Ignition interlock device installations usually take 1-2 hours at your local Official Intoxalock Location, depending on the make and model of your vehicle. You can either wait for the installation to be complete in a waiting area or can drop off your vehicle for pick-up later.
Brand Certified
Intoxalock Ignition Interlock
4.2(32 reviews)
Certified by Intoxalock Ignition Interlock • Aug 30, 2026
Business Details
642 E Governor John Sevier Hwy, Knoxville, TN
37920, United States
Certified by Intoxalock Ignition Interlock • Aug 30, 2026
(865) 978-6123
Certified by Intoxalock Ignition Interlock • Aug 30, 2026
https://www.intoxalock.com/locations/tn/knoxville/642-e-governor-john-sevier-hwy-2812
Certified by Intoxalock Ignition Interlock • Aug 30, 2026
About
Certified by Intoxalock Ignition Interlock • Aug 30, 2026
Car Inspection StationIntoxalock
Intoxalock is the no. 1 ignition interlock device brand in the U.S., and Intoxalock Ignition Interlock in Knoxville, 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.
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Location
Certified by Intoxalock Ignition Interlock • Aug 30, 2026
Intoxalock Ignition Interlock
642 E Governor John Sevier Hwy, Knoxville, TN
37920, United States
Hours
Certified by Intoxalock Ignition Interlock • Aug 30, 2026
Monday8:00 AM - 3:00 PM
Tuesday8:00 AM - 3:00 PM
Wednesday8:00 AM - 3:00 PM
Thursday8:00 AM - 3:00 PM
Friday8:00 AM - 3:00 PM
SaturdayClosed
SundayClosed
Products & Services
1 list · 3 items
Reviews
4.2
32 reviews
5 stars
23
4 stars
2
3 stars
1
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1
1 star
5
- JCJames CarterJul 23, 20265.0Great experience
- ITInferno-Toyata TacomaJul 7, 20261.0Got a faulty device had to get towed back to the place that installed it. They wouldn’t pay for the tow. Had to call out from work. While I waited for the tow truck. Left me stranded at the coffee shop. Just wanted some coffee before I went to work. The guy on the phone tried to speak English and kept saying it was the battery. Then saying take the key out and put it back in. Kept telling him it was a push button start. He didn’t understand at all. So good job on wasting my day. Lost money on my paycheck. And having to pay for tow.
- MBMatthew BoyerJun 27, 20265.0AutoMaxx Service Center has been great so far with the installation and care of my less than fortunate event that lead me here. Jacob made a great first impression and I hope it continues through the year of service that's needed.
- EVEmily ValentineMay 11, 20225.0I had a Wonderful experience with the owner and installation of my device at Automaxx. Was Super friendly, fast, informative, and addressed All my questions a or concerns. A+++! Thank You!
- JHJacob HicksMar 25, 20193.0Undecided
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 Knoxville, TN provide?
Intoxalock Ignition Interlock offers installation, calibration, and removal of ignition interlock devices (IIDs) to help customers comply with DUI regulations and get back on the road safely.
How do ignition interlock devices (IIDs) work?
An IID is a breathalyzer installed in your vehicle that prevents it from starting if it detects alcohol on your breath. You blow into the device before driving and may be required to provide periodic retests during your trip.
What is the typical cost for installing an ignition interlock device?
Installation usually costs between $70 and $150 as a one-time fee paid to the service center at the time of installation.
Where can I get an ignition interlock device installed in Knoxville?
You can schedule an installation appointment at Intoxalock's certified service center located at 642 E Governor John Sevier Hwy, Knoxville, TN, or other certified locations nearby.
What are the business hours for Intoxalock Ignition Interlock in Knoxville?
The physical location is open Monday through Friday from 8:00 AM to 3:00 PM and closed on weekends. Online services are available 24 hours a day, 7 days a week.
What should I do if my ignition interlock device locks me out?
If locked out due to missed or failed tests, contact Intoxalock customer support for assistance and to understand the steps needed to regain vehicle operation.
Can I install an ignition interlock device on a vehicle I don't own?
Yes, provided the vehicle owner consents. Intoxalock works with both you and the vehicle owner to ensure compliance with state regulations.
Which nearby places in Knoxville might be useful when visiting Intoxalock Ignition Interlock?
Nearby places include Alcohol Detection Systems Ignition Interlock for alternative IID services, Chapman Recreation Center if you're looking for leisure activities nearby, and Korner Market for dining options such as burgers before or after your visit.
How can nearby services like RoadGuard Ignition Interlock and High Velocity Heads complement my visit to Intoxalock?
RoadGuard Ignition Interlock offers alternative IID options while High Velocity Heads provides automotive parts and repair services. This allows you to address various automotive or safety needs in one trip to the area.
Are there wellness or relaxation options near Intoxalock in Knoxville?
Yes, several nearby wellness options include Blossom & Bliss Massage Studio, Embody Wellness Center, and Kersey Laser & Spa to help you relax after your appointment.
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