Factory car alarm 1984, Porsche 911 option

[MC-911]

Which years did Porsche offer the factory option car alarm with the key switch in the drivers door on the 911 before 1989?

[scanner-1]

I have that alarm on my ‘86 Targa.

[MC-911]

6 hours ago, scanner-1 said:

I have that alarm on my ‘86 Targa.

Thanks, I haven’t seen much online about them and the Porsche PET only shows this factory car alarm for 1986.

I also haven’t seen anything on YouTube.

 

[scanner-1]

It works as you might expect—open door, turn key, close door to set. 
The real trick is (and maybe this is just mine) when you open the door, there is not enough time delay to get the key in and disarm the alarm, so I always set off the alarm when getting back in!

[MC-911]

32 minutes ago, scanner-1 said:

It works as you might expect—open door, turn key, close door to set. 
The real trick is (and maybe this is just mine) when you open the door, there is not enough time delay to get the key in and disarm the alarm, so I always set off the alarm when getting back in!

After I removed it, rebuilt it, cleaned it and had a key made, since the car did not come with a key, mine seems to work good although I’m curious how long it was made and if it had other problems over time like electrical issues. I found that I have enough room to turn it off if I open the door carefully.

I’m thinking that it may have only been available for a short time before the next generation alarm (Immobilizer?) replaced it.

My 1980 911 Targa did not have that alarm option so I like it on my 1984 Coupe even though I don’t use it much.