Smart Start Ignition Interlock
Infinity Auto Works
7911 Cryden WayDistrict Heights, MD 20747
Services at this Location:
- Installations
- Calibrations
Book an Installation
With the thousands of locations across the nation, 24/7 customer support, no hidden fees and the most reliable device on the market, Smart Start Ignition Interlock devices are hands-down the best way to get you back on the road fast.
Get a quick and easy IID installation with Smart Start! Get started today!
¡Obtenga una instalación rápida y fácil de IID con Smart Start! ¡Empieza hoy mismo!
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Why Choose Smart Start Ignition Interlock?
From $1.99/Day* - No Long-Term Contracts
Bi-weekly payment options designed to fit your budget.
IGNITION INTERLOCK COSTS3,000+ Locations - Same Day Install
Quick installs by skilled technicians at convenient U.S. locations.
FIND A LOCATIONDiscreet, Easy-to-Use Devices
Reliable, hygienic devices with guided tests and easy English-Spanish switching.
SMART START DEVICES24/7 Knowledgeable State Program Experts
Multilingual support trusted by over 1 million people, ready when you need us.
TALK TO A PROGRAM ADVISOR
#1 Ignition Interlock Device Provider at Infinity Auto Works in District Heights
Need an Ignition Interlock in District Heights? Get back on the road with Smart Start, Maryland’s ultimate Ignition Interlock Device provider. We make your Ignition Interlock program simple, affordable and reliable with 24/7/365 customer service and easy, quick tests. You’ll receive hands-on training with our friendly, licensed technicians until you are comfortable testing with your Ignition Interlock.
We look forward to serving you! Smart Start District Heights, MD is located at Infinity Auto Works off 7911 Cryden Way.
Call in today at (301) 778-1251 or fill out our online form to schedule your installation appointment. You can find other convenient Smart Start locations in District Heights or throughout Maryland. Be sure to ask about any current state specials or discounts!
Frequently Asked Questions
How much does an Ignition Interlock Device cost in Maryland? What are the fees?
The overall cost of an Ignition Interlock Device is a combination of installation fees, monthly service fees, and removal fees. Exact pricing varies by state. To get a quote today, call (800) 831-3299 to speak with a friendly Program Advisor.
What do I need to bring to my installation in District Heights?
Once you have scheduled your Ignition Interlock Device (IID) installation with Smart Start, you will need to bring the following to your IID installation appointment in Maryland:
- Two valid forms of identification—one of which should include a photo of you.
- Proof of residence.
- Any and all court documents that may be relevant to your Ignition Interlock Device requirement or your restricted driving period.
- Vehicle registration. If you do not own the vehicle on which you’re installing the Ignition Interlock Device, or if that vehicle is not registered to you, you will need to bring a letter of permission from the registered owner stating that you are allowed to install an Ignition Interlock Device on the vehicle.
- The vehicle on which you’ll be installing an Ignition Interlock Device (IID).
If you have any additional questions or concerns about the installation process or what is required for a successful installation, please don’t hesitate to call our customer care team at (800) 831-3299. You can also click on the chat window below to begin a discussion with one of our customer care advocates.
Where can I go for service? Anywhere, or just within my state?
You may be able to service your Ignition Interlock Device at any Smart Start service center nationwide. However, we strongly suggest checking with your state authority in Maryland before seeking service outside of your state. Find the nearest Smart Start service center here.
How often does my IID need to be serviced in Maryland?
Typically, you will need to service your Ignition Interlock Device (IID) once every 30-60 days or as determined by your jurisdiction in Maryland.
What constitutes a violation in Maryland?
Ignition Interlock Device violation criteria can vary by state. Any and all of the following may constitute a violation in Maryland:
- A skipped rolling retest
- Tampering with the Ignition Interlock Device in any way
- Any breath sample that registers a BrAC above .02 percent
- Missing your scheduled IID service appointment
Learn more about Ignition Interlock Device violations.
How can I pay for calibration?
In Maryland, you can pay for your Interlock Device calibration via credit card at the Smart Start service center at the time of calibration or via the online Client Portal.
Nearby Locations
Tricked Out Services
7954 CRYDEN WAY
District Heights, MD 20747
CLOSED – Opens at 9:00am Fr
Services at this Location:
Installations, Calibrations
Quality Lab
9642 Marlboro Pike
Upper Marlboro, MD 20772
CLOSED – Opens at 9:00am Fr
Services at this Location:
Sign Up, Manage Account, Informational Videos
Auto Xpressions Customs
416 Hampton Park Blvd
Capitol Heights, MD 20743
CLOSED – Opens at 9:00am Fr
Services at this Location:
Installations, Calibrations
See What Everyone Says About Our Ignition Interlock
Excellent TrustScore Rating
February 19, 2026
"I was very satisfied with the way she helped me through this whole process "
Alrick P.
United States
February 19, 2026
"Was great to talk too and knowledgeable "
John L.
United States
February 19, 2026
"I just recently got out of prison and the agent or representative Rashina was outstanding making sure I understood everything and knew what the amounts were going to be. She made me feel very comfortable with doing business with her and the company"
Justin S.
United States








