Engine Oil Leaking problems of the 2012 Jeep Grand Cherokee

I have had multiple problems with my 2012 Grand Cherokee. All of the external lights modules ---headlights and tail lights--- went out and had to be replaced due to an electrical problem then the car sometimes wouldn't start. The dealer couldn't replicate the problem so told me they couldn't do anything. Finally one time it happened at the dealer and they figured it was a defect in the keyless entry that was reading the signal from the key fob. Then when they were inspecting the car they found the rear shock was leaking. They ordered a new part in June and it was finally replaced in oct as the part was on back order. On a routine oil change the service tech told me I needed routine maintance check ( 30000 miles) to the tune of $1700 and wanted me to do it right then. . The day after this oil change the check engine light comes on. I called the dealer. They said it was probably because I hadn't done my 30000 mile check ( the day before). He said it could be variable things but probably a bad spark plug that needed to be replaced ( part of the $1700 check he had wanted me to do). I said I had other cars including a 2002 Jeep and I hadn't had to replace the spark plugs at 30000 miles. Then he realized my 3. 6 l car did not need spark plugs changed at 30000 ---- only the 5. 7 did. Yesterday I checked my fluids and saw the power steering fluid was way low. I called the dealer to see if this was normal. The tech said no--- the steering fluid was in a contained system and should not loose fluid. He said I must have a leak somewhere in the system. He said it was very dangerous but not covered under warranty. He said the engine could catch fire or I could loose steering. Why wouldn't this be covered under warranty? it is dangerous. The car only has 36000 miles and this leak should not happen.