Strange “warm weather” problem with ED9

Hi Community. Today I turn again to the helpful and experienced screwdrivers and drivers among you… I have had the following problem for a few days: And indeed my ED9 jumped during the continuous cold-weather phase without any problems, only when the past days the weather got warmer around the noon time (car was standing in the sun) “eating” my 3-4 seconds before it grudgingly sprang up then… is just curious because at 11 am the car starts without problems and then at 4 pm only reluctantly wants to start. Is it just a riddle since I know so far only that many cars start worse in cold and/or wet weather… What could this be about? Starter? Air quantity meter? Unable hose? Starter automatic? Hope you can give me a good tip 😉