Intoxalock Ignition Interlock

4.2
13 reviews

About

Car Inspection StationIntoxalock
Intoxalock is the no. 1 ignition interlock device brand in the U.S., and Intoxalock Ignition Interlock in Madison, 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

  • Credit cardAvailable
  • DebitAvailable
  • Onsite servicesAvailable

Location

Intoxalock Ignition Interlock
1815 Gallatin Pike N, Madison, TN
37115, United States

Hours

Reviews

4.2
13 reviews
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  • EF
    Erica Freeman
    Oct 27, 2025
    5.0
    This review is for Cartronics in Madison, Tennessee Not intoxalock they are wonderful 5 stars all the way!!!! Anyway, first of all Cartronics customer service was absolutely terrible. The guy that dealt with me was very rude very very obnoxious and acted annoyed every time I had a question or try to find out anything about what was going on with my car because it Already was the next day whenever my car should’ve been ready the day before so I’m sorry, but I don’t give them a good rating at all. Everybody else I dealt with was awesome but the installation process and the guy that handled my stuff was absolutely horrible.
  • JG
    Jonathan Garrett
    Aug 19, 2025
    5.0
    It was very simple to follow the instructions
  • RR
    Ryan
    Jan 28, 2025
    2.0
    Owner gives no crap
  • GA
    Google Account
    May 4, 2024
    1.0
    This company intoxalock has made it worse than what's needed random chargers are being made to the card on file be aware of your card history I truly regret even thinking about trying to get a driver's license back. Hands Free Tennessee remember? Or is intoxalock above the law?

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.