I recently went on a 600 mile road trip (using a decent amount of 4WD) and the day I got back, I went to turn on my car and pull out of a parking space to go to work, when all of the sudden my Hyundai just died on me. I barely had used the throttle and the car just turned off. I was able to turn it on again after turning the key again. Doing some diagnosing, I turned the car on again and noticed the 4WD system warning light was blinking as well as the rpm (while in idle) was fluctuating under 1000 rpms.

I'm not entirely sure what is going on as the vehicle was working the night before when traveling for 4 hours straight in 100 degree F weather. Before this trip, I have had a TPMS light on, assuming a pressure sensor in one of the tires was faulty. I double checked all of the tires (even the spare) and had no problems with the tire pressure. I never had the 4WD system light turn on while using the 4WD, but only in this instance. The 4WD LOCK was also off.

I can understand there being a problem with the 4WD and if there's a relation to the TPMS light, but I am not sure why the engine died on me and is idling rough.

Any ideas and where to get this checked on? I'd love to do it myself if I can

 

Many times when we get unrelated codes or problems , we need to look for what the problem areas might have in common.
A good part of the time the common item is a shared ground connection.. Someone may need to look into this possibility a little further.