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Old 11-28-2017, 05:13 PM   #1
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Originally Posted by boxfix View Post
you can also take the "grain of rice" out of the good key and glue and tape it to the inside of the rubber boot around the ignition switch. Then any properly cut key will start the 986.

As you now know the remote part of the key is a separate issue. You can go the aftermarket route and all will work well.....both starting and remote lock unlock.
Has anybody had an issue with taping the transponder to the key barrel? They locksmith who cut my key said that he'd heard of folks having an issue with the idea that caused the immobilizer to lock up. Thought about doing it but want to make sure I don't shoot myself in the foot.
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Old 11-28-2017, 06:01 PM   #2
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Has anybody had an issue with taping the transponder to the key barrel?
I have done it plenty of times and none of the cars have had a problem. My wife gets the Porsche badged keys and mine are Audi & VW flip keys.
I'm curious now... tomorrow, I'll start up one of the cars, then pull the transponder off and see if it stops running, has an IMS failure, or explodes. -Will report back Wednesday evening if I survive.
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Old 11-28-2017, 06:10 PM   #3
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Has anybody had an issue with taping the transponder to the key barrel? They locksmith who cut my key said that he'd heard of folks having an issue with the idea that caused the immobilizer to lock up. Thought about doing it but want to make sure I don't shoot myself in the foot.
The "key barrel"?? I did not say that.

The "grain or rice" needs to be near the immobilizer antenna. Installing it on the rubber boot does that.
The locksmith who cut my keys told me that the Sheriff department and the CHP Take the immobilizer out of the keys on their new cars and SUVs and install near the antenna in the car. They need 3+ sets of key and they are not about to buy key with expensive immobilizers in them.
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Last edited by boxfix; 11-28-2017 at 06:29 PM.
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Old 11-29-2017, 02:14 PM   #4
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The "key barrel"?? I did not say that.

The "grain or rice" needs to be near the immobilizer antenna. Installing it on the rubber boot does that.
The locksmith who cut my keys told me that the Sheriff department and the CHP Take the immobilizer out of the keys on their new cars and SUVs and install near the antenna in the car. They need 3+ sets of key and they are not about to buy key with expensive immobilizers in them.
Dude, relax. Never said you mentioned the key barrel. I mentioned it. We’re talking same general area. I’ve heard of folks purging the pill on the barrel as opposed to the rubber surround.
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Old 11-29-2017, 02:48 PM   #5
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Has anybody had an issue with taping the transponder to the key barrel rubber surround? ...
I did a quick test today using my '01 Tiptronic. The transponder is stuck on the rubber surround just to the right of the connection for the coil.
  • I pulled off the transponder and tried to start the car: No crank.
  • I put the transponder back and started the car: Normal start.
  • While it was running I moved the transponder away: Kept running, no indication of a problem.
  • My current curiosity is: With no transponder, can you roll the car, put it in gear, pop the clutch and drive it away? Maybe another day on my '99.
Here's the DIY I made a while back: http://986forum.com/forums/diy-project-guides/56448-diy-making-cheap-spare-keys.html

Update:
I just tried the experiment with my manual transmission '99.
  • Set-up - The transponder is still in the normal key, but I also have a key which has been cut, without transponder.
  • Procedure - I started the car with the no-transponder key by holding the 'good' key close by. I then set the 'good' key on the passenger seat and drove the car around the block. I stopped at the top of a gentle slope and turned the key off. Rolling the car forward, I turned the key on and popped the clutch in 2nd gear. No start and Check Engine Light came on. I started the car with the 'good' key and returned to the slope. With the good key and the same procedure, it started right up.
  • Conclusion - The immobilizer does not simply disable the starter. There is logic in the DME/ECU that will prevent a start, but allows a running engine to continue running.

356Guy, did you resolve your question with PW's http://986forum.com/forums/diy-project-guides/56773-3rd-party-keyless-entry-diy-why-not.html ?
Not the Bergville specifically, but many of these kits have the same internals.
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Last edited by 78F350; 11-29-2017 at 05:30 PM.
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