Intoxalock is the no. 1 ignition interlock device brand in the U.S., and Intoxalock Ignition Interlock in Mason City, IA is here to help you get back on the road after a DUI.
Intoxalock has more locations than any other provider, and we can find an interlock installation location near you. We will help you understand IA interlock, or IID, laws and regulations. Our interlock installation locations are staffed with certified professionals who will install and service your car breathalyzers. For 30 years, Intoxalock has been a trusted interlock ignition device provider. Call now to talk to a IA expert.
Very professional and have yummy treats while I waited. Highly recommend to anyone looking for quality service
JA
Justin Arhart
Sep 3, 2025
5.0
I keep getting false positives and getting locked out I'm getting sick of it how can you be fine driving along hit a 027 pullover and then be at a point zero zero this is ridiculous
Frequently Asked Questions About Intoxalock Ignition Interlock
How does an interlock device work?
An ignition interlock device (IID) is a small breathalyzer installed in your vehicle to prevent it from starting if alcohol is detected on your breath. Before driving, you'll blow into the device. If your breath alcohol concentration (BrAC) is below the programmed limit, the car starts. Periodic retests occur during your trip to ensure continued compliance. To read more on Intoxalock, you can read our ignition interlock device guide.
What is the cost of an ignition interlock device?
The installation of an ignition interlock device, often called a car breathalyzer, typically costs between $70 and $150. This one-time fee is paid at the start of your lease and covers the service center's labor to install the device in your vehicle. Payment is made directly to the service center at the time of installation. For more on cost breakdowns, you can read our cost of ignition interlock device guide.
How do I use my interlock device?
Using an IID is simple. To start your vehicle, blow into the device as directed. If the device detects no alcohol, your car will start. You may be prompted for "rolling retests" while driving, where you’ll blow into the device again to confirm compliance. How-to videos are also available on the Intoxalock mobile app.
Where do I get an ignition interlock device?
Ignition interlock devices can be installed at certified service centers nationwide. Intoxalock offers a convenient network of locations and helps you schedule an installation appointment near you. Visit our Intoxalock locations page or call us to find the nearest service center and begin the installation process.
How long will my installation take?
Installing an ignition interlock device typically takes 1-2 hours, depending on your vehicle type. Certified technicians ensure the device is properly installed and provide you with training on how to use it. Contact Intoxalock for an appointment and an accurate time estimate for your installation.
What happens if I fail a breath test on my ignition interlock device?
If you fail a breath test, your vehicle will not start, and the device will log the event. Depending on your state’s regulations, multiple failed tests may trigger additional penalties, such as lockouts or reporting to your monitoring authority. Intoxalock devices allow you to retest after a short wait if alcohol is no longer detected. Always follow your state’s guidelines to remain compliant.
Can I install an ignition interlock device in a vehicle I don’t own?
Yes, in most cases, you can install an ignition interlock device in a vehicle you regularly drive, even if you’re not the registered owner. However, the vehicle owner must provide consent for the installation. Intoxalock works with you and the owner to ensure compliance with state regulations and the successful setup of the device.
What should I do if my ignition interlock device locks me out?
If your ignition interlock device locks you out, it’s usually due to missed tests, failed tests, or state-specific requirements. Intoxalock offers a simple lockout override process in most cases to help you get back on the road quickly. Contact Intoxalock customer support for assistance and to understand the steps needed to resolve the issue.
What services does Intoxalock Ignition Interlock in Mason City, IA provide?
Intoxalock Ignition Interlock in Mason City offers installation, calibration, and removal of ignition interlock devices (IIDs) with certified professionals to help you comply with state laws.
How does an ignition interlock device work?
An ignition interlock device is a breathalyzer installed in your vehicle that prevents it from starting if alcohol is detected on your breath, including periodic retests while driving.
What are the typical installation hours for the Intoxalock service center in Mason City?
The installation center is open Monday through Friday from 7:30 AM to 4:30 PM and is closed on Saturdays and Sundays.
How can I schedule an installation appointment for an ignition interlock device with Intoxalock?
You can find and schedule an installation appointment at a certified Intoxalock service center near you by visiting their website or calling their customer support.
What payment options are accepted at Intoxalock Ignition Interlock in Mason City?
They accept American Express, Discover, MasterCard, Visa, checks, and offer financing options for device installation and services.
What should I do if my ignition interlock device locks me out?
Contact Intoxalock customer support for assistance with lockouts due to missed or failed tests. They offer a lockout override process to help you get back on the road quickly.
Is Intoxalock affiliated with any competitors?
Intoxalock tracks competitors like Lifesafer, Smartstart Inc, Roadguard, LowCost, and Alcolock to maintain top service and compliance.
What nearby automotive services can I find near Intoxalock Ignition Interlock in Mason City?
Nearby automotive services include Jeffrey Auto Repair for repairs, Auto Plus for parts and accessories, and ServiceMaster by Rice for auto body work and repairs.
Are there any nearby truck rental services close to Intoxalock Ignition Interlock?
Yes, Penske Truck Rental and Ryder Truck Maintenance Shop are nearby, which can be helpful if you need to rent a truck or RV before or after your visit.
What other types of businesses are located near Intoxalock Ignition Interlock that customers might visit?
Nearby businesses include Culver-Hahn Electric Supply for electrical needs, Atlantic Coca-Cola Bottling Company for food and beverage distribution, and UPS Customer Center for shipping and courier services.