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These cars are smart? Check engine light reset itself?

6168 Views 7 Replies 7 Participants Last post by  maserati of minneapolis, 
C
About a week or so at 3,000 miles the check engine light came on. I tightened up what I thought was a loose gas cap and called the dealer.

He tolded me not worry that it would reset itself and all was well. After another 100 miles or so, it did not go out so I called and scheduled an appointment. Last night when I started the car, the light went out. About 300 miles and 2 more trips to the gas station.

I am going to cancel my service appointment. Has anyone else experienced this?

Additionally, has anyone added oil to their engine between service intervals. If so, where did you buy the oil?

Thanks. CM
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S
The ECU will clear the light if the condition does not repeat after a certain number of key on cycles.
This is part of the OBD2 system.
I'd rather read the code and erase it than wait and wonder.
I know where you can get a code reader and book that works in these cars online for $54....
:D

Regards,
Sean
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S
I tested it on my car.
Doesn't work on Mercedes though.

http://www.roeracing.com/ProductCart/pc/viewPrd.asp?idcategory=23&idproduct=76
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