Was heading home and "Check coolant level" warning showed up for the first time in the current car. The engine temperature stayed at a constant level of around 95 C (200 F) and it was -20 C (-4 F) outside so I didn't bother to stop and see what's going on. Ended up adding maybe 0.3 liters of coolant to top up but it's been a while since the last I checked the coolant level so I'm not sure over what period of time it has been decreasing. At least I couldn't find any visible leak spots but I have to keep an eye for this.
Also the door handle carrier of the rear driver side door broke just recently. It had acted weirdly for some time now and now it was freezing and something just snapped when I tried to open the door. New DHC already on the way. Did the fix with metal cable ties as per @andrewwynn for the driver's door last year and will be doing the same for this one too so hopefully this will be the last time for this door.