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this morning i started up my car and there is a yellow check engine light. Last night everything was fine. Not sure if it has anything to do with heavy rain and some chilly wheather? I checked the oil, seems to be fine. any ideas??? 2011 with 2705 miles.
What color / configuration is the light in? Read the manual inside the manual it has descriptions for all the check engine lights, theres a few.
If you want to clear the light you can disconnect the battery for a mini or so, make sure you pump the brake to discharge the electrons stored in the tail lights.
I know with my vw gti the coolant was strange and would shrink in the cold weather and be back to normal in warm weather. Check your coolant maybe its a bit low.
Best bet, take it right back to the dealer. I had that happen on my one-day-old '07 MCS, so I know the heartache you're probably feeling right now. They can diagnose it pretty quickly.