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turn off check engine light 850

The CE Light is on because the ECU computer has detected a fault(s) in (usually) an emission related component or possibly ABS, tranny or SRS system. You need to have the system "read" with a code reader to find out where the problem is and repair it.. It probably has nothing to do with routine maintance items. The "service" light just reminds you that it's time for an oil change etc. Resetting it requires a ~$150. additional tool. Sorry. The cheap was is to buy some black electrical tape at Home Depot and cover it or pay a mechanic to reset it for you. They got ya.

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