Brand Certified
Intoxalock Ignition Interlock
5.0(5 reviews)
Certified by Intoxalock Ignition Interlock • Feb 22, 2026
Business Details
752 W. Boyd St, Marshall, MO
65340, United States
Certified by Intoxalock Ignition Interlock • Feb 22, 2026
(660) 530-4653
Certified by Intoxalock Ignition Interlock • Feb 22, 2026
https://www.intoxalock.com/locations/mo/marshall/752-w-boyd-st-9722
Certified by Intoxalock Ignition Interlock • Feb 22, 2026
About
Certified by Intoxalock Ignition Interlock • Feb 22, 2026
Car Inspection StationIntoxalock
Get back on the road confidently with Intoxalock, the trusted Ignition Interlock Device (IID) provider of Marshall, Missouri and the no. 1 interlock device brand in the U.S.. Located in the Marshall neighborhood at 752 W Boyd St, we offer fast and affordable court-approved IID installation, calibration, and removal services. Our certified technicians ensure a smooth, stress-free experience while helping you stay compliant with Missouri interlock laws. With 24/7 customer support, Intoxalock makes the process easy for drivers to regain their licenses after a DUI. Visit us in MO near you or call our state specialists to schedule your car breathalyzer installation and get back on the road safely!
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Certified by Intoxalock Ignition Interlock • Feb 22, 2026
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Certified by Intoxalock Ignition Interlock • Feb 22, 2026
Reviews
5.0
5 reviews
5 stars
5
4 stars0
3 stars0
2 stars0
1 star0
- JHJoshua HopperJan 31, 20265.0They done a great job fast and easy
- LHLarry HostetterOct 12, 20245.0Excellent
- ENEvelyn Payne (Nadine)Mar 23, 20235.0Alex has been my mechanic during my time of my use of the interlock system and is the best. My initial set up was a breeze and although my vehicle started acting up, he made time to fix the issue and keep me on the road. Thank you Alex and I greatly appreciate your time and persistence.
- JFJ.r FreemanJul 18, 20225.0Always very helpful, and respectful!
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 Marshall, MO provide?
Intoxalock Ignition Interlock in Marshall, MO offers court-approved ignition interlock device (IID) installation, calibration, and removal services with certified technicians to ensure compliance with Missouri interlock laws.
Where is Intoxalock Ignition Interlock located in Marshall, MO?
The business is located at 752 W. Boyd St, Marshall, MO 65340, United States.
What are the business hours for Intoxalock Ignition Interlock in Marshall?
The shop is open Monday through Friday from 8:30 AM to 5:00 PM and closed on Saturdays and Sundays. Online customer service is available 24/7.
How does an ignition interlock device (IID) work?
An IID is a breathalyzer installed in your vehicle that prevents it from starting if alcohol is detected on your breath. You blow into the device to start your car and may be prompted for periodic retests during your drive to ensure compliance.
How much does it cost to install an ignition interlock device at Intoxalock?
Installation costs typically range between $70 and $150 as a one-time fee paid at installation. Additional details about costs can be found on Intoxalock's cost guide.
Can I install an ignition interlock device on a car I don't own?
Yes, you can install an IID on a vehicle you regularly drive if you have the vehicle owner's consent. Intoxalock will work with you and the owner to comply with state laws.
What payment options does Intoxalock Ignition Interlock accept?
They accept American Express, Check, Discover, Financing options, Mastercard, and Visa.
What should I do if my ignition interlock device locks me out?
If locked out, contact Intoxalock customer support for assistance. Lockouts can be due to missed or failed tests or state requirements, and a lockout override process is available in most cases.
What nearby automotive services are available around Intoxalock Ignition Interlock in Marshall?
Nearby automotive services include Ground Limit Auto Shop and Marshall Diesel for vehicle repair and maintenance, and King’s Body Shop for auto body work, helping you with comprehensive vehicle needs before or after your IID installation.
What convenience and food options are near Intoxalock Ignition Interlock in Marshall?
Nearby options include Pop Shop and Collins Pop Shop liquor and convenience stores, as well as restaurants like Pioneer Cafe, Mama's Oven, Bar-B-Que Pit Stop, and Plowboys BBQ Marshall for dining before or after your visit.
Are there any community and public services near Intoxalock Ignition Interlock in Marshall?
Yes, Marshall Public Library, Marshall Animal Shelter, and Powerhouse Community Development Corporation are nearby, offering community resources and services that customers might explore while in the area.
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