Upgrade PA 1000 Immobilizer

[hanhams81]

My car is fitted with the original PA 1000 immobilizer and an after market Clifford Arrow central locking/alarm system. One Clifford remote is broken and the immobilizer key is falling apart. Time to rethink the systems perhaps, especially as both are 19 years old. I have in mind replacing both by upgrading to Porsche PA 2000 system only. Having said that it is old hat as well. Has anyone had experience of upgrading this way and is it satisfactory. Operationally it will be less complicated having only a remote to use. I currently use a remote and immobilizer key. Then there is the option of replacing the lot with an up to date system. Not knowing too much about who does what best I will welcome advice. Thanks.
Richard

 

[Shane Hodges]

Richard,

When I bought my car the dealership upgraded the alarm to the PA2000. They left the old PA1000 immobiliser in situ as they said it was easier to do so. This does mean that I have both the remote fob and the small immobiliser key, but I have had no problems with the system at all over the last 13 years.

Shane.

 

[Stewart Rix]

PA1000 and PA2000 look the same - both have a remote to alarm/disarm. I believe it was a PA100 that used the toggle pushed into the slot in the dash.

 

[JB 3.2]

I had my alarm upgraded last week by H&P, it unlocks the doors with the fob and I no longer need the separate plug in immobiliser. While I was there Jim did say that the older immobiliser which requires the push in key was the most secure.

My original H&P alarm had been removed by a previous owner and replaced by a more modern Sigma unit which was proving to be temperamental.

 

[colt]

The pa 100 is the early remote locking system seen fitted to 928/944 and 964, the pa1000 is the thatcham cat 1 alarm and immobiliser and was replaced by the pa2000 system, I think porsche just call the immobiliser (the usb like blade type) "porsche immobiliser and is thatcham cat2 compliant, usually the battery back up in the siren (found in the engine room) fails and leads to erratic battery draining and false alarms, usally the wiring is good and you can get an exchange main board complete with remotes and master from hamilton and palmer (in london) that you can just put in to your existing case (under the seat), and a new siren fixes many old systems, unfortunatly you cannot just plug a pa2000 in to the loom from a 1000 as the pin asignment is different. Having said that if the alarm was good enough back then then its still up to the job of slowing down thieves now with a new board in it? so changing to a pa2000 is not a big upgrade as such.
christian.............