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Old 05-14-2010, 04:02 PM
sunny5280 sunny5280 is offline
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Location: Denver, CO
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Quote:
Originally Posted by we350z View Post
So I was driving a client around last night in the city here and all of the sudden my SES light came on (solid not blinking). I have never seen it come on before so it startled me. Nothing seemed strange about the way the car is running. Plenty of power, check control OK, and engine temp normal. I should have checked the digital temp on the cluster diagnostics tho.

So after driving a short distance to our destination the car sat for a couple of hours. I was hoping the light might reset when I started the car again but no luck.

When I got the car home I poked around in the engine compartment - seemed a little hot but nothing I can see out of the ordinary. No leaks, strange sounds or anything. No wierd burning smells or anything, just the normal smell of warm rubber hoses and such. I will check the coolant level today, but there were no check control messages concerning this.

The manual states:



That's from the 2004 manual, my (2000) manual was similar verbiage but mentioned that damage could occur to the catalytic converter with continued use with SES light on. After searching around on the forum it looks like a fault code could indicate and issue with something other than emissions control system.

I did read the post regarding SES in the How To section.

I think I am going to try and reset the ECU by unplugging the battery for a while to see if that will clear the light, but of course it may come back if there is some persistent problem.

I ordered a ScanGauge II OBD Scanner to check the codes and it will reset them as well if it's something minor. Is there a way to pull codes from the onboard diag?

So - my question to you all is. My pops is coming into town and I need to drive around a little bit. How safe is it to drive the car?
Autozone will read the codes at no cost. They even have a loaner program where you essentially buy the OBD-II scanner and then return it when you're done. If you've got one nearby you might think about cancelling the one you ordered.

With that said BMW told me it was OK to drive the vehicle with the SEL light illuminated unless it is flashing (indicating an engine misfire). Aside from increased emissions output an illuminated SEL shouldn't cause any harm.
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