Customer Ratings & Reviews

Awsome!

Directed 556U Immobilizer works like a charm! I turn heads every time I remote start my car and one one is inside!

It's a must have for connivance. Cool your car on a HOT day or HEAT it up on a cold night, your car is at the perfect climate every time.

Great Product

Had no problems with installing unit, worked fine from the get go. Would buy again.

STILL KICKING!!

This bypass is so old school yet still works, OLD FAITHFUL!!!!

Great price, great product for my Avital 4400 in 01 Audi A6

Flawless with zero failures since installed one month ago. I was able to locate the factory wiring to tap into on my A6 instead of using the suppliedring. Good clear instructions. Does what it is supposed to do, not much more to ask for!

None Better!

This works just like it is supposed to. I have used several of them without any issues. I would recommend to anyone that needs this item.

good deal!

Works every time. Easy to install and the the size is small enought to hide.

Can always count on DEI

The first alarms I learned how to install we're viper, python, avital, etc. all dei products. So naturally it was DEI modules I would use for oem interface. This particular module is an oldie, but seeing as my car is an oldie (2000 3 series BMW ) I found myself in need of this exact module. What I really like about the 556u is that is has more than one option as far as connectivity and oem interfacing goes. This things work like it shoul and is really inexpensive compared to newer style transponder bypass modules.

Works great

I bought this for a alarm to start my car. It work like a champ I would but this again.

2003ford f-150

i bought this cuz my truck didn't wanna turn on and now It does i love this product

good product.

It is very good product, easy to install, compatible with a lot of cars and works perfect.

good product!!

Good product but didnt need it!!!

Awesome!

For vehicles that aren't controlled completely by data, these bypass kits are amazing. The 556U is hands down the best "hide a key" style unit you're going to get. I recommend it every time and as a professional installer, I use it when possible.

Simple bypass module

I've used this module on a few different vehicles and it has always worked. This time I installed it in a 2006 Town and Country van with a remote starter also purchased from Sonic. The only tricky part is getting the antenna ring located properly around the ignition ring. Sonic's shipping and tech support have always been great!