Question about 2003 Porsche Cayenne

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Would you know how to deactivate the immobiliser - the key battery has died and is stuck in the ignition! many thanks

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Sorry dealer only for the immobilisor ,if i knew how to de activate it so would all teh car thieves ,hence its encrypted ,The key should still come out of the ignition though i would have thought ?? but i could be wrong here but i think you may have a fault with the actual lock barrel ,

Posted on Dec 30, 2010

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Posted on Jan 02, 2017

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I changed my car battery in a Fiat Punto and now the car refuses to start. It appears the immoboliser has activated


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Hello there,

Your Immobiliser has activated the alarm, you must deactivate the immobiliser to deactivate the alarm. go into the car (even if siren is wailing and your neighbours are nosy) close the door and put key in the ignition, turn key to ACC position. Hold down unlock button till you see indicators flash once. Remove keys and get out of the vehicle. Try unlocking and locking. This should be reset.

Cheers Buckaroo,
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1 Answer

1997 Discovery 300 tdi. Locked the car with the handset, but when i tried to open it would not. I had to open with key, but the car stays immobilised.Key symbol flashes on dash as soon as i turn key.New...


NOTE: No synchronization required after battery replacement.
How - 1996

NOTE: Remote control contains a transponder and MUST be attached to the same ring as the ignition key.
Unlock the vehicle using the key. Deactivate alarm.
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