It sounds like they forgot to reset the oil change warning light. My 2010 suzuki did that to me in the middle of Desolation Sound last summer. Once I finished panicking and checked the oil level, I remembered about the warning system. Flashing light every .3 sec and a double beep every 5 sec if the engine is not running but ignition switch is on. After making sure the oil level was okay, I reset the warning system and then changed the oil when I got home. Mine beeped and flashed? Does your manual say it should be beeping or is that just my model? If everything looks ok I would top up the oil carefully as you don’t want to over fill and reset the warning system. Good luck.