s4 coolant change

changed the coolant on my S4 but not sure how to bleed it to get rid of all the air does it have a bleed valve

This is all that is in the workshop manual

Make sure the heater controls are set to full on (hot). Run the engine untilthe thermostat opens switch off. Wait until cold. Then top up.
When changing the coolant it is advisable to use a 50/50 mix of good quality antifreeze and distilled water...not tap water. Also make sure the heater controls are set to hot/open when drainning.