I just bought a 2017 glc 300 and less than a week, it showed an error for "stop the car and keep the engine running". I brought it back to the used market that I had bought it and they replaced a new battery. But right after 2 days, I surprised with some new warnings on the screen. Firstly it said see operator's manual with a battery icon at the top, and after 3 minutes it had an error for coolant and start overheating.
I brought it back to used market service department and they said it was because the belt and it wasn't tied enough, we have tied it and it's ready to go. But after only 1.5 hour driving, I faced to completely same errors. It started with ser operator's manual and end with overheating.
I have no idea wether they don't know how to fix it, or it won't be fixed at all.
Anyone has any idea here?