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Old 03-07-2013, 04:46 PM   #5
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 9,677
My Ride: '06 330CiC, '03 M5
Check engine light should come on when key is turned but before engine starts, during bulb check.

You can also run a cluster test as mentioned in the 4th link below in my signature.

Suggest you read this thread, you will see toward the end of the thread what the original poster found wrong with his dash to cause the CEL not to light!

http://forum.e46fanatics.com/showthr...light=monitors
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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