2003 Hyundai XG 350 will not start

Check battery and connection alternator too.

You need to have a load test done on that battery Esther. The only other thing would be if your tracker would have a 12 volt drain.

Check all fuses ,wiring anywhere short or check alternatour

Running so few miles has accelerated the aging of the battery - the battery never had a chance to fully recharge in such small trips -  so now you have to replace it a year sooner than usual.
Just replace it.

Sorry Peter I do not have a solution to your car problem, but I also own a 2004 XG-350 and the SAME EXACT thing is happening to my car right now, crazy huh. Pretty much started out of nowhere...the boyfriend is going to go try the leaving keys in ON position and reconnecting the battery. Did you happen to find out what was wrong with yours, thought maybe if you did it would help save me a step. Praying nothing to serious. Hope you got your car working well again!

Thanks,
Nikki

Check the battery first, if it is ok you probably have a bad starter. If the battery is drained, you need to charge and test the battery and alternator.

Check the starter relay.

varible intake motor malfunction. take it to the dealer, unless you have expertise and tools/test equipment to work on this car.

Pull out the ecm fuse for a minute and then reinstall it.

from your comment,theres 3 things that can cause this,loose batt.post connection,weak batt.or something in elect. circuit that stays on after car is off and drains batt.,like underhood light,dome or truck light,what u can do is when u park car unhook batt. cable,make sure batt. is well charged,hook it up next day if car starts,its something that drains batt.in car! if it doesnt start,batt. needs replacing.i ruled out starter,dealer should have checked it to see if it was pulling too much amps,and that its easy to jump.