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      09-19-2012, 03:10 PM   #14
Mike Benvo
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Drives: Harrop SC M3 / E46 M3 / 7Turbo
Join Date: Apr 2008
Location: SoCal

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Garage List
2008 BMW M3  [5.00]
1990 BMW 735i Turbo  [5.00]
2004 BMW M3  [0.00]
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Quote:
Originally Posted by M3PO View Post
No idiot light on the dash or message in iDrive? Is it possible that some of us have this issue and don't know it? I have 53k miles...
Yes, quite possible.

Many cars come in with faults and have no SES light.

The SES light will only illuminate if something continues to reoccur, or if it's something more serious. There are also many faults that may not trigger the light.

As an example, when my idle control valve was bad, the car misfired in all eight cylinders and had 9 fault codes stored (one for each cylinder + a multiple misfire code). No warnings, and this is with the latest stock software. You should be able to read any existing fault codes with your tuning cable
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