@Marek K The first year I bought the Jeep I did get a reminder show up on the instrument panel
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OK; so different markets, different years, and different onboard systems. My 2121 U.S.-market Trailhawk has the Uconnect 4C NAV system, and I'll see whether and how that's integrated into the oil-change warning.
However, the Owner's Manual does say that "Based on engine operation conditions, the oil change indicator message will illuminate in the instrument cluster. This means that service is required for your vehicle."
That tells me that I'll get a similar message on my instrument panel's mini-display between the tachometer and the speedometer.
Now, do you know whether your message was based on time and mileage; or on a variable interval based on operating conditions (as the Europeans have done for years, but that is quite new for us Yanks)?
So I'll see whether mine says "oil change," or "service," or both at different times -- maybe I'll get a separate reminder that the time- and mileage-based service is due too.
Quite a busy speedometer you guys have. We used to have those on most/all of our cars for decades, since the mid-1970s when we were supposed to go over to the metric system.

Made it quite handy when stationed with the military in Europe, and shipping our cars over.
But now we've apparently given up on that. So MPH only for us...
...though the mini-display can be set to display km/h.
Man, you guys must be really confused. Speed in MPH, distance in miles, temperature in Celsius...
Body weight in stone...