2018 Service Engine Light

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gpart

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Service engine light came on yesterday ( 7/31/17 ) there is an update to ECM .

Cool. I hope this may fix what may be ailing mine.

I have an appt. 1st week in Sept. to have my oil changed and new vehicle break-in inspection. Need to find out what's going on with my AWD. Thus far, I've only used it when we've had some downpours but every time I go through another ignition cycle, it comes back on. I thought to understand that the AWD system automatically reverts to FWD after the ignition is turned off and the vehicle is locked. Seems my 'Nox stays in AWD until I manually turn it off.
 

jsfb6pts

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It was the reason my service engine light was on . Most likely depends when yours was built .Mine was built the 2nd day of production # 613
 

jsfb6pts

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I went to the dealer yesterday to ask about the update . "They told me " it was related to the brake sensors and the auto start/stop. They have no clue why my mileage went down .Unknown side effect ?
 

gpart

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I really don't have any insight into the computer functions but maybe it just needs to re-learn everything?
 

jsfb6pts

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I am wondering if my mileage issue ,was related to a different brand of gas . MY mileage appears to be creeping back up and I did use a different brand at the time ( car wash )
 

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