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My 99 996 has started beeping twice when I press the key fob.


It locks and then immediately unlocks.


Also when opening the drivers side door, the window goes down when handle is pulled but goes straight back up when the handle is released. So the window obstructs the door closing.


I have the following Durametric Alarm errors:

lookup.gif 11
Voltage failure during alarm
Status: not present
Frequency counter: 1
lookup.gif 10
Voltage failure at terminal 30
with alarm system active
Status: not present
Frequency counter: 1
lookup.gif 46
Control locking synchronization

Status: not present
Frequency counter: 2
lookup.gif 49
K lead

Status: not present
Frequency counter: 1
lookup.gif 21
W lead (DME immobilizer)

Status: not present
Frequency counter: 1


What's the best way to proceed with fixing this?




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Hate to say it but it is probably your drivers side door latch mechanism.  There are internal microswitches that create the exact symptoms that you have.   I recently had to replace my drivers side door latch mechanism because it was getting to the point the door would not unlock with the key.  But I figured it was now 21 years old, so I replaced with a new OE Porsche door latch mechanism.  Now works perfectly.


That being said, there is another microswitch on the door handle that controls the window drop when opening the door with the outside handle.  Also well known to go bad and fairly easy to replace once the door card is off.  I think I would start there.

Edited by DBJoe996
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