Davis Pan

I have a 1995 993 (manufacture date in 1995) and lost my only working fob. I've done a search and read all the relevant threads, to no avail. I can't even bypass the immobilizer to start the car. When I use the key to do a unlock-lock-unlock sequence, the alarm sounds and doesn't go off so I can't proceed with the procedure. I learned the door doesn't unlock with the key unless you pull the door-open trigger. If I do the unlock-lock-unlock while pulling the trigger, the alarm doesn't sound, but it goes off when I open the door. If I do the unlock-lock-unlock while not pulling the trigger, the alarm goes off as soon as I do the first unlock, plus the door remains locked. Has anyone been through this before? If so, can you please offer some tips on starting the car?

By the way, the door blinker does a double blink. That may be ok because it is correctly indicating that the alarm has been triggered.

kreeshp

Good luck but I'd be surprised if anyone posts help publicly. Any advice given to help bypass the immobilizer would help thieves steal an already highly stolen vehicle.

Your best bet may be to contact your Porsche dealer and maybe they can help after you prove ownership of the car.

Steve Weiner-Rennsport Systems

Thats the best advice at this moment. You need a replacement remote control in order to disable the alarm, not to mention the Immobilizer (which can be disabled, after the fact).

A dealer will be able to get a new one and program it for your car.

pp000830

Look at the procedure for when no fob is available:

Davis Pan

I'm very well aware of those instructions. The problem is I can't get past step 2; the alarm sounds, but much longer than "momentarily".

Davis Pan

I'm not sure I understand. Are you saying the dealer can get a new fob and program the FOB so it works for my car?

Otherwise I would have to get the car towed to the dealer so they can reprogram the immobilizer. I have 2 extra fobs, which I got with the car, but the previous owner never programmed the immobilizer to accept them. I have instructions on how to reprogram the immobilizer so it works for additional fobs, they don't seem to work in my case because I'm getting double links on the door LED.

C4SJOHN

Davis Pan, When you buy a new remote control unit, get two of them. Because the cost having the dealer reprogram your car to accept the new units will be the same for one or two controls.

Davis Pan

I probably wasn't clear: I already talked to the dealer, proved that I owned the car, and they gave me the 4 digit immobilizer code. The problem is the immobilizer instructions don't seem to work, maybe because of the double-blinking door LED. I'm not able to use the instructions printed in the owners manual to disable the immobilizer and start the car using that code.

If I understand some of the other posts correctly, the immobilizer seems to only disable the starter. Since I can get into the car and it is a manual transmission, maybe I can push start it? At least that way I can drive it to the dealer.

pp000830

It may be that you car is a pre 96 and so has an alternate programing process.

Davis Pan

The owner's manual that came with the car describes an almost identical procedure to start the car without a fob, by using a 4 digit immobilizer code. I'm pretty sure I'm not the first person to lose the last fob for their car. What did other people do, tow the car to a dealer?

fatmike

I went to a dealer. Got my immobilizer code. Turns out they gave me the wrong code. You see, there are multiple four digit codes associated with the car. They picked the wrong one.

Dealer's don't actually know what they are doing with these cars.

I'd go to a different dealer and try again.


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fatmike

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nine9six

...so there was no problem with your car before loosing the fob, correct?

I am trying to understand why the led is double blinking, if there was no prior issue?

A double blinking led indicates an issue with the alarm/immobilizer; otherwise it will reset itself in 3 mins., and go back to single blinks if there are no system issues.

The alarm being triggered is not considered an issue with the system.

coltj

Yes, the radio and immobilizer codes are different 4 digit #s. Worth a try to go back to a dealer. Ask for both codes.

mpruden

According to this post "the alarm system must pass its self check before you can program the key fob..."

I would recommend you address your "double flash" problem first. Based on the WSM, it says the double flash is caused by a fault condition. A Porsche tester (or UDT999) can give you a signal of what is causing the fault, whether it's a door, hood, glove box, radio, etc. Beyond that, a little trial and error my help you find the problem. Do you have an aftermarket radio?