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      10-17-2012, 04:18 PM   #92
Mike Benvo
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Drives: 08 E90 M3 / 400whp Turbo 7
Join Date: Apr 2008
Location: SoCal

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1990 BMW 735i Turbo  [5.00]
2004 BMW M3  [0.00]
2008 BMW M3  [5.00]
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Quote:
Originally Posted by kardboard View Post
This is exactly what I was told when I bought my 2010 135i by my sales rep. He told me, if I remember correctly, that the two keys I received were the only two keys that would start the car. If I happened to lose both keys, they would have to replace the ECU (I assume) and would cost an arm and a leg.

Any truth to this? I bought my car new in January of 2010 from a BMW dealership.
100% wrong.

You can lose both keys and buy two new keys and have them synced to the car.

The CAS unit never has to be replaced unless there is a problem with it, which happens but is very rare (older versions of Program are known to cause module damage during update).
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Last edited by Mike Benvo; 10-17-2012 at 04:31 PM.
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