Can an Ignition Interlock Device Turn Off My Car?

Smart Start goes to great lengths to ensure the safety of our drivers and our devices. That’s why none of our Ignition Interlock Devices will ever turn off the car while you’re driving.

Once you have successfully started the engine using the IID, you will be required to perform random retests – often referred to as “rolling retests” – to ensure that you are not consuming alcohol after starting the engine. If you fail a random retest, the device will register it and report any violation. But the Ignition Interlock will never shut off your car.

We strongly encourage you to pull over to the side of the road in order to take a random retest. The device gives you plenty of time to pull over to a safe space so you can focus on taking a test.

Important: If your vehicle features “start-stop” technology, please let us know when you schedule your appointment. Also, please mention it to the service technician when you arrive for your appointment so that we can successfully install the IID.