Calibrations

Everything You Need to Know About Interlock Calibrations

Throughout your ignition interlock lease, you’ll have scheduled calibration appointments at your service center. Interlock calibrations are state-mandated, so it’s essential to complete them by the due date to avoid service interruptions. Your IID device will display a countdown to your service date, and you’ll also receive email or text reminders as the date approaches.

You can order your calibration through MyAccount or via text if you’re enrolled in our text messaging program. After placing your order, contact your service center to schedule your appointment—there’s no need to call Intoxalock directly.

At the appointment, the technician will remove and test your handheld to ensure it’s accurately measuring alcohol levels. The calibration process typically takes 3 to 5 minutes, with a small fee for the service.