2010 Hyundai Elantra Owner's Manual - Page 128

Features of your vehicle LCD display warning (if equipped) Door Open Low Fuel! This warning illuminates when a door is not closed securely. The indicator displays which door is opened. This warning indicates the fuel tank is nearly empty. When it comes on, you should add fuel as soon as possible. Driving with the fuel level warning on or with the fuel level below "E" can cause the engine to misfire and damage the catalytic converter (if equipped). 4 55