Check out the realted link for some advice on how to reset the computer in your 2003 BMW 325I computer.
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You need a scan tool to plug into OBD port
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The brake warning light on a 2005 BMW 325i can be reset by connecting an OBD II code reader. It can view and clear error codes detected by the computer.
idle control valve
Depending on the year there may be anywhere from 1 to 8 computers in a 325i
this is a German car, there is no "reset" button,
65L i believe
dexron3