Prius Remote Car Start Detection

[JBrown]

Do the USB ports energize when the car is started? If so you could use this or one of the other examples in this thread.

Power Circuit Monitoring for Power Loss

I used a Monoprice Contact Sensor KFR-ZD2105US-5, 2N2222 transistor, 220 ohm resistor and a old USB cord. It uses less current than a relay. [image] [image] [image]