First, try taking the device out and putting it back in. If the red light still doesn’t come in, check that your OBD-II port is functioning. You might try installing the Pulse on another vehicle if possible. If the red light still isn’t coming on, call Metromile at 1-888-311-2909 and they will send you another device. In certain cases, they can send out devices that work with your cigarette port instead. If you don’t get trip data from your device on your app, double check that you have cell reception where you’re parked. If not, please move your vehicle to another location with reception.