My EGO mower is two years old. The weather here is running between 95 to 100F. When going to run my mower in the late evenings as it starts to cool down I will get a green light start then it will stall and blink yellow. I can reengage the mower once or twice and it will run just fine. The mower and the battery are in the garage at about 95 to 100F. The battery is fully charged and will mow a full hour if I can get the mower started. Could the motor brushes need cleaning? It seems to be dependent on motor position on whether it will start or not.