Why the temperature raise dramatically in a slow traffic ride. on 2003 Audi A6 Quattro

i saw the temperature gauge showing 1 notch before the H mark in a simple slow traffic for three blocks i stop the car and opened the hood, the fan did not work, the fan after i usually park the car begins to runs after a few seconds, in this case the fan simply dosent work

Asked by for the 2003 Audi A6 Quattro
check fuses and relays first, if the are good test the fan motor, also temp sensor..