Certified by Intoxalock Ignition Interlock • Mar 01, 2026
Car Inspection StationIntoxalock
Intoxalock is the no. 1 ignition interlock device brand in the U.S., and Intoxalock Ignition Interlock in Johnson City, TN 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 TN 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 TN expert.
Details
Onsite servicesAvailable
Location
Certified by Intoxalock Ignition Interlock • Mar 01, 2026
Certified by Intoxalock Ignition Interlock • Mar 01, 2026
Reviews
5.0
11 reviews
5 stars
11
4 stars0
3 stars0
2 stars0
1 star0
EB
Eddie Broyles
Jan 13, 2026
5.0
Very professional and courteous. Would recommend them to anyone!
JS
Jason Starritt
Jan 8, 2026
5.0
Great people, Great service, always willing to work with you.
KR
Kristin Rushing
Sep 30, 2025
5.0
Great agent and gentlemen! I appreciated all his help and knowledge. Super nice man!
LF
Larry Fields
Sep 19, 2025
5.0
Excellent service and knowledge
TT
Trips_hhh
Jan 9, 2025
5.0
Out of all the places you can choose from, Gear Headz are the best. Dashboard Audio has a female lady who talks to people like they’re beneath her and blames people’s vehicles for their equipment malfunctioning . Ellison has a guy who has little man syndrome who ripped out my floorboard lights when he installed my new device and refused to fix it.
I told him how low that is and he proceeded to yell at the top of his lungs at me and told me to get out lol. Tried calling back to meet up like men but between me and him there was only 1 man and it wasn’t him.
Choose Gear Headz ! Their down to earth and all around good chaps .
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.
Brand Certified Facts from Intoxalock Ignition Interlock
This information is certified by Intoxalock Ignition Interlock and published from the brand's official system of record. Data is distributed through an enterprise-grade knowledge management platform. Learn more about our data sources
Certified March 01, 2026Yext Knowledge Graph
Address
Categories
Geo coordinates
Legal business name
Hours of operation
Phone number
Official website
Syndication Network
Approved business data is pushed to 100+ publishers, including: