The light can be turned off with the code reader that gets the trouble codes. Also it can be turned off by disconnecting the battery for a few minutes. It should stay off after the problem is gone anyway, unless the problem recurs. Before you remove th ebattery cable, be sure there isn't a security code you need to apply after reconnecting the battery. The Owner's manual will tell you- sorry that the manual is so thick, but there's a lot to learn about the car.
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