I would like a repair/service Manual for now PLEASE

Question edited for clarity.

In the link, for a paper version of to download.

https://www.google.com/search?q=2004+hyundai+xg350l+repair+manual

..

This site has a lot of manuals, but I do not know if it does repair manuals

https://searchmanuals.net/search7/?keyword=%2Bowners+%2Bmanual&gclid=Cj0KCQiAzePjBRCRARIsAGkrSm4hwGgMJ4loxVKnk_d9loNSyMnzjcinCTYKx6DBNotuk4W7EdNURhoaAggqEALw_wcB

You just go to the link I attached I'm sure you will get the solution of your problem -

2007 2009 HYUNDAI SANTA FE REPAIR MANUAL

Hyundai Workshop Manuals

Hyundai SantaFe 2012 4Cyl 2 4L OEM Factory SHOP Service manual Download...


get your car fix right now

Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
Hyundai SantaFe 2003 4CYL 2 4L OEM Factory SHOP Service manual

it is probably going into a fail safe mode, get it to a dealer and have it scanned for dtc's

check your owners manual and your transmission dipstick. most manufacturers put fluid type recomendations on the trans dipstick.

This works...the cruise is directly tied to the brake lights...when I replaced the brake and side light bulbs on my 2004 Santa Fe,,,the cruise started working with no other adjustments. It must complete a circuit or something.