Hyundai Repair: airbag warning light, trouble code, scan tool

Question
How can I reset a 2004 xg350 air bag light the dealer reset it and told me it was tripped by a low voltage condition.
My wife left the door ajar over night and air bag light is on again.  

Answer
Unfortunately, the only way to reset the lamp is to clear the trouble code with a scan tool.  For issues like low battery voltage, the lamp will go out on its own after a predetermined number of key cycles without detecting the problem.  You could try driving it for a couple days to see if the lamp goes out before taking it back to the dealer.  But be advised that the air bag system may not function properly while the lamp is on.