How do you change heater fan on a 2003 scenic?

To change the heater fan on a 2003 Renault Scenic, first disconnect the vehicle's battery to ensure safety. Remove the glove box and any surrounding panels to access the fan assembly, typically located behind the dashboard. Disconnect the electrical connector and unscrew the fan unit from its housing. Replace it with a new fan, reassemble the panels, and reconnect the battery.