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Old 07-26-2013, 11:15 AM   #9
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Join Date: Nov 2010
Location: Miami, Florida
Posts: 937
My Ride: M-3 Convertible
It's an indication that a fault code has been tripped, usually with regard to the emissions control systems. It should ALWAYS turn on when the key is in the pre-crank position, as this shows that the light is functioning. If it comes on or stays on when the engine is running you will need to have your codes read.

Last edited by DSilk56; 07-26-2013 at 11:15 AM.
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