I've had two Garmin mini dash cams fitted to my 2019 GLC, both fitted via parking mode cables to a fuse in the boot.
They don't stay working for long in parking mode so I'm wondering if the fuse used only allows power for a short period? Has anyone encountered this?
I can't imagine the cameras are running the battery voltage too low so quickly? I've only selected two hours but I'm getting about 45 mins tops before they power down- the front camera tends to shut off firstm