SpaceTourer Temperature Readings Issue

Restricted cooling grille error on a 2021 model seems unlikely. Are you sure it's not a faulty sensor? Are you doing mostly short trips or longer runs? Has the car had any front-end work recently?

Mostly longer trips, especially recently. And no front-end work, just regular servicing. A faulty sensor makes sense... where would I find that? Is there a fuse related to the cooling system?

Longer trips make a physical blockage even less likely. The sensor is usually near the thermostat housing or on the radiator. There's often a fuse for the cooling fan – check your owner's manual. I'd recommend getting it scanned by a proper diagnostic tool. It could be simple, or a sign of a more serious cooling system issue. Best to catch it early.

It was just a fuse! The garage checked it, replaced a defective fuse (cost me 52€), and everything's back to normal. Temperature readings are stable, the engine warms up quickly, and the check engine light is gone. Thanks for pointing me in the right direction!