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Discussion Starter #1
I'm dumb founded with the LP640's immobilizer. It beeps for no reason, doesn't beep when you expect it to. If I disarm the car while sitting inside it wouldn't start until I get out. I'm pressing the buttons randomly, the car yells at me randomly...hell, I think I have a better grasp at understanding women than this immobilizer.
 

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“ If I disarm the car while sitting inside it wouldn't start until I get out.”

Hmmmm.... that makes me think you have an issue with the starter not the alarm system.
 

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#@$&! Can someone explain how does the immobilizer works?

In a word NO even after 11 years of ownership.
 

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Discussion Starter #7
“ If I disarm the car while sitting inside it wouldn't start until I get out.”

Hmmmm.... that makes me think you have an issue with the starter not the alarm system.
I don't know. I had to open the door, re close it and the car will start up. :confused:


I like how it just randomly beeps minutes after shutting it off and leaving it unlocked.
In a word NO even after 11 years of ownership.
Luigi must had some good prosecco the night before he built our cars...
 

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I find it confusing sometimes when I stop the car and leave the key in the ignition. Trying to restart it can get tense once an audience has built up... :) It looks like the immobiliser, alarm, lock, starter system has got out of sync with each other so pressing the button activates some but not all the elements.

So if I have stopped the engine and not retracted the key, I find the best way to restart is to take the key out, pause a few seconds, put the key back in, turn it and then hit the button. Btw, we are talking pre-LP arent we?
 

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Mine..

1. simply locks and unlocks from outside the vehicle doors, frunk and bonnet closed. Not always on the first try or so it seems.

2. Inside, need to unlock button within 30 seconds of key in and start.

3. With car off, doors open. Front /rear parking lights go on, hit the unlock button and lights go off. Good for not draining battery while cleaning m maintenance.

I agree immobilizer is fuzzy but I guees it's probably running a slow cpu with multiple feedbacks. Takes time and a few tries. Italian
 

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Discussion Starter #10
Btw, we are talking pre-LP arent we?
Nope. Mine is a LP640...

Mine..

1. simply locks and unlocks from outside the vehicle doors, frunk and bonnet closed. Not always on the first try or so it seems.

2. Inside, need to unlock button within 30 seconds of key in and start.

3. With car off, doors open. Front /rear parking lights go on, hit the unlock button and lights go off. Good for not draining battery while cleaning m maintenance.

I agree immobilizer is fuzzy but I guees it's probably running a slow cpu with multiple feedbacks. Takes time and a few tries. Italian
Thanks! This is a good guide.
 

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These instructions came with my 2008 LP640.
Have fun!
Use at your own risk!!
Any idea where the siren is as mine has stopped working (no chirp on lock or unlock) I assume only one siren for both chirp and alarm function?
The car will lock and arm (turn signals flash and the red led in the center console flashes).
 

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Sometimes you need to lock and unlock the car again before starting car. I think it's if you unlock the car and wait too long before starting it.
 
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