I know exactly what you mean. My hubby’s BMW power port stays on even with the engine is off, whereas my Toyota does not. I have both the C1 and C1 Pro. I find that the side button to turn the dashcam on/off on the C1 is ultra sensitive. I have found that even when it’s turned off, just a tiny jolt can somehow turn it on. And if the power somehow cuts off then back on, then the C1 will go into continuous recording. Just remember, if the C1 is plugged in, by default… it’s suppose to do continuous recording. The only one that I find that won’t come on is Parking Monitor, if you turn that feature off. Therefore, in my hubby’s car, we always unplug the power cord when we are not in the car. Also by doing this, the Parking Monitor feature will kick in and do it’s job when the car is unattended. Hope that helps and makes sense.