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General E46 Forum
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Old 12-14-2008, 11:15 AM   #1
lamaker
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HELP: Service Engine Soon Light On

I started my engine this morning and it was pretty cold in my garage...it took a few more nano-seconds for it to start (more than normal) but it started fine and drives fine...it also happened to me yesterday morning but today the Service Engine Soon light came on...so I drove the car around for a while, turned it off and then started it again and it started as normal...

I am thinking the light came on because since the engine was so cold it took a little longer to get things going..

Any suggestions? How I can check why it came on without going to the dealer?

Thanks!
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Old 12-14-2008, 11:25 AM   #2
IxNay
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First check the easy stuff: is the gas cap on tight? If that is the problem, it will still take a few start/stop cycles before the light goes away.

You can usually get your SES code read for free at an Autozone type place.

Jeff
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Old 12-14-2008, 11:27 AM   #3
boxtyp3
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You might be right about too cold. But Im not too sure about it since Im from Norcal.I think the first thing to do is pull out the error code(s) and we'll go from there.
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Old 12-14-2008, 11:45 AM   #4
e46vert
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Originally Posted by boxtyp3 View Post
You might be right about too cold. But Im not too sure about it since Im from Norcal.I think the first thing to do is pull out the error code(s) and we'll go from there.
my car did the same thing. run the error code and its p1345 misfire cylinder 5. I change all 6 spark plug and have the shop turn off the ses light. so far the light is gone so hopefully it wont come back on. Check your spark plug....
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Old 12-14-2008, 01:15 PM   #5
lamaker
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Thanks for the suggestions...I will go to Advance Auto Parts today to see if they can read the code....as for the spark plugs, I recently (within 30 days) changed them so I hope that is not it...will keep you all updated...thanks again...
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Old 01-07-2009, 10:54 AM   #6
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any updates? it was cold this morning and my engine light came on as well, searching around for code pulling tips now...
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Old 01-07-2009, 12:35 PM   #7
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Please read the article linked in my signature titled "Is your check engine light on?"

Lots of good info in there.

Good luck!

Ken
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Old 01-07-2009, 12:39 PM   #8
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Your car is not going to tell you to check engine just cause it's cold outside

The only thing it does is the on board computer on the dash will beep and flash the temp to alert you that it's below 37 degrees F and beware icy conditions.

If your SES light is on, just go rent a code reader and find out what codes it's throwing!
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