Idling Issue & Key Fob Start stooped working?

hello, I have exactly the same problem in my jeep grand cherokee, I took it to the store the light disappeared and turned on again, you got another option you could know that it was or still you are still with the same problem

So I went to the Jeep dealership and they said that the computer read that cylinder 5 was mis-firing. About a week later the engine light disappeared, and the rough idle stopped. Super interesting how it has all unfolded. My Dad believes I probably had bad gas which caused the mis-fire. I don’t know much about cars, but that seems like a likely scenario? I wish I had more to report back on :( I don’t know what caused all of the symptoms (key fob/auto start, rough idle, engine light). I will ask, the service manager at the dealership said that when the engine light is on the auto start will not work and the cruise control will also not work. For me this was only partially true as my cruise control worked fine. So the auto start is by default of the engine light being on.