2) Confirm the fuel cap is installed. If it is, loosen the cap, then retighten it at least 3 clicks.
3) When you restart the engine, the message appears again. To clear it, press and hold the Trip/Reset button until the message is replaced by the odometer/outside temperature display.
4) If the system still detects a loose or missing fuel cap, the Malfunction Indicator Lamp (MIL) comes on. Turn the engine off and check or retighten the fuel cap at least 3 clicks.
5) The MIL goes out after 3 days of normal driving once the cap is tightened or replaced. If it does not go out, have your dealer inspect the vehicle.