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There are a couple reasons why the backup camera in your 2018 Mazda3 might not be working properly. First, you should check to ensure that the display is turned on. If that's not the issue, the next step is to perform a forced reboot. To do this, press and hold the Mute Nav and Back buttons simultaneously until the in-dash display restarts. If the problem persists, you'll need to troubleshoot the camera. Start by inspecting the fuses, referring to your owner's manual for their locations and checking any related to the display, radio, camera, or infotainment system. If the fuses are fine, there may be a problem with the camera itself, possibly due to damage or water infiltration.
The camera was damaged by water seeping through the seals, causing a malfunction. Mazda has released an upgraded camera, so make sure to replace yours before the warranty expires.
The reasons why the backup camera on the 2018 Mazda 3 might not be functioning include a blown fuse, faulty switch or wiring, or a weak connection. Since cameras are electronic, a software bug could also cause issues like a black screen or only displaying backup guidelines without the actual image.
I have a car with a feature that activates the camera when I change lanes to display the view of the adjacent lane. This function stopped working after an accident, and I just want to confirm that my memory is correct.