DEI Rattler 300 bypass function

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=15702
Printed Date: July 12, 2025 at 4:37 AM

Topic: DEI Rattler 300 bypass function

Posted By: Duckfoot
Subject: DEI Rattler 300 bypass function
Date Posted: July 01, 2003 at 6:47 AM

I have recently installed a DEI Rattler 300 alarm system in my '93 Chevrolet truck. Everything works - except that I can not arm the system with the ignition on, all the other triggers will set the bypass function properly.

Does the Rattler allow the ignition bypass function?
If so, how do I get it to work?

Replies:

Posted By: CutDog504
Date Posted: July 01, 2003 at 10:47 AM

You cant arm it with the ingnition on, its not made to do that.

Posted By: Duckfoot
Date Posted: July 01, 2003 at 5:41 PM

Darn, I have an older DEI Python 1000 in another car and it does allow this. The two models seemed so similar that I was surprised when it did not work.

It is a good feature to have, start the car in winter,
set the alarm and go back in the house for a cup of coffee while the windows defrost.

Thank you.

Posted By: CutDog504
Date Posted: July 01, 2003 at 5:50 PM

I know what you mean, pretty much all the vipers and pythons have that feature, but not the rattler.

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