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So I replaced the overhead console as part of the dome light repair - I got one off of Ebay and it was in better shape than my original one so I put it on. The main difference is that the one I bought has a homelink system installed. It doesn't seem to want to work for me - the LED doesn't light under any circumstances. I've read in other Porsche model forums that the PIWIS can do a reset and re-activate it (in cars that had it installed from the factory). Does this mean that I have to go to the dealer to unlock the use of this thing? I'm wondering how the homelink retrofit kit from Porsche works then. Is there a way to just hardwire the thing in without having the PCM "turn it on"?

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There is a TSB that outlines the process of doing this.

It does say that you need a PWIS tester. But I don't see why you should.

The remotes should all be self contained.

I'm about to do that same thing next week so let me know what happens.


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Actually I got impatient and figured out where the main power wire was on the 3-pin connector that goes to the buttons. I ran the same key-on power that I have my V1 radar detector on and it works fine. I did cut the wire. The instructions look to be a cleaner way to do it. The thing with the TSB is that on the 2004 like mine, it will get power to the switches by pressing on the brake pedal (when the CAN circuit power to modules comes on). If it took the key-on I'd feel safer on the nights my car has to sit outside. It'd be easy for someone to smash a window and then manage to operate the door opener. Maybe I'm just paranoid :eek: . I took pics and will post later on where I made the splice.

But this is a real cheap way to add homelink. Just find a used overhead console with it in there and pop it in with just a little work.

Edited by the head
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I took a look at it tonight. Looks like i can push out the pin and then splice it like the TI says. But as with you, I would rather have the remote only working when the key is in the ignition.

Did you have a spare connector to slide in the empty slot or did you rob one from your old overhead unit?

My new overhead panel also has the parking assist. I think it will throw a code because i don't have any sensors. Might just be better off disconnecting the plug.

Edited by seafeye
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  • 2 weeks later...

My 2005 CTT doesn't have homelink either.

From reading above, am I right that I can just buy a used roof console from that famous auction site, install it and away I go - I'm asuming from this that the relevant wiring harness is already present, just not currently connected to anything in my car?

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