You don’t. Moving on...

And why is that? Because you don’t know how and you therefore decided???

In the meantime, thanks for trying to be helpful elgyqc. While the post wasn’t directly on topic the poster was a pro in the 12V industry, exactly the kind of guy who would understand what I’m talking about and might know the answer. So I PMd him and hope that he is still around these parts.

In case anybody pops by this thread and does NOT want to talk about having a summer car, living in Texas, car theft histrionics, or the inappropriateness of remote starters in manual transmission vehicles, my technical questions remain.

Specifically:

1) Does anybody know how to install DEI 556U in 2001 Boxster? Eg, is the wiring Euro style, non-euro, or some other way (there’s a VAG tech bulletin from DEI)? Which transponder wire is cut?

2) Can the factory transponder ring be directly powered during crank (and ACC) to read the required key (if inserted in the ignition cylinder).

Wow. You must really be a ton of fun at parties.

Sent from my SM-G970U using Tapatalk

I was going to offer to help until I saw how rude you were being to JFP. He’s a valuable member and I think you could have approached it better.

Good luck! :D

.

The transmitter antenna in the 986 is a passive component.

I think that should answer your initial "hacking the immobilizer system" question.

Yes, that info may help. If it’s just a passive antenna does that = there’s no reason I can’t just directly power it via relay? (that’s the core of the issue ... I’m not trying to “hack the immobilizer”; instead I am trying to enable/power the factory transponder antenna ON to look for a pill on remote start).

Is the passive antenna powered with constant 12V positive? And would it matter which side (which of the two wires) was powered (via relay)?

I been needing a new password for my computer at work. "Cluelessthe****************************1" At least 15 letters and easy to remember.

WTF. Really?? Was that necessary?

90% of the replies in this thread have not been necessary.

Make that 95% . . . . . . .

:p

97% now. :rolleyes:

as mentioned the antenna itself is passive, but it is connected to the immobilizer module. the immobilizer module is powered by the orange wire coming from the ignition switch.
here is a diagram of the immobilizer module. http://986forum.com/forums/uploads02/11568227407.jpg

Easiest solution - buy a second key and have a dealer or indie program it for your car.

I am not sure I should get involved in this, but I think I might know how a remote start could work. Basically, you would need another programmed transponder. That would be put in another reader coil in the remote start that would be relayed to the coil reading module instead of the original coil when the remote start was activated via its transmitter. So, unless the remote start transmitter was used, it would function normally. If the remote start was used, you would still need the mechanical key to unlock the column and drive the car. I would assume there are interlocks for the parking brake and some sort of neutral safety mechanism.

So, the only real danger of cars being stolen would be by having that extra transponder in the car that is used by the remote start. You would need to know it has the remote start and where it is, then remove the transponder and put it in a key that would work in the lock so you could use it as a normal key. If the remote start's transponder was glued in, it would be extremely difficult to do this, to the point I would say the risk would be negligible.

As for the remote start, it would need to energize the 86s terminal when switched over to the remote start transponder. That would make the coil reader module read the transponder and start the transponder authentication process. Once that is done, you energize the ignition and then starter.

All that said, I have never installed one of the devices that is mentioned, so I have no idea how the configuration needs to be set up to get it to work or if the device in question can do this, but I would bet it can. I personally wouldn't put one in my Boxster, but YMMV.

These are all different points of view and opinions. I can't agree with any, but we do have a stubborn one.