2004 Hyundai Santa Fe won't start after fueling

Take Off The Negative Batter Terminal For 45 Minutes To Reset The ECM(ECU). See if your vehicle will start after that. An octane rating, or octane number, is a standard measure of the performance of an engine or aviation fuel. The higher the octane number, the more compression the fuel can withstand before detonating (igniting). In broad terms, fuels with a higher octane rating are used in high performance gasoline engines that require higher compression ratios. In contrast, fuels with lower octane numbers (but higher cetane numbers) are ideal for diesel engines, because diesel engines (also referred to as compression-ignition engines) do not compress the fuel, but rather compress only air and then inject fuel into the air which was heated by compression.

thank you for the quick response, I did as you stated but sadly it did not work