rearview camera

Estimated Time

2-3 hours

Symptoms

•No Image Displayed
•Distorted Image
•Error Message
•Intermittent Functionality

Diagnostic Steps

1
Check the Infotainment System
2
Inspect the Camera
3
Use Diagnostic Tools

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
•Screwdriver Set
•Trim Removal Tool
•Electrical Connector Cleaner
•Soft Cloth for Cleaning

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Back to Generation

Fixing Rearview Camera Malfunction in 2020 Toyota Highlander

Step 1: Check the Infotainment System

Power Cycle the System: Turn off the vehicle and restart it. Sometimes, a simple reset can resolve electronic glitches.
Check Settings: Ensure that the rearview camera is activated in your vehicle’s settings menu.

Step 2: Inspect the Camera

Visual Inspection: Inspect the rearview camera lens for dirt, debris, or damage. Clean the lens with a soft cloth if necessary.
Wiring Check: Look for any visible damage to the wiring harness connected to the rearview camera. Check for frays or loose connections.

Step 3: Use Diagnostic Tools

OBD-II Scanner: Connect an OBD-II scanner to the vehicle's diagnostic port. Check for any trouble codes related to the rearview camera or the vehicle’s electrical system. Common codes include U0100 (lost communication) or U0155 (lost communication with body control module).

Tools Required

OBD-II Scanner
Multimeter
Screwdriver Set
Trim Removal Tool
Electrical Connector Cleaner
Soft Cloth for Cleaning

Repair Instructions

Step 1: Resetting the Infotainment System

Turn Off the Vehicle: Ensure the ignition is off.
Disconnect the Battery: Disconnect the negative terminal of the battery for about 10 minutes to reset the system.
Reconnect the Battery: Reconnect the negative terminal and start the vehicle.

Step 2: Inspect and Clean the Camera

Access the Rear Camera:
- Remove the trim panel around the rear camera (use a trim removal tool to avoid damaging the panel).
- Carefully unscrew or unclip the camera assembly.
Clean the Lens: Use a soft cloth to clean the camera lens. Ensure there is no dirt or moisture obstructing the view.

Step 3: Check and Repair Wiring

Inspect Wiring Harness: Check the wiring harness for any signs of wear, corrosion, or disconnection.
Test Connections: Use a multimeter to check for continuity in the wiring. Ensure that power and ground connections are intact.
Repair or Replace Wires: If you find damaged wires, repair them using heat-shrink tubing or replace them if necessary.

Step 4: Replace the Camera (if necessary)

Remove the Old Camera: If the camera is faulty, remove it from the housing and disconnect the wiring harness.
Install the New Camera: Connect the new camera to the wiring harness and secure it in place.
Reattach the Trim Panel: Carefully reinstall the trim panel, ensuring all clips and screws are secured.

Step 5: Test the Camera

Start the Vehicle: Start the engine and shift into reverse.
Check Camera Functionality: Verify if the rearview camera displays properly on the infotainment screen.
Monitor for Error Codes: Use the OBD-II scanner to check for any new or persistent trouble codes.

Conclusion

If the rearview camera is still malfunctioning after following these steps, it may require professional diagnostics or replacement of the infotainment system or camera module. Contact a certified Toyota technician for further assistance. Always refer to your vehicle's service manual for specific details related to your model.