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#1
01-11-2009, 03:24 PM
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X5 Key Codes - how does it work?
I always wondered about this... BMW says that each time you use the key to turn the car on, a new "code" is sent to the key so that it would know to start the car with that new code next time the car is started. This is a "security feature" that prevents "code grabbing"... Ok, that makes sense...
But how does my wife's key know this same code after my key supposedly got a "new code" during starting?
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2004 Porsche 911 C4S X51, Seal Grey / Black 2006 Porsche Boxster S, Guards Red / Sand Beige 2008 BMW X5 4.8i, Black Sapphire / Saddle Brown 2001 Audi A4 1.8tq, Laser Red / Black, APR Stage 2, H&R Coilovers 2002 Suzuki GSX600 Katana, Yellow 
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#2
01-11-2009, 04:42 PM
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Because there is a separate chanel and code set for each key.
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 Fastbuck 2009 F01 7 Series 3.0D SE Saphire Black/ Oyster 2008 E83 X3 2.0D SE Montego Blue/ Black 2007 E70 X5 3.0D SE Space Grey/ Beige - SOLD 2006 Land Rover Freelander Sport TD4 Zambezi Silver/Black - SOLD 2005 W203 C200K Sports Coupe Jasper Blue/Artico Black - SOLD 2004 W211 E320 CDI Avantgarde Brilliant Silver/Alpaca Grey - SOLD 2001 E39 530i SE Crystal Green/ Beige - SOLD
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#3
01-12-2009, 10:31 AM
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Ahhh....thanks!
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2004 Porsche 911 C4S X51, Seal Grey / Black 2006 Porsche Boxster S, Guards Red / Sand Beige 2008 BMW X5 4.8i, Black Sapphire / Saddle Brown 2001 Audi A4 1.8tq, Laser Red / Black, APR Stage 2, H&R Coilovers 2002 Suzuki GSX600 Katana, Yellow
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