Old Feb 3, 2021 | 12:29 AM
  #240 (permalink)  
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sk8erjosh09
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Joined: May 2011
Posts: 2,192
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From: Ridgecrest, CA
Default Re: Let's discuss the key fob transponder chip(s)

Originally Posted by KeithTexas
Great information. Thanks sk8erjosh09.
I know you're busy figuring out how to program the SKREEM, etc., but I've got three quick questions for you if you have time to reply:
When I bought my Crossfire a few years ago, I received two working keys and fobs. The Crossfire also had a Clifford or Viper (?) remote start. I received no instructions, schematics, or anything to help me with the remote start.
1. So, is it correct that my two original working keys are likely programmed onto key track 1 and key track 2? Is that correct? Both keys work to start the car. Both key fobs work to lock/unlock the doors. Both keys require two presses to lock/unlock both doors.
2. Did the after-market remote start people program the Viper fob onto a different key track? That fob will also unlock and lock the doors. It locks/unlocks on a single press. So, was it specially programmed for my SKREEM?
3. I'm guessing that there is no transponder inside the Viper fob. Correct?? It is used to just lock/unlock and perform the remote start setup which will start the key without a key in it. However, the instructions that I've found for the Viper remote start fob says you have to enter the running car (remote started) and insert your working key into the car's key slot to be able to drive the car away after performing a remote start. That must mean there is no transponder in the remote start fob. But, do you think the remote start people are smart enough to program a transponder, too? Or is that a completely higher level programming effort?
1. Yes, more than likely.
2. That one is more difficult to answer but it's probably sync'd to track 3.
3. There more than likely isn't a transponder inside the Viper fob. I don't see why they would. The transponder only works inside the transponder ring that's attached to the ignition. If you aren't inserting the Viper fob then it doesn't have one.

I really don't know anything about the aftermarket alarm/button start systems. I have no clue how they would get it to even start without a transponder inside the ring.
 
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