Alarm key fob program problem.
06-14-2019, 03:04 AM
#31
Yes, an intermittent micro-switch on the ignition switch that senses the key in the ignition switch can cause such a problem and prevent coding of remotes.
06-14-2019, 04:40 PM
#34
Programming a 993 immobilizer is very simple:
1. Open door, insert key, and turn key to run mode. Immobilizer light should come on.
2. After about 15 seconds, the light should go out. Turn key off then on (cycle key).
3. After about 15 seconds, the light will start to flash. Cycle the key to enter each of the four digits. Wait about a second between each digit.
4. If the code is correct, the light will begin to flash. Depress the button on each of remotes.
5. Turn the key off, exit the vehicle, close the door, and test each remote.
If step #3 doesn't occur, the ignition switch is bad. The immobilizer then needs to be programmed externally. Many who repair Porsche ECUs can do this.
1. Open door, insert key, and turn key to run mode. Immobilizer light should come on.
2. After about 15 seconds, the light should go out. Turn key off then on (cycle key).
3. After about 15 seconds, the light will start to flash. Cycle the key to enter each of the four digits. Wait about a second between each digit.
4. If the code is correct, the light will begin to flash. Depress the button on each of remotes.
5. Turn the key off, exit the vehicle, close the door, and test each remote.
If step #3 doesn't occur, the ignition switch is bad. The immobilizer then needs to be programmed externally. Many who repair Porsche ECUs can do this.