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Synchronizing Door Lock Remote Control


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I own a 1999 Boxster. For an unknown reason it is impossible to (un)lock the doors or the trunk with the remote control although it worked perfectly until some days ago.

The battery is OK and when I push one of the buttons then the red signal light in the key holder starts flashing but nothing happens.

My spare key works very well so I am pretty sure that the central door locking computer is OK .

I think the first key is not longer recognized by the central door locking computer.

1. Is there any possibility to 'synchronize' the key with the central door locking computer without using the special Porsche tooling (PST2) and how can it be done ?

Would appreciate your experiences / advice.

Alfred

Edited by privateselling
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Change the battery in the key because it could be weak enough not to transmit the signal but strong enough to activate the LED cicuit in the key. They only cost about $5 at any drug store that sells watch batteries if the dealer doesn't have one.

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You might have guessed that I already replaced the battery today (and a good specimen indeed since I checked the voltage before installing it and it indicated a 3,2V where the 'old one' indicated 2,9 V).

I think/hope the base code is still OK and still stored in the key I guess most probably the rolling code has gone.

That's why I wonder if there might be any synchronisation method.

Would appreciate further suggestions.

Alfred

Edited by privateselling
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My guess is that you have a remote that has gone bad.

I saw something in the shop manual. It says that if the remote is operated more than 256 times but less than 1024 times and the signal does not reach the receiver (like the car battery is disconnected or you are out of range) then the car will not recognise the remote.

If this has happened then you put the key in and switch on the ignition. Switch off ignition and remove key. Then push the button on the key within 6 seconds after it has been removed. Porsche calls this re-synchronisation.

I assume you can still start the car with the remote.

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