Home >> Audi >> 2020 >> SQ8 Premium Plus >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning (3 Of 3) >> 87 Air Conditioning >> Refrigerant Circuit >> Refrigerant Lines, Removing And Installing, From Rear Expansion Valve To Evaporator In Rear Heater And A/C Unit >> Tightening Specifications