pp000830

Document updated 6/23/2017
Dear Rennlisters,
Below is an easy to follow step by step chart to deactivate the ignition
immobilizer and add remote key fobs to your 1995 on 993 (up to 4 fobs total).
It makes the process easier to follow when you are in the car actually going
through the process.

https://993servicerepair.blogspot.co...ming-made.html

As always use my posting information at your own risk!

Andy

jo-hans

Thanks! My car only came with one fob. Several years ago I bought a second, an identical OEM switchblade one on Ebay and still need to program it.

jo-hans

Just followed your instructions and had success after using the correct four digit code instead of the four digit key code on that same card.

Thanks a bunch!

gmorat

Does the keyfob need to be reprogrammed if you are taking the working circuit board from a switchblade style one and putting it directly into this one? Is that only if you are programming a new key from scratch?

Thks

G

TMc993

If you are moving the electronic "guts" from one type of plastic fob "shell" to another, there is no need to reprogram the fob...

96PCarrera993mg

Where do you find the Immobilizer Codes?

Rick-A-Shay

Immobilizer Codes are obtained from a Porsche Dealer.

speyer911

Still working up courage to try, but I think my lights are double blinking so maybe a no go. Is it possible to mess up the working fob by trying to program a new one?

rlme36

Gave it a go yesterday, could not get the system into programming mode. I am sure its operator error as I must have turned the ignition switch too far and had the horn alarm go off a couple of times. Will attempt again today

pp000830

If the light on the door is double blinking first check you battery voltage it should be 12.5+ volts at rest and 13.5+ running. If the voltage checks out make sure the doors are closed and the dome light extinguishes as if any of the lights including the truck light stays on because of a closure switch alignment issue the lights won't go out and I beleive it does not allow the immobalizer to go into "primed' state
. As a last resort disconnect your battery for ten or more seconds, reconnect and see if it clears the double blinking. If not you will need to sort out an electrical issue with your alarm system. I have never had the horn alarm go off during the programming steps.
Andy :-)

rlme36

Thanks for the reply. The alarm system seems to arm fine. no double blinking, car is on a trickle charger so I would think the battery is fine. When doc says, wait 3 mins for the alarm to prime are we saying for the alarm to set itself and the LED starts blinking again? and that's when you start the first step?

thanks for the help. this is the kind of crap that drives me nuts.

rob

JonSnow83

This should be a sticky thread. So much better than the manual!

rlme36

I finally figured out my problem with programming my new remote, figured I'd share here in case someone else is as dumb as me.

there was a thread about LED bulbs, which I have in the front trunk light, didn't seem to be an issue. Had the interior lights turned off, moved them to on. No idea if that was a help or not. But closing the engine lid was sure helpful, doh!. I always leave mine up after I drive the car and tend to keep it open cause I am lazy. Well that sucker needs to be closed for it to work and it did like a charm.

rob

pp000830

Attached document updated 6/23/2017

Good catch, Latest version with note to address your finding attached.
Updated programming instructions:

pp000830

Just learned that the code to program the immobilizer is the last 4 digits of the immobilizer serial number