2005-2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.

problem with Viper alarm install

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Old Jul 5, 2008 | 12:26 PM
  #11  
phatcat's Avatar
phatcat
1st Gear Member
 
Joined: Dec 2007
Posts: 65
From: Texas
Default RE: problem with Viper alarm install

I've had the same thing happen to me but only twice, funny thing is that when i arm the factory alarm the horn never goes off. I didnt even know i had a factory alarm i though it was just a keyless entry system.
Old Mar 1, 2022 | 11:55 PM
  #12  
Coccothow's Avatar
Coccothow
 
Joined: Mar 2022
Posts: 1
From: Louisiana
Talking Don’t need both fobs

Originally Posted by daz72
not on crack (I wish ;-)
Irgnation What you describe is one way to do the bypass, where the module 'eats' one of your keys. That's simply so that key's chip is always in the car, which allows any matching (chipped or not) key to start it, and makes life easier for the remote start unit.

BUT my system uses a newer type ofmodule, that uses both the chipped keys to program but does not need to keep one permanently inside it to function. That way I can keep using both keys.

The problem is not with that - the remote start works fine like I said. Problem is I don't know how the two security systems should properly interact for simple alarm functionality, and clearly my shop doesn't either. Of course the factory alarm has to be disabled, but question is is it permanently disabled or only when the Viper is armed

and I know they're all DEI - shop have called DEI about 10 times for support.
you cannot have both your factory fob and the vipers fob near one another. Put the open ones up away from the car I think it’s at least 15 feet away. Then your viper fob should control the factory alarm on its own it’s designed to integrate with the pats not disable , but as long as it’s sensing both fobs it doesn’t know which one s right because it’s receiving two separate signals from two separate modules. Also did thye program your viper fobs to your car? You do it the same way you do the factory ones it’s not just the module it has to be programmed to, your new viper fob is like another metal key it has to be programmed to the pats as well so that pats knows that the viper fob is authorized to give the commands lol
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