Master key cannot start engine - BMW Forum -

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post #1 of 2 (permalink) Old 03-30-2012, 04:51 AM Thread Starter
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Master key cannot start engine

Hello all, I am new to BMW, bought a used 2001 E46 two weeks ago, its a 325xi.
Had just serviced and replaced d MAF, it runs fine, but I think it could be better.

I currently have issue with d master key not starting d car, only d spare key. The remote sensors work on d master key. It's there anything I need do to make d master key start d car?

The color code on d master key is blue.


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post #2 of 2 (permalink) Old 03-30-2012, 09:52 AM
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The keys have a chip in them which sends a unique code to the ignition. If that code using correct the ignition won't start. It's called the EWS, but is known as the Drive Away Protection System. I would take the key to the dealer and see if they can ensure the chip is functioning. - Alberta based BMW Community
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