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Home >> Audi >> 2021 >> S5 Premium Plus, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 252 (Cooling System (4-Cylinder Direct Injection 2.0L 4V TFSI Engine (Ea 888EVO4 BZ)) (DMSA)) >> 19 Cooling System >> Cooling System/Coolant >> Coolant, Draining And Filling >> Bleed Cooling System. >> Notes

Bleed Cooling System.: Notes

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Special tools and workshop equipment required 

Procedure

Fig 1: Coolant Expansion Tank
GWWA19-12304Courtesy of AUDI

-- Tighten the cap -1- on the coolant expansion tank until it locks into place.

-- Start the engine.

Duration Engine Speed Conditions
Three minutes 2000 RPM
  • A/C system "OFF", the LED in the AC  button does not turn on
  • Heater on "HI", blower speed as low as possible (= 0)
Until both large coolant hoses on the radiator are warm Idle
  • A/C system "OFF"
  • Heater "HI"
2 Minutes 2000 RPM
  • A/C system "OFF"
  • Heater "HI"

-- Turn off the engine.