Guardian InterlockReviews of guardianinterlock.com

I scheduled the appointment with Guardian but when I arrived at the shop they had no record of my appointment and hadn't been sent the equipment. Guardian then tried to tell me I needed to take my car (which I'm not legally allowed to drive) to another shop. After refusing to do so, they agreed it would stay at the initial shop. I received no communication after that and had to call to request a status update. At that time, the shop tried to charge me for the installation which was advertised as free to get started. When I called Guardian to help resolve it, I got multiple different answers from more than one person. The first person actually told me, "no" when I asked them to stop interrupting me and let me speak. Poor communication and rude representatives who do not know how their service works and what is being advertised made this a horrible experience. To be clear - the fault is all on Guardian's end and not the shop's. Edited 7/25/2025 @ 2:48 PM Mountain - I received a response from Guardian that tried to place the blame on the shop, but also asked that I update my review. Well, here's the update - Asking me to change my review when you're at fault and the service and treatment from your agents is subpar is not helping your case. The review stands and it would be lower if I could give them 0 stars.

Marilynn starnes went above and beyond to help me when I called in today. I've never had such great customer service!!!

This place set an appointment and the shop they set an appointment with canceled without letting me know. Now I have to start all over with another company

Great service

It was a Friday and I had just left my appointment I had the 3rd device installed dye to the first 2 malfunctioning! I go into work for three hours and I go to blow and the bottom connector just cones right off wires and all! I told the lady that it looked loose which she said was fine! I rushed back up to the shop to get it fixed replaced or whatever and they are closed? It's 435pm sign says 5pm is closing time. I'm not rich and an barely scraping g by in life and an Uber just isn't an option so I don't turn the car off until Saturday. I called the number numerous times and all they could say was sorry. This is unacceptable they need som e one who can take care of This stuff in the off hours! I have to work I have a family to feed and to hear sorry is so irresponsible and ridiculous from company that is supposed to keep the roads safe! I pay $125+ for the service and I keep getting junk! Now the whole bottom half came off cmon now. So now I have to.pay a tow truck to get it there Monday plus I'm careless for.2 days! Guardian needs to do more were talking about a person's livelihood here Plus I ended up having to.miss work anyways for the cheap defective device they installed this time! Sounds like a lawsuit to.me.

The local franchise is great - the issue is with the device programming / firmware. When the device was first installed in December, all was as anticipated. A few months in, I started receiving Errors Codes. The unit would display "Low Battery". I was concerned about parasitic draw from the Guardian System. I went to the local franchise and they replaced the handset. Two weeks ago, coming back form picking up fast food, and, apparently, now that it is warmer, the unit does not recognize that the car has started, (local franchise tech informed me of a threshold voltage being 13.8) So, I mistakenly assumed I had an alternator problem, Two trips to my auto mechanic to find out that the Mercedes running voltage specification is 13.5 volts, and they would not replace an alternator that was working properly. SO now I've spent almost $300 on a battery for this unit. The unit shut downs and reboots requesting a blow - goes to "Start Engine" and never gets to "Drive Safely" before cycling all over as if i just got in the car, a mile down the road. This process sometimes happens three or four times, before I get a "Drive Safely" Graphic. Then there's the other firmware issue - the device no longer 1) displays a box around the Pass Checkmark, 2) No longer chimes when switching to "Drive Safely" 3) Doesn't initiate the internal "knocker" if the radio / ambient noise is too loud and I don't hear the first "blow" chime for a rolling retest like it did in the first thirty days of use.

Luis, the tall guy, helped me twice. Both times he delivered excellent service and very friendly! His knowledge was key! I appreciate the legendary 5 star customer service! Thank you, Luis and God bless you!!

Genuinely awful experience. From the installation through Guardian, to the customer service to making sure they are complying with the DMV. Absolutely no accountability. Guardian has been without a doubt, the worst part of the DUI process for me. I received different answers every single time I called looking for assistance.