why is my BMW 3 Series G20/G21 (2019-2024) backup camera showing a black screen?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle’s battery to ensure safety during repairs.
• Gather the vehicle’s service manual for reference.

2. Inspect and Clean the Camera

• Locate the backup camera, usually mounted above the license plate.
• If any dirt, snow, or debris is obstructing the camera, clean it with a soft cloth.
• Reconnect the battery and check if the camera function is restored.

3. Check Electrical Connections

• Remove the interior trim panel or access panel to reach the camera wiring.
• Inspect all connectors for corrosion or looseness.
• Using a multimeter, check for voltage at the camera connector; it should typically be around 12V when the vehicle is in reverse.
• Repair or replace any damaged connectors.

4. Replace the Backup Camera (if necessary)

• If the camera is faulty, disconnect the wiring harness and remove any screws securing the camera.
• Install the new backup camera by reversing the removal steps.
• Ensure the camera is securely mounted and connected.
• Reattach the interior trim panel.

5. Reconnect Battery and Test

• Reconnect the vehicle's battery.
• Turn on the ignition and engage reverse to test the backup camera.
• Check the infotainment system to confirm the camera is operational.